Research of the application of low-precision large aperture nonimaging optics in free-space optical communication system

Jia Wang; Xin Yu

doi:10.1117/12.791094

12 March 2008 Research of the application of low-precision large aperture nonimaging optics in free-space optical communication system

Jia Wang, Xin Yu

Author Affiliations +

Proceedings Volume 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing; 66240U (2008) https://doi.org/10.1117/12.791094
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

A novel receiving antenna using low precision large aperture nonimaging optical apparatus in free-space optical (FSO) communication system has been proposed. The receiving optical antenna of FSO communication system is usually a conventional imaging optical system such as Newton system, Green system or Cassegrain system. It is ineffective to use a large aperture receiving antenna in FSO communication system because the precision imaging optical apparatus will be very expensive with aperture increase, so that, in order to reduce the difficulty of pointing and tracking between transmitter and receiver, the beam divergence has to be increased with the cost of lost part of the transmitted power. Since in the field of FSO communication system, the receiving optical antenna is used not to image but to concentrate optical signal as much as possible, the novel concept of using low precision large aperture nonimaging optical apparatus as receiving optical antenna to replace the conventional imaging optical system was proposed. Several nonimaging apparatus including spherical reflector, elliptical reflector, compound parabolic concentrator (CPC) and conical barrel concentrator are analyzed by ray tracing. Their gain and the transmission rate limitation due to wave-front aberrations are discussed, and their merit used in FSO communication system has been proved.

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Jia Wang and Xin Yu "Research of the application of low-precision large aperture nonimaging optics in free-space optical communication system", Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 66240U (12 March 2008); https://doi.org/10.1117/12.791094

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KEYWORDS

Free space optics

Telecommunications

Reflectors

Imaging systems

Nonimaging optics

Spherical lenses

Antennas

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