Research on optimum local oscillator laser power of the space coherent
laser communication

Yang Zheng; Jianping Zheng; Shoufeng Tong; Huilin Jiang; Wenjun He

doi:10.1117/12.2032236

21 August 2013 Research on optimum local oscillator laser power of the space coherent laser communication

Yang Zheng, Jianping Zheng, Shoufeng Tong, Huilin Jiang, Wenjun He

Proceedings Volume 8906, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Communication Technologies and Systems; 89060H (2013) https://doi.org/10.1117/12.2032236
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

The space coherent laser communication is a very potential and attractive mean as it allows higher speed communication between satellites. The space coherent laser communication makes use of local oscillator laser power to improve the power of received optical signal by mixing local oscillator laser and optical signal together. However, the power of the local laser oscillator can not be increased infinitely, too large but reduces the detection sensitivity. In this paper, starting from the principle of the signal-to-noise ratio of the space coherent laser communication, we found the optimum local oscillator laser power was 28.174mw, under the condition of the selected photodetector specific parameters. It is a great significant for high detection sensitivity and low data error of the actual coherent detection system.

Citation Download Citation

Yang Zheng, Jianping Zheng, Shoufeng Tong, Huilin Jiang, and Wenjun He "Research on optimum local oscillator laser power of the space coherent laser communication", Proc. SPIE 8906, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Communication Technologies and Systems, 89060H (21 August 2013); https://doi.org/10.1117/12.2032236

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