3.5 micron free-space laser communications

Allen Geiger; Chueh Ting; Edward J. Burlbaw; Jianwu Ding; Shinn-Der Sheu

doi:10.1117/12.682557

1 September 2006 3.5-micron free-space laser communications

Allen Geiger, Chueh Ting, Edward J. Burlbaw, Jianwu Ding, Shinn-Der Sheu

Proceedings Volume 6304, Free-Space Laser Communications VI; 63041L (2006) https://doi.org/10.1117/12.682557
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Free-space laser communication has been demonstrated with application potential in many areas such as line-of-sight communications, satellite communications and the last mile solution in a fiber optics networking. Both 0.8 and 1.5 micron wavelengths are currently used in state-of-the-art free space laser communication systems; unfortunately the system performance is imposed by atmospheric turbulence. To reduce the atmospheric effect in free-space laser communication systems, several techniques have been used, such as adaptive optics, aperture averaging and multiple transmitters; however, significant improvement has not been achieved. Theoretically, the seeing effect may be released using a longer wavelength. In this paper, we present a 3.5 micron free-space laser communication system model and its system performance evaluation. A 3.5 micron propagation model based on MODTRAN simulation results in different weather patterns is presented first, and a propagation link budget system model is described after that. The propagation channel performance evaluation results are presented by means of bit error rate versus various propagation distances.

Citation Download Citation

Allen Geiger, Chueh Ting, Edward J. Burlbaw, Jianwu Ding, and Shinn-Der Sheu "3.5-micron free-space laser communications", Proc. SPIE 6304, Free-Space Laser Communications VI, 63041L (1 September 2006); https://doi.org/10.1117/12.682557

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