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Equalization of Integrated Optical Photodiodes using an Infinite Impulse Response Decision Feedback Equalizer

This thesis examines the challenges in creating a fully integrated optical receiver. Due to the nature of silicon, 850nm light exhibits a poor impulse response when directed at an on-die photodiode. Using a modified decision feedback equalizer with an infinite impulse response filter in the feedback path allows to eliminate the long tail of post-cursor ISI that is generated by the photodiode. Due to silicide depositions over the photodiodes, making them opaque, the receiver was tested using an electrical cable with similar frequency roll-off as that of a photodiode. A data rate of 3.7 Gbps was achieved and only limited by the amount of input reflections at the transimpedance amplifier. The receiver occupies an area of 0.23 mm^2 and consumes 51.3mW.

Identiferoai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/29649
Date29 August 2011
CreatorsYasotharan, Hemesh
ContributorsChan Carusone, Anthony
Source SetsUniversity of Toronto
Languageen_ca
Detected LanguageEnglish
TypeThesis

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