A Gbps Building-to-Building VLC Link Using Standard CMOS Avalanche Photodiodes

A Gbps Building-to-Building VLC Link Using Standard CMOS Avalanche Photodiodes

A building-to-building free-space visible-light-communication link over more than 72 m link distance is presented. The link employs a dual data/clock optical channel from two 680-nm vertical-cavity surface-emitting laser laser-diodes. The receivers are implemented using custom bandwidth-e...

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Bibliographic Details
Main Authors: Bassem Fahs, Matthew Romanowicz, Mona M. Hella
Format: Article
Language:English
Published: IEEE 2017-01-01
Series:IEEE Photonics Journal
Subjects:
FSO
VLC
avalanche photodiodes
laser diodes.
Online Access:https://ieeexplore.ieee.org/document/8085400/
Description
Summary:A building-to-building free-space visible-light-communication link over more than 72 m link distance is presented. The link employs a dual data&#x002F;clock optical channel from two 680-nm vertical-cavity surface-emitting laser laser-diodes. The receivers are implemented using custom bandwidth-enhanced avalanche photodiodes (APD) in Austria-Micro-Systems 0.35 <italic>&#x03BC;</italic>m complementary-metal-semiconductor-oxide technology. The APD receiver uses resistive linearization to allow for improved bias voltage control in the soft-breakdown region as well as increased signal-to-noise ratio by around 6 dB. A simple amplifier-based architecture is employed with no equalization or transimpedance-amplifier use. Measurement results show an on&#x2013;off-keying data rate of 2&#x00A0;Gb&#x002F;s and forward-error-correction-compliant bit error rate below 3.8 &#x00D7; 10<sup>&#x2212;3</sup>.
ISSN:1943-0655

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