Research on the effect of key system parameters on linewidth tolerance of space coherent optical communication

You Guo; Yijun Jiang; Xue Wang; Jiahan Li; Mi Li

doi:10.1117/12.2620335

26 July 2022 Research on the effect of key system parameters on linewidth tolerance of space coherent optical communication

You Guo, Yijun Jiang, Xue Wang, Jiahan Li, Mi Li

Author Affiliations +

Proceedings Volume 12278, 2021 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing; 122780O (2022) https://doi.org/10.1117/12.2620335
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

In order to investigate the influence of different system parameters on linewidth tolerance in space coherent optical communication system, we give the ensemble average bit error rate (BER) model of binary phase-shift keying (BPSK) modulation and homodyne detection space coherent optical communication system. The BER model also considers the laser linewidth induced phase noise and pointing error. Based on the BER model, the numerical simulation is conducted to investigate the relationship between linewidth tolerance and different system parameters of divergence angle, receiving aperture, zenith angle, and transmitted optical power. Through our numerical simulation, it is found that the linewidth tolerance will change from several kHz to several hundred kHz. Besides, linewidth tolerance will decrease with the increase of divergence angle and zenith angle. While with the increase of receiving aperture and transmitted optical power, the linewidth tolerance will increase. Also, we find that the linewidth tolerance changes more obviously with the variation of the zenith angle. This paper has a good reference value for the selection of laser linewidth of the space coherent optical communication system under different system parameters.

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You Guo, Yijun Jiang, Xue Wang, Jiahan Li, and Mi Li "Research on the effect of key system parameters on linewidth tolerance of space coherent optical communication", Proc. SPIE 12278, 2021 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 122780O (26 July 2022); https://doi.org/10.1117/12.2620335

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KEYWORDS

Tolerancing

Telecommunications

Astronomical imaging

Optical communications

Digital signal processing

Optical amplifiers

Modulation

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