Energy flux conservation law and scintillation-free laser communication system demonstration

Mikhail Belen'kii; David Herr

doi:10.1117/12.614141

12 September 2005 Energy flux conservation law and scintillation-free laser communication system demonstration

Mikhail Belen'kii, David Herr

Proceedings Volume 5892, Free-Space Laser Communications V; 589214 (2005) https://doi.org/10.1117/12.614141
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We discussed the energy flux conservation law and noted that for all turbulence realizations atmospheric turbulence causes exclusively internal redistribution of laser irradiance inside the laser beam, whereas total energy flux stays the same. We proposed to use an energy flux preserving system architecture in laser communication systems. This architecture reduces the effect of turbulence-induced scintillation on the bit error-rate (BER) to zero and allows us to achieve free-space performance in the presence of strong turbulence using a low power laser. We performed two field demonstrations of the scintillation-free laser communication (SFLC) system using a static retro-reflector. In these demonstrations a BER<10^-10 was routinely measured at 0.5 km range in daytime sea-level turbulence using a 10 mW laser. We discussed an implementation of the SFLC system and benefits provided by this system. We concluded that for any practical application, the benefit provided by SFLC, namely, its ability to achieve an exceptionally low bit-error-rate (BER) using a low power laser, should be compared with the system cost and complexity.

Citation Download Citation

Mikhail Belen'kii and David Herr "Energy flux conservation law and scintillation-free laser communication system demonstration", Proc. SPIE 5892, Free-Space Laser Communications V, 589214 (12 September 2005); https://doi.org/10.1117/12.614141

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