single fiber optical io on standard 0.35 um cmos

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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: [email protected]

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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: [email protected]. Home Interface Implementation Using a Single Fiber Bi-Directional Fiber Link. - PowerPoint PPT Presentation

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Page 1: Single Fiber Optical IO on standard 0.35 um CMOS

Single Fiber Optical IO on standard 0.35 um CMOS

Nan Marie JokerstMartin A. Brooke

Duke UniversityDepartment of Electrical and Computer Engineering

email: [email protected]

Page 2: Single Fiber Optical IO on standard 0.35 um CMOS

HUB

Asymmetric or symmetricbandwidth link in each direction

Home Interface

Emitter stacked on top ofdetector for bi-directional 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

Si CMOS Receiver and Transmitter Circuits

Thin film emitterThin filmdetector

Optical fiber

Previousresult for co-locatedemitter/detector pair

Home Interface Implementation Using a Single Fiber Bi-Directional Fiber Link

Page 3: Single Fiber Optical IO on standard 0.35 um CMOS

Si CMOS Rxand Tx Circuits

Thin film emitterThin filmdetector

Optical fiber

• 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.

Co-Located Emitter and Photodetectorfor Single Fiber Bi-Directional Link

Page 4: Single Fiber Optical IO on standard 0.35 um CMOS

Transceiver: Laser Driver and TIA

RCE InGaAs LED50 m diameter with 30m aperture

I-MSM GaAs PD 150 m detector diameter

Page 5: Single Fiber Optical IO on standard 0.35 um CMOS

Measurements from Circuit With Integrated Stacked Devices

I-MSM photoreceiver eye diagram at 1Gbps

RCE LED optical transmitter eye-diagram at 40 Mbps (LEDs are slow)