High-data-rate underwater laser communications

Jacob R. Longacre; Dennis E. Freeman; Judith Bannon Snow

doi:10.1117/12.21462

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1 September 1990 High-data-rate underwater laser communications

Jacob R. Longacre, Dennis E. Freeman, Judith Bannon Snow

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Proceedings Volume 1302, Ocean Optics X; (1990) https://doi.org/10.1117/12.21462
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

The high frequency of optical radiation permits high data rate communications in the megahertz (MHz) regime. To the best of our knowledge, no unguided, underwater high data rate communications system has been reported. In this research, we investigate the feasibility of a short range, high data rate underwater laser communications system. The present study considers two independent systems that are separated by several attenuation lengths with regard to signal acquisition, communications channel lock, and information transfer. System self-alignment of the transmitter onto the receiver is demonstrated in a small laboratory water tank. Successful transmission of light modulated at MHz rates is demonstrated in a pool over an extended water path.

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Jacob R. Longacre, Dennis E. Freeman, and Judith Bannon Snow "High-data-rate underwater laser communications", Proc. SPIE 1302, Ocean Optics X, (1 September 1990); https://doi.org/10.1117/12.21462

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