Advanced Design of Schottky Photodiodes in Bulk CMOS for High Speed Optical Receivers

This paper provides theoretical insight on how circular Schottky photodiodes in bulk CMOS can be optimized for certain integrated receiver applications. An optimal photodiode size is analytically demonstrated and the effects of a metal plate reflector are simulated using a transfer-matrix method, bo...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2020-02, Vol.56 (1), p.1-8
Main Authors: Diels, Wouter, Steyaert, Michiel, Tavernier, Filip
Format: Article
Language:English
Subjects:
circuit modeling
Circuits
CMOS
CMOS integrated circuits
Computer simulation
Integrated circuit modeling
Luminance distribution
Metal plates
optical fiber communication
Optical receivers
photodetectors
Photodiodes
Resistance
Schottky diodes
Silicon
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Summary:This paper provides theoretical insight on how circular Schottky photodiodes in bulk CMOS can be optimized for certain integrated receiver applications. An optimal photodiode size is analytically demonstrated and the effects of a metal plate reflector are simulated using a transfer-matrix method, both for frontside and backside illumination. Finally, a distributed circuit model is presented, which deviates from the classical lumped model for large photodiodes or sheet resistances. The presented methodologies can also be extended to other types of photodetectors.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2019.2959806