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

2.  Big Bear designed all 40G ICs and packages (except mod driver) Management & Control Fiber Out Fiber In SFI-5 To SONET Framer or FEC Processor Mod. Control SFI-5 16:4 Mux SFI-5 1:16 DeMux and Clock & Data Recovery (CDR) Limiting Amp Transimpedance Amp Photodiode Optical Modulator CW Laser Modulator Driver CMU 4:1 Mux Big Bear 40/43G Optical Transponder

3. 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 I 2 C Footprint 5” x 7” x 0.65”

4. 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

5. VSR-5 BER/Sensitivity Measurement Set-up Trans- ponder Eval. Board Lightwave Multimeter Optical Splitter PC USB I2C 40 ps/nm 622 MHz Recovered Clock from CDR Signal Generator 622MHz 9dBm (Agilent E4421B) Splitter RF Splitter Splitter RF Splitter RXREF TXREF Agilent ParBERT Optical Atten. OPTICAL LOOP BACK

6. 40G Sensitivity Specs MeasuredSpec Back to Back-7.93-5 2km-7.72-4 Path Penalty0.211

7. Error-Free Operation Over 15 Hours  SFI-5 2 31 -1 PRBS input data  ~2 km of fiber  -4dBm at Rx  35 o C Case T  -6% power supplies  16 UI of wander applied to TxData & Deskew inputs

8. SFI-5 1:16 CDR/DeMux @ 40Gb/s  Data lock @ 40Gb/s, PRBS 2 31 -1, with BER < 10 -15 Single Lane of Output Data at 2.488Gb/s 622 MHz Clock

9. 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 C 35 C

10. 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

11. 40G Jitter Generation Measurement Set-up Agilent 622.08 MHz clock source PLL Rohde & Swartz 40 GHz spectrum analyzer. 4:1 / CMU 16:4MD EA Internal Sequence Generation 01010101010…. Wide Band 20 kHz to 320 MHz High Band 16 MHz to 320 MHz Units MeasuredSpecificationMeasuredSpecification 0.61.20.060.1UI 15.3301.552.5ps  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

12. Measured Jitter Tolerance: SFI-5 CDR/Demux & Limiting Amp FM Modulation Mod LO 40 GHz Synthesizer DC-320 MHz Synthesizer Big Bear 40 DataGen Out Clock 40G Data DUT CDR/Demux & LA ParBERT Measure Oscilloscope Big Bear Box  ITU technique requires at-speed linear phase detector - not available 0.1 1 10 100 0.0010.010.11101001000 JITTER FREQUENCY (MHz) PP SINE JITTER (UI) 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

13. OIF SFI-5 PLL Demo on Table 19 Agilent 81250 ParBERT mux/ TX RX/ De-mux Agilent 86100 DCA electrical optical EDFA Agilent 81250 ParBERT Big Bear Networks Kodiak 40G SR Transponder SFI-5 VSR-5

14. 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