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Research on the influence of local oscillator power on signal-to-noise ratio of system under balance detection mode in 1.55um laser coherent detection system
Author(s): Ce Li; Yu Han; Haixia Chen; Shengjia Zuo
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Paper Abstract

In order to explore the effect of local oscillator optical power on the signal-to-noise ratio (SNR) of the system under the balanced detection method and the traditional single-channel detection mode in the laser coherent detection system. The numerical simulation analysis of the SNR of the coherent detection system is realized by using the local oscillator power.The self-built laser coherent detection platform is used to explore the influence of the local oscillator power on the system measurement range and SNR in the single-channel detection and dual-channel balance detection under the balanced detection mode. The results showed that: in coherent detection systems, balanced detection has certain advantages over single-channel detection. After calculation, in the detection range of 3km, the measured SNR in the balanced detection mode is higher than the single-channel detection SNR by 2.1.This conclusion has certain reference significance for improving the detection effect of the coherent detection system.

Paper Details

Date Published: 12 March 2019
PDF: 8 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110231F (12 March 2019); doi: 10.1117/12.2521614
Show Author Affiliations
Ce Li, Tonghua Normal Univ. (China)
Yu Han, Tonghua Normal Univ. (China)
Haixia Chen, Tonghua Normal Univ. (China)
Shengjia Zuo, Tonghua Normal Univ. (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

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