ECE 135. Opto-Electronics Design Project Spring 2006

Spring 2004 Duke ECE Electronics Design (14) Spring 2004 Duke ECE Electronics Design (7) Spring 2003 Georgia Tech ECE 4006 C Capstone Design Course (30) Fall 2002 Georgia Tech ECE 4006 B Capstone Design Course (30) Spring 2002 Georgia Tech ECE 4006 C Capstone Design Course (30) History of Offerings

IEEE Standards

Final Gantt Chart

Division of Labor Group MemberLeads Andrew TupperTransmitter/Receiver PCB design, Practice Board Testing IanTransmitter/Receiver schematic design, Optical Link Budget Tyler HelbleParts/Vendor Management, Webmaster, Soldering Ungtae LeeReport Editor, Testing optoelectronic transceiver

Board Design TX Schematic

Board Design RX Schematic

Bill of Materials (BOM) * two Tx/Rx can be fabricated on one PCB board, prices based on 10,000 order aside from Maxim chips VendorItem NumberUsedDescriptionUnit Price Digikey ND18CAP 10000PF 50V Ceramic Digikey CCT-ND2RES 100 OHM 1/8W SMD Digikey CCT-ND2RES 115 OHM 1/8W SMD DigikeyRR12Q24DCT-ND1RES 24 OHM 1/10W SMD Digikey3296W-102-ND1POT 1.0K OHM 3/8” SQ1.092 Digikey3296W-253-ND1POT 25K OHM 3/8” SQ1.092 Express PCBPCB Board LasermateTLC-P85A416-31VCSEL18.50 HamamatsuS59731Photodiode6.50 Maxim IC’sMAX32871Laser Driver6.59 Maxim IC’sMAX32641Limiting Amp6.59 Maxim IC’sMAX32661TIA5.37 Jameco SMA Connectors DigikeyCP-002AHPJ-ND1Power Connector0.43 MurataBLM11HA102SG9Murata Inductors TOTAL $88.47

Completed aggressive TxRx by adding SMA connectors Gigabit Ethernet – Loop Back Test Test setup using XYZ stage Note excessive fiber length due to VCSEL output

Looped Tx output into PD on aggressive Rx 0dB attenuation Stylish Goggles! Gigabit Ethernet – Loop Back Test

0db attenuation 2db attenuation Scope set to 1 second persistence

Gigabit Ethernet – Loop Back BER Test 0-3dB Attenuation BER of 0.0x10-10 (1 minute) 4db Attenuation BER of 0.2x10-10 Signal lost at 5dB Attenuation

Group Final Report

Individual Grades (not group) Presentations Presentation OnePresentation One Ian Phillippi Presentation Two Tyler Helble Presentation Three Ungtae Lee Presentation Four Andrew Tupper Presentation Five Ian Phillippi Presentation Six Tyler Helble Presentation Seven Ungtae Lee Presentation Eight Andrew Tupper Final Presentation Presentation Two Presentation Three Presentation Four Presentation Five Presentation Six Presentation Seven Presentation Eight Final Presentation Blackboard Online Exam

Conclusion (cont’d) Though Gbps Ethernet is important, that was not the core concept taught in the class (surprise?). Though Gbps Ethernet is important, that was not the core concept taught in the class (surprise?). Learned how actual engineering works and for some it was a first taste in actual hands on experience in professional practice. Learned how actual engineering works and for some it was a first taste in actual hands on experience in professional practice. Even though this course was not lecture intensive, it is possibly one of the more important classes in ECE… We now understand why. Even though this course was not lecture intensive, it is possibly one of the more important classes in ECE… We now understand why.

Graduation (Party) Coming Soon…