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

Autor: Bassem Fahs, Matthew Romanowicz, Mona M. Hella
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: IEEE Photonics Journal, Vol 9, Iss 6, Pp 1-9 (2017)
Druh dokumentu: article
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2017.2765499
Popis: 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-enhanced avalanche photodiodes (APD) in Austria-Micro-Systems 0.35 μm 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–off-keying data rate of 2 Gb/s and forward-error-correction-compliant bit error rate below 3.8 × 10−3.
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