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A SPAD-Based Photon Detecting System for Optical Communications

Chitnis, D; Collins, S; (2014) A SPAD-Based Photon Detecting System for Optical Communications. Journal of Lightwave Technology , 32 (10) pp. 2028-2034. 10.1109/JLT.2014.2316972. Green open access

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Abstract

A small array of single photon avalanche detectors (SPADs) has been designed and fabricated in a standard 0.18 μm CMOS process to test a new photon detecting system for optical communications. First numerical results are presented which show that using arrays of SPADs reduces the optical power density required at the receiver. Experimental results then show that the new system preserves the photon counting ability of the SPADs. Finally a simple method is presented which can be used to estimate the size of array needed to achieve a particular target bit error rate at a specific optical power density. Together these results indicate that by replacing the avalanche photodiode in a receiver with the new system it will be possible to count the received photons.

Type: Article
Title: A SPAD-Based Photon Detecting System for Optical Communications
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JLT.2014.2316972
Publisher version: http://dx.doi.org/10.1109/JLT.2014.2316972
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: CMOS, mixed analog digital integrated circuits, optical receivers, poisson channels, single photon avalanche diode
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1470587
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