1. Optical Gigabit Ethernet
Group 4
February 24, 2005
Ronen Adato

2. Progress Overview Received VCSELs and ROSAs
Completed initial schematics
Priced all passives
Created webpage

3. VCSELs Emcore TO-46, 2.5 Gb/s VCSEL High performance VCSEL
Costs: Free samples

4. VCSELs Lasermate TSC-P85A426-2 VCSEL SC connectorized VCSEL Costs:
1 = $32.00/unit
>10,000 = $7.95/unit

5. ROSAs Lasemate RSC-P85P416 1.25 Gb/s SC ROSA SC connectorized ROSA
Costs:
2-3 = $36.00/unit
>10,000 = $6.00/unit

6. Transmitter Schematic

7. Transmitter Schematic
Schematic derived from Maxim laser driver and evaluation board data sheets as well as past group’s work
Key points and considerations for PCB layout
Numerous capacitors and filters used to prevent interference and noise
The Lasermate VCSEL is common anode type, and needs to be connected accordingly
The loop connecting OUT+ (pin 12) to the laser supply needs to be tight
Power line is to be run under the Maxim chip

8. Receiver Schematic

9. Receiver Schematic
Schematic derived from Maxim receiver evaluation board data sheets as well as past group’s work
Key points and considerations for PCB layout
Supply filters placed between the transmitter and receiver supply lines and between the ROSA and Limiting Amplifier

10. Passive Component Selection
Decided to buy all passives except for SMA connectors from one vendor to minimize shipping issues

11. GANTT Chart

12. Tasks for Next Week Order all passive components
Complete financial budget and bill of materials
Complete initial PCB board layout designs and submit for review by Tuesday