OIF SFI-5 40G Transponder Big Bear Networks OFC 2003.

OIF SFI-5 40G Transponder

Big Bear NetworksOFC 2003

Big Bear designed all 40G ICs and packages (except mod driver)

Management &Control

Fiber Out

Fiber In

SFI-5To

SONETFramer

orFEC

Processor

Mod.Control

SFI-516:4Mux

SFI-5 1:16 DeMuxand

Clock & Data Recovery (CDR)

Limiting Amp

Transimpedance Amp

Photodiode

Optical Modulator

CWLaser

Modulator DriverCMU4:1Mux

Big Bear 40/43G Optical Transponder

40G Transponder Standards OIF SFI-5 and SXI-5

• 16 x 2.5Gb/s CML• 300pin MSA connector/pinout

ITU G.693 compliant (SR) / OIF VSR-5• 4dB link budget (2Km)

OC-768/STM-256 SONET/SDH and OTU-3

40G MSA mechanical and I2C• Footprint 5” x 7” x 0.65”

Big Bear 40G Performance Results

VSR-5 BER / Sensitivity

VSR-5 Long-Term BER Result

SFI-5 Eye Characteristics

G.693 Optical Eye-Mask

G.8251 Jitter Generation

G.8251 Jitter Tolerance

VSR-5 BER/Sensitivity Measurement Set-up

Trans-ponder

Eval. Board

Lightwave

Multimeter

OpticalSplitter

PCUSB

I2C

40 ps/nm

622 MHz Recovered Clock from CDR

Signal Generator622MHz 9dBm

(Agilent E4421B)

SplitterRF Splitter

SplitterRF Splitter

RXREF TXREF

Agilent ParBERT

OpticalAtten. OPTICAL

LOOP BACK

40G Sensitivity

1.00E-12

1.00E-11

1.00E-10

1.00E-09

1.00E-08

1.00E-07

1.00E-06

-12.0 -11.0 -10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0

Optical Input Power (dBm)

BE

R

35C, VNom, 40G, 2km

35C, VNom, 40G, BTB

Expon. (35C, VNom,40G, 2km)Expon. (35C, VNom,40G, BTB)

Specs

Measured Spec

Back to Back -7.93 -5

2km -7.72 -4

Path Penalty 0.21 1

Error-Free Operation Over 15 Hours

SFI-5 231-1 PRBS input data

~2 km of fiber

-4dBm at Rx

35oC Case T

-6% power supplies

16 UI of wander applied to TxData & Deskew inputs

SFI-5 1:16 CDR/DeMux @ 40Gb/s

Data lock @ 40Gb/s, PRBS 231-1, with BER < 10-

15

Single Lane of Output Data at 2.488Gb/s

622 MHz Clock

SFI-5 CDR/Demux Eye Mask Measurements

SFI-5 Rx Eye mask tests over full temperature range

SFI-5 Tx interface performs robustly over all stress conditions

• Tested with skews of 20 UI applied

• Tested with 16 UI of wander applied to the ParBERT ref clock

10 C

70 C35 C

40G G.693 Optical Eye-mask Measurements

Eye measured against G.693 mask

1500 waveforms

(w/ optical plug-in)

35 C 70 C

12%

15%

10%

10 C

40G Jitter Generation Measurement Set-up

Agilent622.08

MHz clock source

PLL

Rohde & Swartz40 GHz

spectrumanalyzer.

4:1 /CMU

16:4 MD EA

Internal Sequence Generation

01010101010….

Wide Band20 kHz to 320 MHz

High Band16 MHz to 320 MHz

Units

Measured Specification Measured Specification

0.6 1.2 0.06 0.1 UI

15.3 30 1.55 2.5 ps

Very accurate measurement of random jitter (RJ) and deterministic jitter (DJ)

All jitter generation measurements well within specifications Sufficient margin for data dependent jitter contribution

EDFA

PD

Amp

Measured Jitter Tolerance: SFI-5 CDR/Demux & Limiting Amp

FMModulation

Mod

LO40 GHzSynthesizer

DC-320 MHzSynthesizer

Big Bear40 DataGen

Out

Clock

40G Data

DUTCDR/Demux

& LA

ParBERTMeasure

Oscilloscope

Big Bear Box

ITU technique requires at-speed linear phase detector - not available

0.1

1

10

100

0.001 0.01 0.1 1 10 100 1000

JITTER FREQUENCY (MHz)

PP

SIN

E J

ITT

ER

(U

I) G.8251 Tolerance Mask

CDR + LA

G.8251 Mask

SFI-5 CDR + LA

G.8251 Mask

SFI-5 CDR + LA

CDR+LA meets G.8251 Tolerance Mask with margin

OIF SFI-5 PLL Demo on Table 19

Agilent 81250

ParBERT

mu

x/ T

X

RX

/D

e-mu

x

Agilent86100DCA

electrical

optical

EDFA

Agilent81250

ParBERT

Big BearNetworks

Kodiak 40G SRTransponder

SFI-5 VSR-5

40G Transponder Summary Transponder meets all SFI-5, SXI-5 and VSR-5

Specifications (over full range of temperature and supply voltage)

Currently in production and shipping

For further details see the

Big Bear Networks’ representative at

the OIF Demonstration, Table 19