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Optical Engineering

Influence of misalignment and aberrations on antenna received power in free-space laser communications
Author(s): Liying Tan; Yuqiang Yang; Jing Ma; Guoxian Zheng
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Paper Abstract

To evaluate the influence of wavefront aberrations on antenna received power in free-space laser communications, an aberration attenuation factor is proposed, based on which the power penalty at the receiver due to misalignment and primary aberrations is investigated. It is shown that antenna received power decreases gradually with increasing misalignment and aberrations. A comparison shows that tilt (misalignment) has greater influence than other primary aberrations. When the rms aberration value is 0.1λ, the received power penalties caused by tilt, astigmatism, coma, curvature, and spherical aberrations are about 40%, 36%, 35%, 24%, and 23%, respectively. In addition, the obscuration ratio of the transmitter antenna has a noticeable but relatively minor influence on the aberration attenuation factor.

Paper Details

Date Published: 1 April 2009
PDF: 5 pages
Opt. Eng. 48(4) 044201 doi: 10.1117/1.3116702
Published in: Optical Engineering Volume 48, Issue 4
Show Author Affiliations
Liying Tan, Harbin Institute of Technology (China)
Yuqiang Yang, Harbin Institute of Technology (China)
Jing Ma, Harbin Institute of Technology (China)
Guoxian Zheng, Harbin Institute of Technology (China)

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