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72000 km of backbone DWDM networks www.t8.ru DEVELOPMENT l PRODUCTION l DESIGN l INSTALLATION DWDM SYSTEMS VOLGA 400G PERFORMANCE

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  • 72000 kmof backbone DWDM networks

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    D E V E L O P M E N T l P R O D U C T I O N l D E S I G N l I N S T A L L A T I O N

    DWDMSYSTEMSVOLGA

    400G PERFORMANCE

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    OUR ACHIEVEMENTS

    07/2015. In April 2015, T8 put into operation a 100G channel Moscow–Novosibirsk on Volga DWDM equipment without signal regeneration. The 100G channel was implemented in two routes — via Samara and via Yekaterinburg, with 1+1 redundancy. The length of two legs of the line is 4,250 km and 3,400 km, respectively. The channels were organized within the existing multiplex DWDM system built on equipment from international manufacturers. Equipment has proved to be efficient, thereby providing a substantial signal/noise margin on OSNR.

    100Gbit/sec channel in a 4,250 km fiber optic line “Moscow-Novosibirsk” without regeneration

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    About the Company .................................................................................................... 4

    DWDM EquipmentVolga DWDM Platform ................................................................................................. 6Cross-connect DWDM Platform Volga ........................................................................ 7400G Equipment ......................................................................................................... 8200G Equipment ......................................................................................................... 9100G Equipment ....................................................................................................... 1110G Equipment .......................................................................................................... 142,5G Equipment and Below ...................................................................................... 18EDFA & RAMAN Optical Fiber Amplifiers .................................................................. 20Hybrid Amplifier EDFA + RAMAN ............................................................................... 21Remote Optically Pumped Amplifier ROPA .............................................................. 21ROADM – the Solution for Multichannel Networks ................................................. 22Optical Units Vmux ..................................................................................................... 23Optical Spectrum Analyzer OPM ............................................................................... 23

    DWDM and СWDM Compact Systems3U Compact Metro DWDM System .......................................................................... 241U DWDM and CWDM Solutions ............................................................................. 25

    Network Management SystemNetwork Management System NMS Fractal ............................................................ 26

    Solution and ServicesResearch and Development Center ......................................................................... 27Technical Support & Learning ................................................................................... 27DWDM Network Designs and calculation................................................................. 28

    Fiber Optic Security SystemDunay Distributed Fiber Optic Security System ....................................................... 30

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    T8 is the leading manufacturer of wavelength-division multiplexing telecommunication equipment (DWDM and CWDM) in Russia and CIS countries. We develop and manufacture a line of DWDM and CWDM equipment with channel speed up to 400 Gbit/s. The entire T8 equipment is being designed and manufactured in Russia. Company headquarter is located in Moscow; there is a regional representative office in Saint Petersburg. There are over 200 staff members in the company, including four doctors of science and twenty two PhDs.

    The company is a constant participant of the well-known Russian rating «TechUspech» among high-tech companies. The company got short-listed among the Top 5 of Russia most innovative small companies according to the TECHUP-2017 rating. T8 has been a CNEWS AWARDS winner in “Russian Technologies” nomination. In 2014, the company won a competition of ROSTEC, Russian state corporation in the field of photonics with a project for a new DWDM system. In 2015, the company became the nominee for the «Industry» award. The company is a member of the alliance of manufacturers of modern telecommunications equipment TELMI.

    A substantial part of our profit is re-investing to scientific research and development activities that allow us to manufacture world-class CWDM and DWDM equipment. T8 has the own R&D Center, “T8 Scientific and Technical Center” LLC, which is a resident of the Skolkovo Innovation Center, as well as the best-equipped measurement laboratory in Russia. Every year our specialists publish dozens of scientific articles in Russian and international journals. We obtain patents for new scientific research results year by year.

    Based on researches performed in our R&D Center, we established several world records in 100 Gbit/s signal transmission:

    •100G transmission over 4250 km in real Moscow - Novosibirsk DWDM system without dispersion compensator modules (DCM) or signal regeneration;

    •10x100G transmission over 500 km in a single-span fiber optic line using of remote optically pumped amplifiers (ROPA)

    One of direction developing fiber optic products is the Dunay distributed acoustic sensor. The Dunay team

    T8 – Technologies of InfinityAbout the company

    General Director of T8, Treshchikov Vladimir PhD

    About the Company

    has its separate company, T8 SENSOR LLC. The device is intended for monitoring of security zones of long-distance objects: oil and gas pipelines, communication lines, state borders, perimeters of large areas, such as industrial and specialized objects.

    The development of modern telecom equipment and the implementing of innovative technologies require high professionalism and creative approach of the employees. Not only state-of-the-art technology gurus but also recent graduates work in our company.

    We have established a school for training and education of young specialists; we select and promote the best graduates of leading Russian universities such as MIPT, MSU, Bauman MSTU, and others. The company has established several telecommunication laboratories in MTUCI and in The Bonch-Bruevich Saint - Petersburg State University of Telecommunications. Training courses for specialists are an opportunity to extend one's knowledge in the area of wavelength division multiplexing technology and to work practically with the telecommunication technologies.

    T8 offers integrated solutions for building DWDM systems on a turnkey basis: design, supply, installation and maintenance of the equipment. The qualification of the company specialists makes possible to implement projects of any complexity both for regional and backbone DWDM networks. The in-house design department calculates DWDM networks within a short period of time.

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    The main areas of T8 company activities:

    • Development and manufacture of CWDM and DWDM equipment;

    • Pre-design analysis of fiber optic lines;• Development of design concept, calculation and

    engineering design of networks;• Equipment installation;• Maintenance and technical support of equipment;• Distributed acoustic sensors development;• Laser physics and optoelectronics research and

    development activities. The company has ample technical capabilities permitting to solve any types of tasks that may appear. The vast practical experience in the installation of high-complexity systems in various climatic conditions makes it possible for our specialists to manage the most challenging situations within short time and with high quality. For customers is available 24/7 technical support. The company has full-time mobile groups of engineers that can provide immediate response to any situation. The high quality of projects implementation is confirmed by positive feedback and references. The company is ISO 9001 certified.

    We have put in operation over 72,000 km of DWDM lines. Communications providers, system integrators, state authorities, data processing centers, plants and factories are among our clients. One of the key clients in Russia is Rostelecom, the largest fixed-line operator.

    Our customers:

    About the Company

    Development and production of DWDM systems

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    Volga DWDM PlatformIncrease your network performance using our high-speed device

    DWDM Equipment

    High-speed multiservice and multiprotocol DWDM platform Volga consists of the range of chassis with different capacities and optimized for various optical network deployments: from compact solutions for distance increasing of existing city and regional networks or data center interconnect for organization of high capacity and long-haul transport infrastructure. The total capacity of the system is up to 30 Tbit/s. All chassis of DWDM-platform Volga use common software and hardware, control and monitoring systems, ensuring compatibility, manageability and interchangeability of modules in all product lines.

    •5 chassis types;•Support up to 400G;•Optical amplifiers: EDFA, RAMAN

    and gybrid EDFA+RAMAN;•ROADM: WSS 1x1, 1x2, 1x4, 1x9;•Redundant AC/DC power

    supplies: 650, 850, 1200 or 1600W. The Volga platform has EC declaration of conformity in accordance with the requirements of the European Union. The objects of the declaration correspond to the relevant legislative acts of the legislation on the Union 2014/30 / EU; 2014/35 / EC; 2011/65 / EC.

    High channel capacityTransmission of up to 96 DWDM channels, up to 100 Gbit/s or 400Gbit/s each. Transponders support various line speeds 400, 200, 100, 40, 10, 2.5G and less. A hot upgrade without traffic interruption is possible. Coherent detection and HD-FEC/SD-FEC/

    Soft-FEC in 400G/100/40/10G transponders makes a transmission characteristics of these transponders very solid and enables them to work in old lines together with existing 2,5G channels. Volga supports up to 270 channels in expanded C+L band.

    OTN technology supportTransponders and muxponders-aggregators transfer traffic in the OTN OTU1/2/3/4 format. OTN capacity matrix up to 200 Gbit/s. The possibility of using an alien wavelength allows customers to organize cost-effective solutions using already using equipment. Next generation will support OTN-matrix up to 1Tbit/s.

    Implementation of complex topologies Due to using of WSS ROADM 1x2, 1x4, 1x9 and different types of aggregators and path-protection cards the Volga platform perfectly fits for constructing different topologies DWDM networks: with 1+1 protection, both ring and mesh. High speed optical end electronic switches, powerful digital signal processor in 100G transponders make possible to build redundant links with very fast reconfiguration (

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    DWDM Equipment

    full supportCross-Connect DWDM Platform Volga The first Russian OTN cross-connector Volga performs digital switching of ODU0/1/2/3/4 streams in non-blocking mode with a total capacity of up to 900 Gbit/s. OTN cross-switch is in development. OTN cross-connector provides telecom operator with a powerful tool for remote management of client traffic allocation over transport optical channels. With the OTN cross-connection, each client port is no more linked permanently to a particular transport channel (as in the muxponder): client traffic can be switched manually to any line interface using the management system, or switched automatically depending on the current load of transport channels. Efficient use of the huge bandwidth of the upcoming super-channels is possible only with the use of OTN cross-connectors with digital switching matrix. New cross-connector Volga will help telecom operators to achieve new level of network control and provide unmatched management flexibility.

    Technical characteristics of Volga cross-connector:

    •Up to 9 cards of two types in any combination: 10x10G client card and 100G line card

    •1 or 2 cross-connection cards •Up to 900 Gbit/s in one chassis (10U size) •2 control and intercommunication units•4 slots for power supplies 1600 W •Power consumption 3200 W

    The cross-switch Volga

    Wide range of optical amplifiersLow-noise erbium-doped fiber amplifiers (EDFA), Raman amplifiers (Raman) with a power of up to 30 dBm, remote optically pumped amplifiers (ROPA), hybrid amplifiers EDFA + Raman. Due to high fault-tolerance of 100G DWDM transponder, the transmission on distances of up to 4250 km without dispersion compensators in the line with cascade of amplifiers is possible, as well as the 500 km point-to-point transmission with the use of Remote Optically Pumped Amplifiers (ROPA).

    Fractal network management systemEnables control and management of all nodes at the network map. The system provides information about

    the status of network elements with minimal delay. Management of distributed administrative domains. The graphical framework Fractal and the built-in Web-server significantly simplify operations on remote configuring of the Volga platform.

    Dimensions and power consumptionChassis options allow you to easily and efficiently increase the capacity of your network by adding only the required blocks and replacing the chassis with a larger chassis if necessary. Doubled power units: DC 36–72 V or AC 220 V 50Hz. Chassis options height 1, 3, 6U and 10U. Chassis depth 300 mm for standard telecommunications rack 19/21”.

    ChassisOptions

    V10 V10R V6 V3 V1

    Units in chassis 13 11 7 3 1 constant

    Redundancy of the control unit no 1+1 no

    Reservation of the PS 1+1 1+1 1+1Control unit EMS and NMS «Fractal»Power supply АС 220 V 50 / DC 36-72 VDimensions (W x H x D), mm 482×441×339,7 482×258,2×339,7 482×136,2×339,2 481,6×44,0×377,4

    Operating temperature, ° С from +5 to +40

    Maximum humidity,% 80 (at +25 °С)Power consumption of the chassis (without equipment), W 150 160 113 63 50

    Chassis weight (without equipment), kg 12 12 8,6 7,4 5,3

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    • Transmits up to 4 client signals 100GE (103.125 Gbps) or OTU4 RS FEC (111.81 Gbps) • SD-FEC 15% and 25% error correction algorithm • Reconfigurable in C-band laser • 2xDP-16QAM Line interface/flex rate

    Aggregating transponder (muxponder) combines 4x100 Gbit/s client channels and transmits them in a two DWDM channels. The MS-400E, converts data into the OTN format and uses the new coherent SD-FEC error correction.The laser with a reconfigurable according to ITU-T 100 GHz enables organizing up to 48 DWDM channels 400G within the C-band according to ITU-T 100 GHz.

    Transponder supports both differential phase and absolute phase for all the modulation formats. Supports two individual line-side channels and each channel can be programmed to 100G PM-QPSK, 150G PM-8QAM and 200G PM-16QAM for optimization of reach versus capacity.

    Aggregating Transponder MS-400ETransmit up to 4 x 100 Gbit/s of client signals in 2 x 200 Gbit/s or 1 x 400 Gbit/s

    400G Equipment

    Characteristics

    Line In 1

    Line Out 1

    λ1

    Line In 2

    Line Out 2

    λ2

    Line InterfaceOperating Mode

    2 х 100G 2 х 150G 2 х 200G 1 х 200G 1 х 300G 1 х 400GNumber of interfaces 2 2 1 1 1Interface type LC/UPC LC/UPCModulation format DP-QPSK DP-8QAM DP-16QAM DP-QPSK DP-16QAM DP-32QAM

    Automatic dispersion correction

    up to ± 70 ns/nm up to ± 30 ns/nm

    from -35 to +226,5 ns/nm

    up to ± 35 ns/nm

    up to ± 17,5 ns/nm

    Wavelength range 1528,7-1567,1 nm 1528,7-1567,1 nmOSNRT (0.1 nm, BER=10-12) 10,3 dB 15 dB 10,2 dB 14,5 dB 19,8 dB 24,7 dBFEC Soft-FEC 15%, Soft-FEC 20% Soft-FECOutput power (BER=10-12) -10…+2,5 dBm - 9 ... + 4 dBmReceiver sensitivity -18 dBm -13 dBmReceiver overload 0 dBm +5 dBmClient InterfaceQuantity 2 3 4 2 3 4Interface type QSFP28 QSFP28Interface standard 100GE, OTU4 100GE, OTU4Power consumption 150 W 110 W

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    Aggregating transponder (muxponder) transmits client channels to one OTU4 DWDM channel. MS-200E transmits data in OTN format using Soft-FEC error correction of 20%. Tunable by the wavelength of the laser allows to organize a 200 Gbit/s DWDM channel in the 50 GHz C-band. Supports the transfer of channels in 200G DP-16QAM mode. The unit has a service ESC channel inside the OTN OTU4 service headers on the working wavelength of the muxponder.

    Characteristics

    200G Equipment

    Aggregating Transponder MS-200ETransmits up to 20 x 10 Gbit/s client signals in channel 200 Gbit/s with Soft-FEC

    • Transmits up to 20 client • Soft-FEC 20% error correction algorithm • Coherent DP-16QAM modulation format • Reconfigurable in C-band laser • Automatic dispersion correction up to ± 55000 ps/nm • OSNRT = 18,1 dB (0,1 nm, BER = 10

    -12)

    Line InterfaceOperating ModeMS-200E-DT10

    Number of interfaces 1Interface type LC/UPCInterface standard OTUC2Modulation format DP-16QAMAutomatic dispersion correction up to ± 55 ns/nmWavelength range 1528,7-1567,1 nmOSNRT (0.1 nm, BER=10-12) 18,1 dBFEC Soft-FEC 20%Output power (BER=10-12) +1…+5 dBmReceiver sensitivity -18 dBmReceiver overload 0 dBmClient InterfaceQuantity 20Interface type SFP+Interface standard 10GE, STM-64, OTU2, OTU2e, 8/10/16GFCPower consumption 270 W

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    Aggregating Transponders TD-200ETransmission of up to 4 client signals over two 200 Gbit/s channels with Soft-FEC or HD-FEC

    • Transmission of up to 4 client signals • A cost-effective solution for organizing a 200 Gbps channel • Tunable C-band laser • OSNRT from 11 dB (0.1 nm, BER = 10 -12) • Low power consumption

    The unit supports several aggregation options: 4x100G client in 2x200G DP-16QAM line, 2x100G client in 1x200G DP-16QAM line. Tunable by the wavelength of the laser allows you to organize up to two 200 Gbit/s channels in the C-band in 50 GHz steps. The unit uses the perfect DP-QPSK or DP-16QAM modulation format. A flexible OTN transmission format is used OTUC2v or OTU4v. The client interface of the unit - QSFP28, which allow to reduces the cost of organizing communication channels.

    200G Equipment

    Line InterfaceOperating Mode

    1 x 100G 2 x 100G 1 x 200G 2 x 200GNumber of interfaces 1 2 1 2Interface type LC/UPCInterface standard OTU4v OTUС2vModulation format DP-QPSK, DP-dQPSK DP-16QAMAutomatic dispersion correction up to ± 40 ns/nm up to ± 10 ns/nmWavelength range 1528.7–1567.1 nmOSNRT (0.1 nm, BER=10-12) 11 dB 18 dBFEC SD-FEC 20% / HD-FEC 7%Output power (BER=10-12) -1…+1 dBmReceiver sensitivity -18 dBmReceiver overload 0 dBmClient InterfaceQuantity 1 2 2 4Interface type QSFP28Interface standard 100GE/OTU4Power consumption 90 W 150 W 100 W 180 W

    Line In 1

    Line Out 1

    λ1

    Line In 2

    Line Out 2

    λ2

    Characteristics

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    Muxponders MS-D100EQRedundancy of 1+1 100 Gbit/s channel for 10 client signals

    • High port density due to the use of QSFP28 • Possibility of 1 + 1 redundancy for line and ring networks • Economical solution

    The aggregating transponder MS-D100EQ-T10 transmits up to 10 client signals in two OTU-4 channels. It is possible to reserve the 100 Gbps line interface in accordance with the scheme 1 + 1. The unit has an ESC service channel inside the OTN OTU4 service headers at the working wavelength of the muxponder. Optical SFP + modules (up to 10 ports supporting 10GbE, STM-64, OTU-2, 8/10/16GFC modules) and SFP28 for 32GFC protocol implementation (up to 3 ports in 1 + 1 mode, up to 6 ports in 2 x 100 Gbit mode/from).

    The characteristics of the line interface may differ from the characteristics indicated in the table determined by the installed optical module.

    Characteristics

    100G Equipment

    Line Interface Version 1 + 1 or 2 channelsNumber of interfaces 2Interface type QSFP28 CFP2Interface standard OTU4Modulation format NRZ DP-DQPSKAutomatic dispersion correction no up to ± 40 ns/nm

    Wavelength range LR4 CWDM 1 х 1528.7–1567.1 nmtunableOSNRT (0.1 nm, BER=10-12) - 11.4 dBFEC FEC G.709 SD-FEC 15%Output power (BER=10-12) - 0.6…+ 4 dBm - 15…+ 1 dBmReceiver sensitivity - 8.4 dBm - 22 dBmReceiver overload + 4 dBm + 1 dBmPower consumption 110 W 140 W

    The client interface for any execution SFP+ SFP28Number 10 3 (1 x 100G), 6 (2 x 100G)

    Interface standard 10GE, OTU2, STM-64, 8/10/16GFC 32GFC

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    Оборудование DWDM100G Equipment

    Transponders ТS-100E and TD-100ETransmits 100GE client signals in 100 Gbit/s in DWDM channel with Soft-FEC

    • Transmits 100 Gigabit Ethernet client signals • OTU4 line interface, 120 Gbit/s • Coherent DP-QPSK modulation format • Reconfigurable in C-band laser • Up to 96 channels in accordance with 50 GHz wavelength channel plan • Automatic dispersion correction up to ± 70 ns/nm • OSNRT from 10,3 dB (0.1 nm, BER = 10

    -12)

    TS-100E transponder executes 3R regeneration and transforming of 100 Gbit/s 100 Gigabit Ethernet client signal into an OTN, transmits data into a line using the OTN OTU4 format and uses powerful Soft-FEC error correction algorithms. Data transmission is executed at a stabilized wavelength according to a DWDM grid. The reconfigurable laser enables organizing up to 96 DWDM channels within the C-band according to ITU-T 50 GHz.

    Client In

    Client Out

    100GE

    Tx

    Line In

    Line Out

    DWDM

    Tx

    Rx

    OTN

    FECOTU4CFP 3R

    Coherent

    Rx

    Characteristics

    Line InterfaceOperating Mode

    TS-100E TD-100ENumber of interfaces 1 2Interface type LC/UPCInterface standard OTU4Modulation format DP-QPSKAutomatic dispersion correction up to ± 55 ns/nm up to ± 70 ns/nmWavelength range 1528,7-1567,1 nmOSNRT (0.1 nm, BER=10-12) 12,5 dB 10,3 dBFEC Soft-FEC 13% + HD-FEC 7% Soft-FEC 20%Output power (BER=10-12) +1…+5 dBm -10…+2,5 dBmReceiver sensitivity -18 dBmReceiver overload 0 dBmClient InterfaceQuantity 1 2Interface type CFP QSFP28Interface standard 100GE, OTU4Power consumption 150 W 120 W

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    Оборудование DWDM 100G Equipment

    • Transmits 10 client signals of 10GE, STM-64, OTU2, 8/10 GFC • Coherent DP-QPSK modulation format • Reconfigurable in C-band laser • Automatic dispersion correction up to ± 55 ns/nm • OSNRT from 11 dB (0.1 nm, BER = 10

    -12) • The unit is certified by

    A series of aggregating transponders MS-100E includes three versions. Several world records (MS-100E-T10) were installed on the equipment:

    •transmission of 100G to 4000 km in the EDFA cascade without dispersion compensation and without regeneration;

    •transmission of 10x100G by 500 km from ROPA in a single-span line.

    The transponder transfers data at a stabilized according to ITU-T 50 GHz according to the DWDM grid. MS-100E-T10 is certified by BROCADE, for more information, visit the company's website.

    Characteristics

    Aggregating Transponder MS-100ETransmits 10 x 10 Gbit/s client signals in 100 Gbit/s DWDM channel

    Line InterfaceOperating Mode

    MS-100E-T10-LH MS-100E-T10 MS-100E-T10-SHNumber of interfaces 1Interface type LC/UPCInterface standard OTU4Modulation format DP-QPSKAutomatic dispersion correction up to ± 55 ns/nm up to ± 22 ns/nmWavelength range 1528,7-1567,1 nmOSNRT (0.1 nm, BER=10-12) 11 dB 12,5 dB 13,5 dBFEC Soft-FEC 13% + HD-FEC 7% Soft-FEC 15%Output power (BER=10-12) +1…+5 dBm -15…+1 dBmReceiver sensitivity -18 dBmReceiver overload 0 dBmClient InterfaceQuantity 10Interface type SFP+Interface standard 10GE, STM-64,OTU2, OTU2e, 8/10GFCPower consumption 170 W 165 W 100 W

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    The devices have a high port density, which ensures high efficiency of rack space usage. Each client channel is converted in OTN OTU2 format and sent to the selected line port. All channels on the line side can be combined by an external multiplexer for transmission in a single fiber using CWDM or DWDM technology. The device can be configures in 5-channel mode with a line redundancy 1+1. In this case each client channel is sent to two line ports: main and backup. These two line channels bearing the same client channel can be transmitted on different fibers or with OTN X-connect between the channels. SFP + can be used with a fixed or tunable wavelength.

    Characteristics

    10G Equipment

    • Transmits client signals of 10GE, STM-64, OTU2, 8/10 GFC • Line interface OTN OTU2/ OTU2e • Up to 10 x 10G transponders per board • Super-FEC G.975.1 I.4,I.7 and FEC G.709 error correction algorithm • Line and client interfaces SFP+

    Rx

    TxSFP+

    Rx

    TxSFP+

    Rx

    TxSFP+

    Rx

    TxSFP+DFB

    Line In 1

    Line Out 1

    OTU2

    TT-10EDWDM

    Rx

    TxSFP+DFB

    Line In 2

    Line Out 2

    OTU2

    Rx

    TxSFP+DFB

    Line In 10

    Line Out 10

    OTU2

    Client Out 1

    Client In 1

    10GE, STM-64,GFC/10GFC8

    Client Out 2

    Client In 2

    10GE, STM-64,GFC/10GFC8

    Client Out 10

    Client In 10

    10GE, STM-64,GFC/10GFC8

    OTNSuperFEC

    X-Connect

    . . .

    . . .

    . . .

    . . .

    Десна 2

    λ1

    λ2

    λ10

    Transponders TT-10E and T6-10E10 x 10 Gbit/s transmission in 10 Gbit/s DWDM channel with cross-connect and Super-FEC

    Line InterfaceOperating Mode

    TT-10E T6-10ENumber of interfaces 10 6Interface type SFP+Interface standard OTU2/ OTU2eModulation format NRZAutomatic dispersion correction noWavelength range Determined by the moduleOSNRT (0.1 nm, BER=10-12) 12,2 dBFEC FEC G.709, Super FEC G.975.1 I.4, I.7Output power (BER=10-12) Determined by the moduleReceiver sensitivity Determined by the moduleReceiver overload Determined by the moduleClient InterfaceQuantity 10 6Interface type SFP+Interface standard 10GE, STM-64,OTU2, 8/10GFCPower consumption 80 W 70 W

    TТ-10E

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    10G Equipment

    Transponders TQ-10P and TO-10PCost-effective solution for transferring client streams from 155 Mbit/s to 10 Gbit/s without FEC

    • Transmission of client signals: STM4/16/64, 1/10GE, OTU1, 2/4GFC • Linear and client interfaces SFP/SFP + • Universal multi-service and inexpensive solution • 4 or 8 transponders on one board

    Universal 8-channel transponder without FEC enables you to build flexible and cost-effective CWDM/DWDM systems. 3R-regeneration of the signal is performed for each channel (reamplification, reshaping, retiming). Tunable SFP+ or “color” SFP/SFP+ with a fixed wavelength can be used on each line port. The use of standard SFP+ connectors significantly increases the cost-efficiency of the solution. A wide range of client interfaces with speeds from 155 Mbit/s to 10 Gbit/s enables smooth upgrade of client equipment without a need to change the transponder. The device supports both STM and 1GE/10GE ports that makes it possible to arrange SDH-rings and IP-networks.

    CharacteristicsLine Interface

    Operating ModeTQ-10P-P TО-10P-P

    Number of interfaces 4 8Interface type SFP/SFP+Interface standard Determined by the moduleModulation format NRZAutomatic dispersion correction noWavelength range Determined by the moduleOSNRT (0.1 nm, BER=10-12) 19 dBFEC noOutput power (BER=10-12) Determined by the moduleReceiver sensitivity Determined by the moduleReceiver overload Determined by the moduleClient InterfaceQuantity 4 8Interface type SFP/SFP+Interface standard STM4/16/64, 1/10GE, OTU1, 2/4GFCPower consumption 30 W 45 W

    Rx

    TxSFP+

    Rx

    TxSFP+

    Rx

    TxSFP+

    Rx

    TxSFP+DFB

    Line In 1

    Line Out 1

    TO-10P-P

    DWDM

    Rx

    TxSFP+DFB

    Line In 2

    Line Out 2

    Rx

    TxSFP+DFB

    Line In 8

    Line Out 8

    Client Out 1

    Client In 1

    STM-1/4/16/64, FCGE/10GE, OTU1/2 3R

    . . .

    . . .

    Терек 2

    3R

    3R

    . . .

    Client Out 2

    Client In 2

    STM-1/4/16/64, FCGE/10GE, OTU1/2

    Client Out 8

    Client In 8

    STM-1/4/16/64, FCGE/10GE, OTU1/2

    λ1

    λ2

    λ8

    TO-10P

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    10G Equipment

    Transponders TS-10E and TD-10ETransmits 10 Gbit/s client signals in DWDM channel with Super-FEC

    • Transmits 1/2 client signals of 10GE, STM64, OTU2, 4/8 GFC • OTN OTU2 line interface • Super-FEC G.975. I.7 with a redundancy up to 25% or FEC G.709 • 1+1 protection for linear and ring DWDM systems • Reconfigurable in C-band laser • Up to 88 channels in accordance with 50 GHz wavelength channel plan • OSNRT = 9.0 dB (0.1 nm, BER = 10

    -12)

    Dual TD-10E transponder executes 3R regeneration of a 10 Gbit/s client optical signal and transforms a wavelength into an optical DWDM channel. Reconfigurable in C-band laser can be used for organization of up to 96 DWDM channels in accordance with the 50 GHz wavelength channel plan. The FEC version corrects errors according to FEC G.709 or Super-FEC ITU G.975 I.7 standards.

    Characteristics

    Rx

    Tx Rx

    Tx

    Line In 1

    Line Out 1

    OTU2

    Client In 1

    Client Out 1

    10GE, STM-64, OTU2

    Rx

    Tx Rx

    Tx

    Line In 2

    Line Out 2

    OTU2

    DWDMClient In 2

    Client Out 2

    10GE, STM-64, OTU2

    XFP

    XFP

    OTNFEC

    Line InterfaceOperating Mode

    TS-10E TD-10E

    Number of interfaces 1 2 (redundancy available 1+1)Interface type LC/UPCInterface standard OTU2Modulation format NRZAutomatic dispersion correction noWavelength range 1528,7-1567,1 nmOSNRT (0.1 nm, BER=10-12) 9 dBFEC FEC G.709, Super FEC G.975.1 I.7Output power (BER=10-12) < +4 dBmReceiver sensitivity -18 dBm (or -24 dBm)Receiver overload 0 dBmClient InterfaceQuantity 1 2Interface type XFPInterface standard 10GE, STM64, OTU2, 8/10GFCPower consumption 30 W 45 W

    TD-10E

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    10G Equipment

    Aggregators MS-DС10ETransmits up to 8 client signals in OTU2 channel with FEC and OTN X-connect

    • Transmits client signals of GE, STM1/4/16, OTU1, 2GFC • Aggregates 4xSTM16, 8xSTM 1/4, 4xOTU1, 8xGE

    or multipurpose channels up to 10 Gbit/s • Error correction algorithm G.709 • 2 lines outputs DWDM XFP, SFP+ or reconfigurable in C-band laser (MSA)

    Aggregators combines 8 client channels Gigabit Ethernet, SDH STM16 (or their arbitrary combination) in two line channels OTN OTU2, 10 Gbit/s. The device supports cross-commutation on the ODU0/ ODU1 level. Aggregator performs 3R-regeneration of the signal, and error correction according to G.709. Two types of line interfaces are supported: XFP-modules and tunable lasers.

    Characteristics

    Rx

    TxSFP

    Rx

    TxSFP

    Rx

    TxSFP

    Rx

    TxXFPDFB

    Line In 1

    Line Out 1

    OTU2

    DWDM

    Rx

    TxXFPDFB

    Line In 2

    Line Out 2

    OTU2

    Client Out 1

    Client In 1

    Client Out 2

    Client In 2

    Client Out 8

    Client In 8

    GE, OTU1STM-1/4/16

    GE, OTU1STM-1/4/16

    GE, OTU1STM-1/4/16

    OTNFEC

    X-Connect

    . . .

    . . .

    λ1

    λ2

    DFB

    DFB

    DFB

    Line InterfaceOperating Mode

    MS-DC10E-Q3F/O1 MS-DC10EX-Q3F/O1 MS-DC10EP-Q3F/O1Number of interfaces 1 main + 1 backupInterface type LC/UPC XFP SFP+Interface standard OTU2Modulation format NRZAutomatic dispersion correction noWavelength range 1528,7-1567,1 nm Determined by the moduleOSNRT (0.1 nm, BER=10-12) 9 dBFEC FEC G.709, Super FEC G.975.1 I.3Output power (BER=10-12) < +4 dBm Determined by the moduleReceiver sensitivity -18 dBm (or -24 dBm) Determined by the moduleReceiver overload 0 dBm Determined by the moduleClient InterfaceQuantity 8Interface type SFPInterface standard 8 x (GE, STM1/4) or 4 x (STM16, OTU1, 2GFC)Power consumption 45 W

    MS-DС10E

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    2,5G Equipment and Below

    Transponder TQ-3ES and Aggregator MD-D3ESTransmission of signals with a linear speed of 2.67 Gbit/s in the OTU1 channel with Super-FEC

    • Useful for organizing 1+1 and ring protection • Super-FEC G.975 I.3 or FEC G.709 error correction algorithm • OTN OTU1 line interface • OSNRT = 8.5 dB (0.1 nm, BER = 10

    -12)

    The unit is available in the form of a dual aggregator MD-D3ES or a quadruple transponder TQ-3ES. MD-D3ES consists of two aggregators, each of which combines 2 client GE streams, STM-1/4 streams into a linear OTU1 stream or transmits one client stream STM16/FC200. Aggregators in MD-D3ES work independently: a different combination of client threads is possible. Each aggregator has two line interfaces for redundancy. You can select the error correction algorithm (Super FEC G.975 I.3 / FEC G.709) for MD-D3ES, or FEC G.709 for MD-D3FS. The TQ-3FS contains four transponders, each of which transmits one GE client stream, TM-1/4/16 to the OTU1 stream. Transponders in the TQ-3FS are working and configured independently: a different combination of client streams is possible. TQ-3FS is only available with FEC G.709.

    Characteristics

    MD-D3ES

    Line InterfaceOperating Mode

    TQ-3FS MD-D3ES-S3/D1Number of interfaces 4 2+2Interface type SFPInterface standard OTU1Modulation format NRZAutomatic dispersion correction noWavelength range Determined by the moduleOSNRT (0.1 nm, BER=10-12) 8,5 dBFEC FEC G.709 FEC G.709, Super FEC G.975.1 I.3Output power (BER=10-12) Determined by the moduleReceiver sensitivity Determined by the moduleReceiver overload Determined by the moduleClient InterfaceQuantity 4Interface type SFPInterface standard GE, STM1/4/16 4 x (GE, STM1/4) or 2 x (STM16, 2GFC)Power consumption 30 W

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    2,5G Equipment and Below

    Aggregator MS-1S-21ETransmits up to 21 E1 client interface in STM-1 channel

    • Transfer client signals E1 • STM-1 Line Interface • Internal or external synchronization

    The E1 channel aggregator STM1-21E1 is designed for receiving / transmitting twenty-one streams in E1 format (2048 Kbit / s) from / to the SDH transport network of the STM-1 level. Each port of the device works in full-duplex mode. The client E1 channels are connected to the device via RJ-45 connectors. The signals can be synchronized with two inputs (2048 kHz) and two outputs (2048 kHz), in accordance with G.703 / 13.

    Characteristics

    Line InterfaceOperating Mode

    MS-1S-21ENumber of interfaces 1Interface type SFPInterface standard STM1Modulation format NRZAutomatic dispersion correction noWavelength range Determined by the moduleOSNRT (0.1 nm, BER=10-12) Determined by the moduleFEC noOutput power (BER=10-12) Determined by the moduleReceiver sensitivity Determined by the moduleReceiver overload Determined by the moduleClient InterfaceQuantity 21Interface type RJ45Interface standard E1Power consumption 20 W

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    Optical Amplifiers

    EDFA & Raman Optical Fiber AmplifiersA range of erbium amplifiers (EA) and Raman amplifiers (RA) with a power of up to 2 W to build extended communication lines

    • 1,2 and 3 cascaded amplifiers • Controls transient processes when adding channels • Low noise figure • Flat amplifying grid in C-band • Raman amplifiers with pump power up to 2 W (33 dBm) • Stabilization modes for an output power and amplification factor

    Amplifiers increase the power of optical signals without an optical-to-electrical transduction. Amplifiers with one, two or three amplification stages are available. In multi-stage amplifiers, inter-stage access if provided

    for connection of dispersion compensators. The use of gain flattening filters (GFFs) guarantees a flat gain grid in С-band. Each amplifier has a built-in tunable attenuator that enables smooth gain adjustment.

    K1

    ФП1

    GFF

    1%

    VOA

    ФП2

    1%

    EDF

    K2

    ФП3

    GFF

    1%

    ФП4

    1% 1%

    In Out

    MONOut2 In2

    In Out

    DCU

    . . . . . .

    DWDM DWDM

    EDFA

    EDF

    ДН1 ДН2 ДН3

    EDF

    Parameter RA EA

    Spectral range 1528.7–1567.1 nmOutput power +30 dBm (Raman) +10 ... + 26 dBmNumber of amplifying stages - 1-2Number of leveling GFF filters - 1-2Spectral flatness per 10 dB of amplification - ≤ 0,5 dBPower adjustment range with an attenuator 10 - 20 11-18; 14-24; 25-36

    Characteristics

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    Hybrid Amplifier EDFA + RamanCombination of Raman and erbium-doped fiber amplifier in one case

    Hybrid amplifier is a combination of Raman amplifier and erbium-doped fiber amplifier (EDFA). Raman pumping with the power of up to 600 mW amplifies the emission in the line before its input to EDFA and decrease an effective noise factor of the amplifier. Due to lower noise factor it is possible to achieve larger distances between amplifiers and decrease network operating costs. Inter-stage access for connection of dispersion compensators can be optionally provided.

    Characteristics

    EDFA

    λ2

    MUX

    WDMSignal

    Counterpumping

    Signal

    Гибридный усилитель

    OutIn

    Pump1 Pump2

    λ1

    DWDMDWDM

    Remote Optically Pumped Amplifier ROPAIncrease of spans between two network nodes due to remote amplification of signal

    The use of ROPAs makes it possible to increase the distance between two network nodes. The ROPA is an erbium-doped fiber amplifier that is pumped remotely using wavelength 1480 nm either in working fiber or in an additional fiber. The device consists of two functional units: a passive unit (hermetically sealed box with a fiber-optic circuit) and an active unit (one or

    two pumping lasers). Two types of ROPA configuration are used: with a backward pumping (i.e. the pumping is provided from the receiver side) and with a forward pumping (i.e. the pumping is provided from the transmitter side). Working modes of amplifiers and the gain in distance can vary in different configurations, and depend on the required link capacity.

    The application of the ROPA scheme for a span of 500 km

    Parameter RA EA

    Spectral range 1528,7–1567,1 nmOutput power +28 dBm + 16 ... + 23 dBmNumber of amplifying stages – 1–2Number of leveling GFF filters – 1–2Spectral flatness per 10 dB of amplification – ≤ 0,5 dBPower adjustment range with an attenuator 10 – 20 11–18; 14–24; 20–35

    Optical Amplifiers

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    DWDM Equipment

    ROADM parameter 1/1 CA 2/1 4/1 9/1Span between channels 50GhzNumber of input / output channels 96/96 96 x 2/96 96 x 4/96 96 x 9/96Frequency band 192.10... 196.00 Ghz 191.30... 196.05 GhzChannel loss (“Line in / Line out”) 6.5 dB 6.5 dB 7.5 dBChannel loss (“add”) 6.5 dB 6.5 dB 7.5 dBChannel loss (“drop”) ---Channel loss (“blocked”) 40 dBTuning range of attenuator 15 dB

    Tuning step of attenuator 0.1 dBTime of channel switch 250 msTime of attenuator switch ≤ 50 msPower consumption ≤ 10 W ≤ 35 W

    ROADM – the Solution for Multichannel NetworksFlexible add/drop of lightpath channels for the network upgrade and protection

    Reconfigurable multiplexers ROADM-x/1 (x=2, 4,9) are intended for flexible routing and cross-connect of optical channels on core network nodes. Multiplexers ROADM-1T/40C enables you to extract several optical channels from input DWDM signal, and to add client channels into output DWDM signal. Multiplexers ROADM-x/1 (x=2,4,9) enables you to extract arbitrary channels from 2, 4, or 9 input DWDM signals and combine them into one output DWDM signal. An optical equalizer has one

    DWDM input port and one DWDM output port. An output signal power in each multiplexer can be tuned channel-by-channel in the Network Management System (NMS) using internal attenuators. All ROADM units support the WSS redundancy that allows you to reconfigure the path of optical channel when receiving the control signal. This technology allows you to provide redundancy for high bit-rate channels 100G and 40G at a minimal cost. The reconfiguration of the route takes less than 40 sec.

    Characteristics

    Functional Diagram

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    Optical Units VmuxVariable optical multiplexer and demultiplexer

    • Step size 0.1 dB attenuator • Controls transient processes when adding channels

    Units are designed to combine separate DWDM channels in one multi-channel line DWDM signal (multiplexer) or to extract separate DWDM channels from a multi-channel line DWDM signal (demultiplexer).

    Optical power in each channel can be adjusted using built-in optical attenuator. Attenuation value for each channel can be managed using a network management system (NMS). Units support up to 40 or 48 channels.

    Characteristics

    Optical Spectrum Analyzer OPMMeasurements of the spectra in DWDM systems

    The unit performs spectrum measurement for signal rates 2.5 Gbit/s (direct and external modulation), 10G, 40G and 100G (with limitations). Channel optical power can be measured in the range -40…-10 dBm. Noise floor is -55 dBm. The unit is managed using a web interface that displays the spectrum of multi-channel optical signal and a list of channel powers for different formats of modulation. The unit is designed for use in the “Volga” chassis.

    • C-band 1528 — 1558 nm • Frequency grid 50 GHz • 4-lines optical switch

    Parameter OM-40-AV-PM* OM-40-AV** OADM-8/8-

    AV-PM OADM-4/4-

    AV-PM OADM-2/2-

    AV-PM OADM-1/1-

    AV-PMSpan between channels 100 GhzNumber of input / output channels 40/0 40/0 8/8 4/4 2/2 1/1Power meter yes no yes yes yes yesTuning range of attenuator 0 - 15 dBTuning step of attenuator 0,1 dBPower consumption 45 W 15 W

    DWDM Equipment

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    Compact Systems

    Short distances of up to 90 km

    The average distances are 90 - 150 km

    Large spans 150 - 230 km

    • Economical solution for the organization city communication centers

    • A low delay is optimal for organization of a data center network

    • Acceptance and unification equipment with network growth

    • Transfer of several protocols to one wavelength

    Compact system Volga Metro is solution for regional and metro networks using DWDM or CWDM technologies. The system provides the ability operator to organize the traffic at distances up to 230 km with 16 channels up to 10 Gbit/s each. Equipment Volga fully supports OTN technology. The optical unit provides multiplexing of 16 channels in an optical fiber and their demultiplexing in the return channel, and also (optionally) their amplification and dispersion compensation.

    Without amplifiers (SH-short haul):•A multiplexer in the forward channel;•A demultiplexer in the reverse channel;

    With one amplifier (LH-long haul):•A multiplexer in the forward channel;•Amplifier, dispersion compensator and

    demultiplexer in the return channel;With two amplifiers (ULH-ultra long haul):

    •Multiplexer and amplifier in a forward channel;•Amplifier, dispersion compensator and

    demultiplexer in the return channel. The chassis has two types of a redundant power supply: DC 36-72 V or AC 220 V. The chassis has height of 3U and depth of 300 mm for installation in a standard rack 19/21''. The System is controlled by a built-in element management system EMS. The control unit allows you to organize the service channels at the operating wavelength.

    3U Compact Metro DWDM System 16 channels universal compact solution Volga Metro

    Compact solution Volga Metro with three slots

    System configuration optionsParameter Single-fiber Double-fiberInterface standard GE, 10GE STM-1/4/16/64, OTU-1/2/4Wavelength range 1528,7–1567,1 nmControl system built-in EMSNumber of channels up to 8 up to 16Reservation yes yesDistance up to 130 km up to 230 km

    The calculation for attenuation 0.22 dB/km, dispersion 19 ps/nm/km.

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    Compact SystemsCompact Systems

    Parameter ValueControl system EMS or NMS FractalPower supply DC 36-72 VPower consumption without unit of equipment 50 WDimensions monoblock 481,6 х 44 х 377,4 mmWorking temperature + 5 to + 40 °СHumidity of air no more than 80 % (at + 25 °С)Monoblock weight without unit of equipment 5,3 kg

    Any receiving and transmitting units, optical equipment of the platform Volga (except for the MS-200E) can be manufactured in a compact 1U monoblock chassis. This solution is a completely independent system and includes devices: controls, ventilation and two power supplies. The characteristics of the 1U-system fully conform to the characteristics of the units platform Volga.

    The systems is controlled via Gigabit and Fast Ethernet interfaces. The system is equipped with three 10/100BASE-TX RJ-45 ports providing dedicated bandwidth of 10 Mbit/s or 100 Mbit/s. Ports support automatic detection of MDI/MDIX, can be used for connecting PCs, printers, servers, hubs, routers, switches and other network equipment. The system also has two SFP ports, in which modules supporting 1000BASE-SX/LX/ZX standards can be installed, for example, for organizing optical service channels between network nodes.

    Possible execution of compact systems:

    • Transport DWDM-equipment from 155 Mbit /s to 400 Gbit /s

    • Multiplexers and demultiplexers • Tunable Multiplexers ROADM • Optical Amplifiers • CWDM systems up to 10 Gb /s

    V1-TO-10: 8 transponders, up to 8 client signals in V1 chassis without FEC

    Compact 1U DWDM and CWDM SolutionsDWDM and CWDM systems in a compact design

    V1-TT-10E: transmission of 10 client signals of 10G with FEC and OTN cross-switching

    V1-MS-100E: 10 client signals transmission over 10G in 100G channel with FEC

    DWDM system 400 G up to 4 client signals at 100 G

    CWDM-system Irtysh-10 up to 8 clients at 2.5G per channel with interfaces STM-1/4/16, GE, OTU1

    Characteristics

    The calculation for attenuation 0.22 dB/km, dispersion 19 ps/nm/km.

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    Network Management System NMS Fractal

    The optical network management system NMS Fractal is a multi-user, multi-level control environment, and is intended for operation control and monitoring of digital transport systems PreOTN, OTN, including DWDM, CWDM. Fractal provides network configuration management, monitoring and management of troubleshooting, quality management and security management, as well as logging. Flexible filter settings allow you to quickly and accurately analyze the operation of the system and identify pre-emergency situations in the early stages. Thus, the level of equipment management is combined with the elements of the network management layer. NMS supports the following main functions:

    Configuration management•Setting the parameters of network elements,

    including the input of passive network elements that do not have electronic identification elements (microcontrollers);

    •Synchronization of NMS databases and network element for all supported types and versions of network elements;

    •Collection of identification information about the elements of the network;

    •Graphical representation of sections (bayface layout), installed boards and devices, as well as their technical state, including color indication of the emergency state of connections, both optical levels of OTN (channels, multiplex sections, etc.) and electrical levels of OTN (OTU1- 4, ODU0-4);

    Troubleshooting control and management•Providing information about faults and changes in

    the status of monitored network elements (≤ 1 min);•Maintenance of detailed fault logs;•Support of sensors for monitoring and control of

    external alarm at the facility;•Notification by e-mail, as well as audible warning of

    the operator when a fault occurs;•Control of health monitoring modes and the

    receipt of emergency and other messages from network elements, blocks and I / O ports (including «masking» and changing the category of alarm);

    Quality management•Activation/deactivation of quality parameters

    measurement for network elements and sections; •Maintenance of a detailed system log of quality

    parameters on VC, MS, RS, and OTU (FEC) levels with an option to print all available information or to save it on an external storage.

    Integrated element manager (EMS). Operation of a Volga chassis

    Principal scheme of the network is displayed

    Security management•Identification and authentication of the user, as

    well as the demarcation of access rights based on the role model;

    •Domain organization of network elements;•Logging and passive audit;•Control the integrity and security of stored and

    transmitted information;

    ScalabilityNMS Fractal is implemented according to the client-server architecture in the Windows environment (Microsoft SQL Server is additionally required) and can be delivered in the following variants, differing in the management structure:

    •Management of a single administrative domain: Standard - up to 400 network elements, Extended - more than 400 network elements, monitoring the integrity and security of stored and transmitted information;

    •Management of many distributed administrative domains, with a central management node. The maximum number of domains is up to 100.

    Network Management System

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    Research and Development Center The biggest Russian competence center for fiber optics

    The T8 research laboratory was established in 2013. The laboratory of the T8 Scientific and Technical Center carries out research in the field of laser physics and optical science. The T8 Scientific and Technical Center is a resident of the Skolkovo Innovation Center. Telecommunications field is a priority for the laboratory. The majority of research is done for T8, but the center also carries out research and development as a commercial service. Long-distance data transmission is a priority research and development area.

    The T8 Scientific and Technical Center measurement laboratory is equipped with state-of-the-art tools and is the largest in Russia. More than 300 devices are available for performing experiments and research on optical effects. In the equipment park there are unique modern devices of leading manufacturers: Anritsu, Keysight, HP, Tektronix, Ando, Yokogawa, Digital Lightwave, JDSU, Agilent, Accelink, Wandell & Goldermann, TSH, ROHDE & SCHWARZ and others. Modern equipment allows you to be at the top of scientific research in the field of fiber physics. The key scientific developments

    Solutions and Services

    of the laboratory are covered with patents. T8 Scientific and Technical Center specialists regularly participate in scientific conferences and publish articles in leading Russian and international scientific journals.

    Technical Support & LearningWe provide full technical support of DWDM and CWDM telecommunication equipment. Services are available 24/7 for all customers with a service contract in place. The scope of technical support depends on a program that was chosen by customer. We have large equipment replacement fund and are ready to deliver and replace the necessary equipment promptly for our customers. Technical support includes the following services:

    •Remote fault diagnostics (using phone, e-mail, or remote access provided by customer);

    •On-site fault diagnostics;•Installation and connection of replacement

    equipment, recovery of configurations;•Preventive upgrade software;•Provision of access to an information portal of the

    Service Desk;•Preventive audit of the network;•Repair of the failed blocks;•Recommendations and guidelines for installation

    For our customers we organize different trainings. The main purpose of course is expanding theoretic knowledge of DWDM technology, and acquiring practical experience in managing and configuring of real WDM. The considerable part of course’s time is dedicated to practical questions of construction and operation of DWDM networks.

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    Solutions and Services

    DWDM Network Designs and CalculationEngineering department of the company performs calculation of DWDM networks of any complexity in short terms. Our engineers calculate more than 200 projects every year, and dozens of them reach the practical implementation stage.

    Based on initial data provided by customer (scheme of the network and distances between nodes, type and quantity of fibers on each span, plans of the network development) the engineering department solves the following tasks:

    •Development of a channelizing scheme and a principal scheme of the network

    •Calculation of estimated quality of transmission in designed communication channels, and network reliability analysis;

    •Optimization of networks to decrease capital and operating expenses.

    We have a profound experience in designing telecommunication systems based on new formats of modulation of the optical signal. We developed methods of optimization that make it possible to achieve optimal performance for combined networks where both coherent channels 100/200 Gbit/s and noncoherent channels 10 Gbit/s are transmitted simultaneously. Due to this our customers successfully put in operation 100G channels on an old infrastructure that was intended for 10G channels.

    We use self-engineered specialized software for most effective design of DWDM networks. For calculation of networks of high complexity a working group is usually created with experts of R&D department of the company. R&D department performs theoretical analysis and numerical simulation of DWDM networks of complex topology, simulation of new components (optical amplifiers, transponders and other devices), simulation and analysis of linear and nonlinear effects using the OptSim™ software and other tools.

    100 km NEDFA

    10G transponders TD-10, MS-10FX

    EDFA

    DCU

    10

    MU

    X

    TX

    10

    40 TX

    100 TX

    40G transponders TS-40E, MS-40E-Q1040– Coherent 100G transponders TS-100E, MS-100E-T10100– Dispersion compensatorDCU

    10TX

    40TX

    100TXD

    EMU

    X

    100 kmEDFA 100

    – Coherent 100G transponders TS-100E, MS-100E-T10

    EDFA

    DEM

    UX RX

    100RX

    100

    MU

    X

    TX

    100 TX

    100

    N

    Multispan DWDM lines

    100G transponders in traditional DWDM line with passive dispersion compensators

    In existed DWDM lines there are passive dispersion compensators, which were placed at intermediate amplification nodes. The most economical way of the bandwidth Increasing of such a lines is step-by-step substitution of “old” low speed channels on “new” higher speed channels. In this case for the long time period it is possible coexistence of channels of different speeds and different modulation formats like 10G NRZ, 40G DPSK, 100G DP-QPSK, 200G DP-16QAM. In these configurations there is a necessary to use periodical passive dispersion compensation. T8 engineers investigated functionality of the 100G transponders in DWDM line with periodical dispersion compensation. The OSNR margin in 1600 km DWDM line is equal to 7.5 dB.

    Coherent DWDM systems of a new generationThe use of coherent transponders makes it possible to build DWDM lines without passive dispersion compensators. Mathematical dispersion compensation takes place in the receiver’s DSP (digital signal processor).

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    Solutions and Services

    Basic configurationsThe most cost-efficient solutions used erbium doped fiber amplifiers (EDFA). The simultaneous use of a power amplifier and a preamplifier allows transmission of 16 optical channels for a distance up to 155 km and 80 channel for a distance up to 130 km. Simultaneous

    DWDM Lines With Long Spans

    up to 155 kmTran

    spon

    ders

    Tran

    spon

    dersDWDM line DWDM line

    up to 225 kmTran

    spon

    ders

    Tran

    spon

    ders

    DWDM line

    Tran

    spon

    ders

    Tran

    spon

    ders

    Counter Ramanpumping

    up to 260 km

    Tran

    spon

    dersDWDM line

    Counter Ramanpumping

    Associated Ramanpumping

    Tran

    spon

    ders

    up to 275 km

    EDFA2

    MU

    X

    Amplifier with remotePumping (ROPA1)

    EDF

    Amplifier with remotePumping (ROPA2)

    EDFA1

    EDF

    Span1 Span2 Span3

    WDM WDM WDM WDMDCF

    TXTXTXTXTXTXTXTXTXTX

    RXRXRXRXRXRXRXRXRXRX

    DEM

    UX

    λ 1λ 2λ 3λ 4

    λ 1λ 2λ 3λ 4

    Transponders10x100G

    Transponders10x100G

    Counter Ramanpumping

    Remote pumping

    ROPAExtra-long sections of DWDM line up to 475 km. The ROPA technology (remote optical pumped amplifier) is used for remote pumping of the erbium doped fiber (EDF). Amplifier is pumped in a separate fiber. In the

    Raman amplifyingUsing Raman amplifier units in addition to EDFA transmission and receiving amplifiers allows to organize transmission of 100 Gbit/s channels for a span length up to 260 km in systems with 16 optical channels. Transmit is possible 80x100Gbit/s channels

    with up to 235 km span. Stock 3 dB in the middle of the span. Adding the accompanying Raman pumping allows us to increase these figures, respectively, to 275 km and 250 km.

    use of the transmission amplifier and preamplifier allows to organize 16x100 Gbps channels in lines up to 225 km or 80 channels in lines up to 205 km in length. Stock 3 dB was taken into account in the middle of the span.

    laboratory of T8 demonstrated a dense wavelength division multiplexing system transmitting 10 x 100 Gbit/s per channel over 500 km without the use of regenerators or erbium doped fiber amplifiers.

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    zone, movement along the border, or trespassing the monitored zone border. Detection accuracy increases greatly if several monitoring zones are arranged. If a person or car approaches, or if works are in progress near a protected object, the Dunay system is transmitting an alarm event to the operator’s computer indicating the source location. The system permits to detect any kind of activity that is causing water or soil vibrations. When installing the system with a client, T8 specialists set the system individually by taking into consideration the particular features of every facility.

    Areas of application of the system:

    •Pipelines monitoring and diagnostics:• Routine works monitoring. • Protected zone monitoring.

    •Perimeter guarding.•Transportation infrastructure objects monitoring:

    • Rail tracks.• Flight strips.• Bridges, tunnels, highways.

    •Communication lines guarding.

    Dunay Distributed Fiber Optic Security System Distributed sensor of vibration and acoustic actions based on the coherent reflectometer for security systems

    Fiber Optic Security System

    OPTICALFIBER

    Distributed acoustic sensing (DAS) uses standard single-mode optical fiber (G.652) as highly-effective distributed sensitive element, detecting soil vibrations (acoustic vibrations) at distance of up to dozens of kilometers along the optical cable. Dunay system Hardware detect, localize, classify and alert on activity along the entire length of the cable. It offers cost-effective method of around-the-clock automated environment activity monitoring over long-distance linear objects.

    «Dunay» system is designed in 3U chassis to be installed in standard 19” telco rack. Chassis has three slots for: receiving/transmitting unit (coherent reflectometer), amplifier module, and industrial computer for data processing and transmission to remote server. «Dunay» system can operate independently or may be integrated to any exiting security system. Open API allows developers connect Dunay system to all modern security applications using Ethernet channels.

    The system operation is based on coherent reflectometry principle. Optical impulses are sending to the fiber periodically, part of the light is backscattered by fiber irregularities. Fiber microdeformations caused by vibro-acoustic impact change the parameters of the scattered (reflected) signal. The changes in the backscattered signal interference pattern analyzing to identify the spot and nature of the impact on fiber.

    One of the main Dunay applications is the development of early detection systems for critical infrastructure. Since an acoustic sensor allows detecting signals from sources located at dozens or even hundreds of meters from a source, a system operator gets an alarm signal before a trespassing. One standard optical block of the system monitors a zone of up to 50 km, or up to 75 km with remote signal pumping (ROPA).

    Dunay detects: various events throughout a zone with an accuracy of 10 meters: approach to a guarded

    Parameter ValueType of optical fiber G.652

    Maximum fiber length 50 (75) km

    Accuracy of determination up to 10 m

    Power consumption 300 W

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    Fiber Optic Security System

    Perimetral system for critical infrastructure facilities

    When organizing perimetral systems for monitoring of long-distance zones placed over dozens and hundreds of kilometers, the main security goal is not to ensure the physical security but to detect trespassers on time.

    The most important advantage of the Dunay system is its hidden operation, as monitored zone is not visually accessible. When dielectric cable is used, the system cannot be detected in the ground even with special devices (metal detectors). The concealed location of the sensing elements allows to resolve several problems: impossibility of pre-reconnaissance, vandal resistance, and preservation of the secured area landscape. The hidden operation of Dunay system prevents potential trespasser from performing preparation and workup activities, which increases the chance of detecting a trespasser.

    Dunay system has open API and allows developers connect Dunay system to all modern security applications using Ethernet channels. Dunay system may be easy integrated to any existing security system.

    System allows operators detect, recognize and mask routine safety events, such as vehicles or people passing through permitted areas. Dunay system has proven it’s high efficiency in the airport perimeter guarding.

    Oil and gas industry pipelines monitoring and diagnostics

    Pipelines and communication lines monitoring always implies substantial expenditures for the security system infrastructure. If conventional solution is applied, the security zone would contain a lot of elements requiring regular maintenance and verification.

    We offer our customers a unique solution that would allow monitoring zones of up to 75 km long per one device with the ROPA system. One fiber in the fiber optical cable substitutes thousands of sensors.

    Transportation facilities security

    Railroads are the most important throughways of the country, and they cannot operate without

    Operator window with maps and a list of events at the turn.

    monitoring and control automation, same as any up-to-date transportation system. Railroads infrastructure operation requires real-time monitoring of trains movement and railtrack condition.

    Dunay system allows to record works progressing along railtracks, register trains speed, record cargo dragging in case of emergencies. The sensor allows to do the following in real-time mode: reveal wage wheels defects, find gripping brake boxes and determine worn wage wheels. Besides, the continuous data analysis helps to reveal on time any degradation or damage of the railroad tracks and to detect rockfalls.

    A big advantage of the system is its immunity to electromagnetic disturbance. The sensor operates fault-free under lightning discharges, tolerates the vicinity to electric mains, and ensures sustainable operation under substantial electromagnetic disturbances.

    One of the most common reasons for the failure of fiber optic communication lines is the accidental fiber cable break. It can be caused by works near the cable line or vandalism. Dunay allows preventing such an accident by notifying an operator about unauthorized works close to the communication line.

    There is positive experience in using the Dunay system for restoring fiber optic communication lines.

    More information you can find on our website en.t8-sensor.ru.

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    The information in this document is provided for general acquaintance with the company T8, manufactured equipment and new developments. The information provided may be predictive and may differ from actual results. The published information is not a public offer and an offer to conclude deals. T8 reserves the right to change this information at any time without prior notice.

    Is a registered trademark of Ltd. T8. All rights reserved.

    T8 Company

    44-1, Krasnobogatyrskaya street, Moscow, 107076, RussiaTel.: +7 (499) 271-61-61, +7 (495) 380-01-79 Fax: +7 (495) 380-01-39

    51-J, Magnitogorskaya street, St. Petersburg, 195027, RussiaTel.: +7 (812) 677-36-11Tel.: +7 (812) 677-36-12

    [email protected]