TRIUMPH mtg – Rome 5 Jul 07

PHOTONIC NETWORKS LABORATORYElectronic Systems Engineering Dept

University of Essex, UKColchester CO4 3SQ

D2.3 – Cost/Power Consumption/Footprint Analysis of TRIUMPH sub-systems

5 July 2007

George Zarris

Acknowledgements: The schematics shown are modified or original versions of schematics provided by partners

TRIUMPH mtg – Rome 5 Jul 07

Questions

• Key Question: Do we do the techno-economic analysis based on what we will show on the node we put together OR based on what would be possible in x years from now?

• Should we consider QD-based regenerators?

• Multi-wavelength regenerator placement only in metro-core path? Which technique? (AIT Regen B for 40G; ORC for 160G x 2 wavelengths?)

• New simplified design for the ADORE?

• Wavelength conversion is needed at the WDM->OTDM output.

• Which design option for the OTDM->WDM (incl. Clk Recovery)?

TRIUMPH mtg – Rome 5 Jul 07

TRIUMPH Node - Concept

170G

170G

Metro-Core Ring

Metro-Edge Ring 2

Multi Regen

F2,in

F1,in

F1,out

F2,out

170G

170G

R-OADM

170G OTDM [

4x43G WDM

Space switch

Metro-Edge Ring 1

F3,in

F3,out

OTDM to WDM

WDM to OTDM

R-OADM R-OADM

4x43G WDM

1x43G

ABC

D

Add

Drop

TRIUMPH mtg – Rome 5 Jul 07

160 G Dual-wavelength Regen

+27dBm+ per channel

AVERAGE?

Splice losses?

TRIUMPH mtg – Rome 5 Jul 07

160 G Dual-wavelength Regen - Alternative

Use of WDM coupler – More

efficient design?

TRIUMPH mtg – Rome 5 Jul 07

+30dBm L-band Yb-free EDFA

Alcatel + Brightpower

TRIUMPH mtg – Rome 5 Jul 07

Single Tributary (40Gb/s) ADORE

6.25ps offset, i.e. ~1.2mm in silica

BF12.5ps

OC

EAMInput 40Gb/s signal

OC: optical circulatorBF: birefringent fiberFR: Faraday rotatorPBS: polarization beam splitterAtt: Variable Attenuator

PIN

Electronic Control

GaAs 40GHz 2 x 1 switch

From shared MLL Clk source

FR

8dB best case loss

+10dBm ave.

-13dBm ave.PBS

RF Amp

3.5 dB loss

RF Amp

3.5Vp-p

4Vp-p

Active component

Passive component

Att

Output Retimed 40Gb/s signal

• TEC: EAM, GaAs switch

• Heat Sink: Peltier, RF amps

N.B.: Current design difficult to integrate

TRIUMPH mtg – Rome 5 Jul 07

WDM-to-OTDM

160Gb/s OTDM output

4x40Gb/s WDM signal inputs from MEMS switch

Node Primary Free-Running Clock

ADORE

ADORE

ADORE

ADORE

40GHz QD-MLL

0dBm i/p ave. per channel

+16dBm ave.

+10dBm ave.

EDFA

λ –Converter/ 2R,3R Regen

-13dBm ave. at 160Gb/s

TRIUMPH mtg – Rome 5 Jul 07

Two-section mode-locked quantum-dot laser

Passive/Hybrid Monolithic Mode-Locked Lasers

•   Wavelength: 1.064 - 1.3 µm

•   Peak power: up to 1 W (i.e. 16dBm average)

• Electrical power: 1W typ.

•   Repetition frequency: 5-40 GHz

•   Pulse width: down to 1ps

•   Extremely low jitter and amplitude noise

www.nanosemiconductor.com

Now renamed: Innolume

TRIUMPH mtg – Rome 5 Jul 07

OTDM-to-WDM

Alternative technique: 4 synchronized WDM channelsPulse carving at 40 GHz using EAMs.

WDM data Signal

Broadband Signal

DFB1DFB2DFB3DFB4

EAM1

EAM2

EAM3

EAM4

1

2

3

4

OTDM data Signal

TRIUMPH mtg – Rome 5 Jul 07

OTDM-to-WDM

Control Signal (OTDM 160Gb/s)

TFWHM=1.5ps (Gaussian)

=1531.5nm

4x40GHz WDM Channels TFWHM=4.5ps (Gaussian)=1543nm

Spacing=4.8nm (600GHz) Pave=0dBm

HNLF: lenght=0.5km loss=1.44 dB/km Slope=0.01ps/nm2/km

EDFA 1

EDFA 2 EDFA 3

4x40Gb/s WDM Channels

WDM filter

EAM

EAM

EAM

EAM

+25dBm AVERAGE?