Optical Gigabit Ethernet Group 4 February 24, 2005 Ronen Adato

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

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

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

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

Transmitter Schematic

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

Receiver Schematic

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

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

GANTT Chart

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