CPqD’s optical network - Miquel Garrich

CPqD’s optical network activities and collaboration

opportunitiesMiquel Garrich – [email protected]

Futurenets workshop – 24th February – Campinas, Brasil

Optical networks and amplifiers team

Júlio C. R. F. Oliveira: Head of Optical Technology DivisionNeil Guerrero: Lead of High Speed Optical Networks groupJuliano R. F. Oliveira: Technical coordinatorUiara MouraAnderson BravalheriAndré Rolim

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André RolimCamila de AraujoEduardo MagalhãesHeitor CarvalhoBruno AngeliIsrael JacobJoão JanuárioMiquel GarrichFrancisco Helder

Outline

• Optical amplification

• WSS-based ROADM

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• Optical SDN controller

• Add/drop on demand for ROADMs

• (raw) Collaboration opportunities

EDFA: Motivation

• EDFAs are key components in optical links/networks • EDFAs perform nice regeneration of signal power

• However:

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• Source of system noise • Gain depends on wavelength

• Thus, when choosing the (set/operating point) gain:• Choice on the Noise Figure (NF) • Choice on the Gain Flatness (GF)

EDFA: Characterization

• Preamplifier

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• Booster

EDFA: Fitness function

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EDFA: Results

Juliano, Eduardo, Uiara, Giovanni, Alberto, Luis Hecker, Edson, Júlio, J. Maranhão (Padtec), collaboration with DTUin OFC 2013

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EDFA: Results

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Uiara C Moura , Juliano R F Oliveira, Júlio C R F Oliveira, Amílcar C Cesar in SBMO/IEEE International Microwave Optoelectronics Conference (IMOC), 2013

Outline


• WSS-based ROADM

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WSS: Motivation

• Constrained choices on the EDFA gain (NF,GF)• WSS equalization for spectrum flatness

ROADM

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EDFAWSS

WSS: Characterization (local equalization)

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WSS: Results (global equalization)

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Eduardo Magalhães , Juliano, Heitor Carvalho, Matheus Magalhães, Miquel Garrich, Marcos Siqueira, Aldário Bordonalli (Unicamp), Júlio, “Global ROADM-Based Spectrum Equalizer in SDN Architecture for QoT Optimization at DWDM Networks” W2A.35 in OFC 2014

Outline


• WSS-based ROADM

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O-SDN in CPqD• Specialized HW

• Network operatingsystem communication

• Network functions and services

• Communicationinterfaces

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interfaces• Graph network

abstraction• Legacy control plane

virtualized (GMPLS) • Global network monitoring• Adaptive, cognitive and

autonomous performance optimization

O-SDN: YANG modeling for O-NE-OS

• NETCONF-modeling language YANG models ROADM building blocks and its interconnections.

• Eases Optical-Network Elements-Operating System (O-NE-OS)

• The YANG model can be transformed ROADM with

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in a Multi-graph = (nodes, edges)

• Allows creating a ROADM abstraction

• Supports Intra-node, constraint-based path computation using graph traversal

3 WSS

KEY:Black nodes: Chassis system (model) NE Black Edges: NE interfacesRed nodes: Input interfaces Red edges: Connectivity NE (ACTIVE)Blue nodes: Output interfaces Blue edges: Connectivity NE (PASSIVE)Orange edges: Fibers connecting OUT -> IN interfaces

O-SDN: Automatic VON instantiation

• Optical network virtualization:• HS-VON (High Speed Virtual Optical Network):

Optical network for 100Gbps channels and beyond• Aims to avoid excessive signal degradation

• Main-VON: Legacy optical networkfor signals with rate lower than 100 Gbps

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LSP Creation

Marcos Siqueira, Juliano, Giovanni Curiel, Alberto Hirata, Fabian van ’t Hooft, Marcelo Nascimento, Christian Rothenberg and Julio “An Optical SDN Controller for Transport Network Virtualization and Autonomic Operation”, in GLOBECOM 2013

Outline


• WSS-based ROADM

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ADoD: Motivation

• CPqD is currently developing a ROADM-NG platform with express banks:

• Broadcast and select

• Route and select

• Add/drop banks that support:

Broadcast and Select

DegreeInputs

DegreeOutputs

1

N

1

N

Towards / fromadd/drop bank

Developed

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Coupler / splitter

WSS

KEY:

• Colorless: Add/drop ports are not associated to a specific wavelength.

• Directionless: Add/drop ports are not associated to a specific ROADM input or output port.

• Contentionless: Wavelength repetition inside the same add/drop bank is allowed (up to ROADM degree size).

• Flexible grid: Reconfigurable spectrum slots of 12,5 GHz

add/drop bank

Route and Select

DegreeInputs

DegreeOutputs

1

N

1

N


Underdevelopment

ADoD: Motivation (2)Broadcast and Select

DegreeInputs

DegreeOutputs

1

N

1

N

Towards / from

Route and

Select

DegreeInputs

DegreeOutputs

1

N

1

N

Towards / from

Underdevelopment

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WSS-ADB MCS-ADBVS-MCS-ADB

Possiblewavelengthcontention

Coupler / splitter (Variable-splitter) multicast switchKEY: (VS-)MCSWSSEDFA

• Add/Drop Banks (ADBs) proposed in the literature:

…k

…

mRxRx Rx

…

mRxRx Rx

…k

…

m

TxTx Tx

…

m

TxTx Tx

1 N 1 N… …

…k

…

mRxRx Rx

1

MCS

…

mRxRx Rx

MCS

N

…k

…

mTxTx Tx

1

MCS

…

mTxTx Tx

MCS

N… …

…k

…

mRxRx Rx

1

VS-MCS

…

mRxRx Rx

VS-MCS

N

…k

…

mTxTx Tx

1

VS-MCS

…

mTxTx Tx

VS-MCS

N

N-1… N-1…

… …



ADoD: Idea

• Add/drop bank on demand (ADoD) consists of an optical backplane that interconnects fibers from/to each degree, different modules, transmitters and receivers.

Fromdegree

1 N 1 N

Towardsdegree… …

Fromdegree

1 32

Fromdegree

1 32 1 32

Fromdegree

i. ii. iii.

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RxRxRx

Optical Backplane

…

k×m

Rx TxTxTx

…

k×m

Tx

…k

…

ADoD modules

…k …k …k

RxRxRxRxRxRxRxRxRxRxRxRx

Backplanecross-connections

TFA

RxRxRxRxRxRxRxRxRxRxRxRx RxRxRxRxRxRxRxRxRxRxRxRx

i. Example of a synthesized ADoD (only drop direction)

ii. # signals from degrees 1 and 2 increase. Two modules of EDFA + splitter and a module of tunable filter array are shared.

iii. # signals from 1 and 2 decrease (handled by direct backplane cross-connections). EDFA + WSS module for incoming signals from 3.

ADoD: Flexibility analysis

WSS-ADB MCS-ADB VS-MCS-ADB

• Flexibility and losses of Add/Drop Banks (ADBs) porposed in the literature:

…k

…

mRxRx Rx

…

mRxRx Rx

…k

…

m

TxTx Tx

…

m

TxTx Tx

1 N 1 N… …

…k

…

mRxRx Rx

1

MCS

…

mRxRx Rx

MCS

N

…k

…

mTxTx Tx

1

MCS

…

mTxTx Tx

MCS

N… …

…k

…m

1

VS-MCS

…m

VS-MCS

N

…k

…m

1

VS-MCS

…m

VS-MCS

N

N-1…

N-1…

… …

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2 3 4 5 6 7 8 9 100

100

200

300

400

500

600

700

Node degree (N)

Fle

xib

ility

ind

ex

ADoDVS-MCS-ADBMCS-ADBWSS-ADB

• Flexibility and losses of Add/Drop on Demand:

RxRxRx

1

Optical Backplane

…

k×m

Rx

N 1 N

TxTxTx

…

k×m

Tx

…k

…

ADoD modules

…k …k …k

… …

mRxRx Rx

mRxRx Rx

mTxTx Tx

mTxTx Tx

W1C.2 in OFC 2014 Miquel Garrich , Juliano, Marcos Siqueira, Norberto Amaya, Georgios Zervas, DimitraSimeonidou, Júlio, “Flexibility of Programmable Add/Drop Architecture for ROADMs”

Outline


• WSS-based ROADM

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(raw) Collaboration opportunities

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• Is there room for Impairment Aware – NFV / VON? • Network performance can be improved!

Thank you!

Let’s collaborate!

Thank you!Obrigado!

www.cpqd.com.br

[email protected]