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Single Fiber Optical IO on standard 0.35 um CMOS

Single Fiber Optical IO on standard 0.35 um CMOS. Nan Marie Jokerst Martin A. Brooke Duke University Department of Electrical and Computer Engineering email: mbrooke@ee.duke.edu. Home Interface Implementation Using a Single Fiber Bi-Directional Fiber Link.

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Single Fiber Optical IO on standard 0.35 um CMOS

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  1. Single Fiber Optical IO on standard 0.35 um CMOS Nan Marie Jokerst Martin A. Brooke Duke University Department of Electrical and Computer Engineering email: mbrooke@ee.duke.edu

  2. Home Interface Implementation Using a Single Fiber Bi-Directional Fiber Link • Co-located, stacked thin film emitters and detectors for bi-directional interface • Single fiber between the hub and home • Alignment tolerant for low cost packaging Asymmetric or symmetric bandwidth link in each direction HUB Home Interface Emitter stacked on top of detector for bi-directional link Previous result for co-located emitter/detector pair

  3. Co-Located Emitter and Photodetectorfor Single Fiber Bi-Directional Link Optical fiber Thin film emitter Thin film detector Si CMOS Rx and Tx Circuits • The co-location of the emitter and detector enables single fiber bi-directional communication • For asymmetric, low cost interconnection, detector will run at 1 Gbps, and LED emitter at ~100 Mbps. For faster emitter, edge emitter and mirror will be used.

  4. Transceiver: Laser Driver and TIA RCE InGaAs LED 50 mm diameter with 30mm aperture I-MSM GaAs PD 150 mm detector diameter

  5. Measurements from Circuit With Integrated Stacked Devices RCE LED optical transmitter eye-diagram at 40 Mbps (LEDs are slow) I-MSM photoreceiver eye diagram at 1Gbps

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