Improving the efficiency of undersea laser communications

H. Hemmati; A. Biswas

doi:10.1117/12.2042254

6 March 2014 Improving the efficiency of undersea laser communications

H. Hemmati, A. Biswas

Author Affiliations +

Proceedings Volume 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI; 89710I (2014) https://doi.org/10.1117/12.2042254
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

A preliminary evaluation of under-water data-rates achievable assuming near Poisson channel capacity achieving codes with pulse-position modulation and photon counting shows that to achieve 10’s to 100’s bits per second at a distance of 1 km requires 1-2m diameter collection areas with conventional blue laser transmitters and photomultiplier tubes. At distance of 200 m the data-rates increase to 6 Mb/s. A simple model is presented to show the rapid decrease in irradiance as a function of range in different types of deep-sea water where additive background noise can be neglected.

Citation Download Citation

H. Hemmati, H. Hemmati, A. Biswas, A. Biswas, "Improving the efficiency of undersea laser communications", Proc. SPIE 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI, 89710I (6 March 2014); doi: 10.1117/12.2042254; https://doi.org/10.1117/12.2042254

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