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Proceedings Paper

Optical design of an optical system for free space optical communication
Author(s): Chang-yu Shen; Fei Chen; Xiang-dong Yu
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Paper Abstract

An optical system for free space optical communication is designed, which are composed of three parts: Optical sender are designed as Schmidt-Cassegrain antenna to collimate the laser beam. λ/2 plate and polarization beam splitter are used to decrease the interference of astigmatism and reflection. The dense-lines Fresnel lens as an optical receiver, and further an automatic tracking system is employed to eliminate the pointing error between communication terminals. Experiment shows that the laser divergence of 2 mrad is obtained for the communication system at the wavelength of 850nm, with pointing error less than 5 μ rad, and laser power of 10dB. The detector can receive -17.5dB even in middle fog condition 2 km ranged. The system can be used for free space optical communication in 2km distance except under especial atrocious weather.

Paper Details

Date Published: 9 June 2006
PDF: 5 pages
Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 614915 (9 June 2006); doi: 10.1117/12.674229
Show Author Affiliations
Chang-yu Shen, China JiLiang Univ. (China)
Fei Chen, China JiLiang Univ. (China)
Xiang-dong Yu, China JiLiang Univ. (China)


Published in SPIE Proceedings Vol. 6149:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Shangming Wen; Yaolong Chen; Ernst-Bernhard Kley, Editor(s)

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