Performance evaluation of visible-light transceiver for peripheral interface

We examine the practicability of the visible-light communication (VLC) transceiver for bidirectional high-speed and short-range communications. A visible-light peripheral interface could be a novel approach, visualizing the veiled security feature of light by employing visible lights as communication media beyond its intended applications, such as illumination and display. The proposed VLC transceivers are implemented with edge-an emitting laser diode and a silicon photodiode, which is primarily designed to operate in a full duplex mode at 120 Mbit/s. The shielding method that is employed to reduce the light cross-coupling effect inside the VLC transceiver is proposed and experimentally investigated. The bit error rate performance of the proposed VLC transceiver is examined with respect to the transmission distance and the coverage. C (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3535588]