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Underwater visible light communication (UVLC) is of great interest to the military, industry, and the scientific community. In this paper, a long-distance UVLC system is designed, where the half power angle of light-emitting diode (LED) is narrowed to enhance the optical intensity at the transmitter, and a single photon avalanche diode (SPAD) is employed at the receiver to improve the detection sensitivity...
We study the use of Silicon photo-multipliers (SiPMs) for underwater wireless optical communications (UWOC) and discuss their main interests and drawbacks, compared with photo-multiplier tubes. This comparison is mainly based on practical considerations regarding system implementation and the attainable link span. Presenting an appropriate model for signal attenuation in water and considering the...
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