www.optovia.com

Advances in optical amplifier technologies

TF-NGN, Lisboa, 30 Sep 2004

Roland Lenersleners@optovia.com

Slide 2 Proprietary

Outline

PastPresentFuture

… of optical amplifiers for long distance networks

Slide 3 Proprietary

A build example

Düsseldorf

Paris

Slide 4 Proprietary

A build example

Brussels

Rotterdam

Amsterdam

Düsseldorf

Lille

Paris

Slide 5 Proprietary

A build example

AMSROT100km

PAR LIL DÜSBRU300km 150km 200km 250km

The 1980’s

PDH/SDH regeneratorPDH/SDH terminal

Slide 6 Proprietary

A build example

AMSROT100km

PAR LIL DÜSBRU300km 150km 200km 250km

The 1980’s

PDH/SDH regeneratorPDH/SDH terminal

The 1990’s

EDFASDH/WDM terminal

Slide 7 Proprietary

A build example

AMSROT100km

PAR LIL DÜSBRU300km 150km 200km 250km

The 1980’s

PDH/SDH regeneratorPDH/SDH terminal

The 1990’s

EDFASDH/WDM terminal

SDH/WDM/XC terminalEarly 2000’s

EDFA/RamanOADM

Slide 8 Proprietary

Optical amplifier trends over the last decade

PerformanceReach: Several 100 km’s to several 1000 km’s Capacity: 4x2.5G λ’s to 160x10G λ’s (R)OADM support

CostEDFA: > €5000/λ to < €1000/λ (1996-present)Raman: > €5000/λ to < €1000/λ (1999-present)

InterworkingColoured LR optics on SDH ADM’s and XC’s

Slide 9 Proprietary

Next steps in performanceLilleParis

All Optical Networks Hut Skipped Networks

PAR

LILBRU

ROTAMS

DÜS

HAM

BER

NÜR

PRAFRA

STR

ZÜR

MILLYO

PAR

LILBRU

ROTAMS

DÜS

HAM

BER

NÜR

PRAFRA

STR

ZÜR

MILLYO

OADMs only

Brussels

Rotterdam

Amsterdam

Düsseldorf

Lille

Paris

Brussels

Rotterdam

Amsterdam

Düsseldorf

Lille

Paris

No inline amplifiers

Slide 10 Proprietary

Next steps in performanceLilleParis

All Optical NetworksAmplifier requirements

Very low noise (~0dB)Moderate gain (~15dB)Moderate dynamic range (~5dB)Raman only

Network requirementsVery high capacity (>100 Gb/s per route)Long circuits (>2000km)

Hut Skipped NetworksAmplifier requirements

Low noise (<3dB)High gain (>30dB)Large dynamic range (>10dB)Hybrid EDFA/Raman

Network requirementsModerate capacity (<100 Gb/s per route)Shorter circuits (<1000km)

Slide 11 Proprietary

Hut Skipping « Rule of thumb »

Hybrid vs. Raman only

0%10%

20%30%

40%50%

60%70%

80%90%

100%

200 400 600 800 1000 1200 1400 1600 1800 2000 2200

Route length (km)

Typical inline amplifier site reduction (%)

Hybrid vs. EDFA only (Traditional)

Slide 12 Proprietary

Economics of Hut Skipping (~650km link)

0 €

100.000 €

200.000 €

300.000 €

400.000 €

500.000 €

600.000 €

700.000 €

Opex (4 yrs) 244.800 € 168.960 €

Capex 432.000 € 360.000 €

Traditional HSA

Slide 13 Proprietary

Traditional WDM system engineering

Single vendor domain

Mux

Dem

ux

Amplifiers

Client (e.g. Router)

Element Management System

Mux

Dem

ux

TxRxTxRx

EMS interface

Client (e.g. Router)

Slide 14 Proprietary

Open WDM system engineering

Umbrella Element Management System

EMS interface

Multiple vendor domains

Mux

Dem

ux

Amplifiers

Client (e.g. Router)

Mux

Dem

ux

TxRx

Client (e.g. Router)

TxRx

Example: Strategy pursued by 40G transponder vendors for upgrading existing links

Slide 15 Proprietary

Open WDM system engineering

Umbrella Element Management System

EMS interface

Multiple vendor domains

Mux

Dem

ux

Amplifiers

Client (e.g. Router)

Mux

Dem

ux

TxRxTxRx

Client (e.g. Router)

Example: Strategy pursued by Optovia

Slide 16 Proprietary

Open WDM system engineering

Multiple vendor domains

Mux

Dem

ux

Amplifiers

Client (e.g. Router)

Client (e.g. Router)

Mux

Dem

ux

Umbrella Element Management System

EMS interface

Early examples in the SDH worldNext logical step in the IP/WDM world!?

Slide 17 Proprietary

How can an amplifier support Open WDM systems?

Flexible link engineeringCompatibility with broad range of TxRx settingsTransparency to modulation formats (NRZ, RZ, xPSK, …)Compatibility with any kind of DCMEasy to use link engineering tool

Optical Supervisory Channel interworkingCompatibility with OSC of client system

EMS integrationIntegrability into 3rd party NMS Integrability into EMS of client system (WDM, XC, …)Autonomous EMS

Slide 18 Proprietary

The road ahead

The basic amplifier technology is available.Innovation will come from…

Integration of components (the « secret sauce » )Standardization of ancillary functionsOpen WDM systems

… and advances in enabling technologiesNew fibre typesNew modulation formats« Super-Turbo » FEC chipsets

Slide 19 Proprietary

Questions?