Experimental verification of fiber-coupling efficiency for satellite-to-ground atmospheric laser downlinks | Zendy

Hideki Takenaka | Zendy; Morio Toyoshima | Zendy; Yoshihisa Takayama | Zendy

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Experimental verification of fiber-coupling efficiency for satellite-to-ground atmospheric laser downlinks

Author(s) -

Hideki Takenaka,

Morio Toyoshima,

Yoshihisa Takayama

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.015301

Subject(s) - free space optical communication , optics , optical fiber , laser , coupling loss , optical communication , materials science , fiber laser , polarization maintaining optical fiber , satellite , single mode optical fiber , coupling (piping) , physics , fiber optic sensor , astronomy , metallurgy

Optical communication is a high-capacity method that can handle considerable satellite data. When common-fiber optical devices such as optical fiber amplifiers based on single mode fibers are used in free-space laser communication systems, the laser beam has to be coupled to a single-mode fiber. Under atmospheric turbulence it would be difficult to make the required fiber coupling efficiency in satellite-to-ground laser propagation paths. A fast-steering mirror that can operate at high frequencies under atmospheric turbulence is fabricated, and its tracking performance is verified in real satellite-to-ground laser communication experiments. The measured fiber coupling loss of 10-19 dB in satellite-to-ground laser communication links under atmospheric turbulence shows good agreement with the predicted fiber coupling efficiency of 17 dB.

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