星间激光通信终端光学天线的隔离度

杨成龙; 颜昌翔; 杨宇飞

doi:10.3788/CO.20171001.0462

Volume 10 Issue 4

Jul. 2017

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Article Contents

Chinese Optics > 2017 > 10(4): 462-468.

YANG Cheng-long, YAN Chang-xiang, YANG Yu-fei. Isolation of optical antenna of inter-satellites laser communication terminals[J]. Chinese Optics, 2017, 10(4): 462-468. doi: 10.3788/CO.20171001.0462

Citation:

YANG Cheng-long, YAN Chang-xiang, YANG Yu-fei. Isolation of optical antenna of inter-satellites laser communication terminals[J]. Chinese Optics, 2017, 10(4): 462-468. doi: 10.3788/CO.20171001.0462

YANG Cheng-long, YAN Chang-xiang, YANG Yu-fei. Isolation of optical antenna of inter-satellites laser communication terminals[J]. Chinese Optics, 2017, 10(4): 462-468. doi: 10.3788/CO.20171001.0462

Citation:

YANG Cheng-long, YAN Chang-xiang, YANG Yu-fei. Isolation of optical antenna of inter-satellites laser communication terminals[J]. Chinese Optics, 2017, 10(4): 462-468. doi: 10.3788/CO.20171001.0462

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Isolation of optical antenna of inter-satellites laser communication terminals

doi: 10.3788/CO.20171001.0462

YANG Cheng-long^{1, 2
,},
YAN Chang-xiang^{1
,
,},
YANG Yu-fei^{1, 2}

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

National High Technology Research and Development Program of China 2011AA12A103

More Information

Corresponding author: YAN Chang-xiang, E-mail:yancx@ciomp.ac.cn
Received Date: 05 Feb 2017
Rev Recd Date: 28 Mar 2017
Publish Date: 01 Aug 2017

Abstract

Abstract

To meet the requirement of inter-satellites laser communication for higher isolation level of optical antenna and achieve the simulation analysis and optimization of optical antenna's isolation level, a method using the YNI value (characteristic value of narcissus in infrared optical system) as the evaluation of back-reflection energy intensity of optical element surfaces and increasing the isolation level of optical antenna by controlling its optimization is presented. An entity model of Cassegrain antenna in an inter-satellites laser communication terminal is established by LightTools software, and back-reflection ratio of each element surface is obtained through simulation and analysis. Optical antenna's structure is optimized by increasing the YNI value of each element surface by ZEMAX software. Comparing the results before and after optimization, the optical antenna's back-reflection ratio decreases from 3.068 8×10^-4 to 1.075 5×10^-5 and the isolation level decreases from -35.13 dB to -49.68 dB. The optimized Cassegrain antenna has a high isolation level, which can be used for inter-satellites laser communication.
- laser communication,
- isolation,
- back-reflection,
- YNI value

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References(16)

References

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