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Analysis of mode instability in DFB fiber laser hydrophone array
Author(s): Haiyan Zhang; Baichao Zheng; Pan Li; Zhen Li
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Paper Abstract

In order to increase the multiplexing capacity and optimize the noise level and power of distribute feedback fiber laser hydrophone array, the factor of the mode instability has been studied. Mode instability characteristics of DFB fiber laser hydrophone due to multiple external reflections is modeled, and the dependent condition and suppression method of DFB fiber laser array is carefully analyzed. It can be concluded that the mainly reason for the mode instability of the DFB fiber laser hydrophone array is related to the mode splitting caused by external cavity feedback light reflected by the fiber connector, and the reduction of fiber flange connector reflectivity can effectively suppress the mode instability.

Paper Details

Date Published: 12 March 2019
PDF: 6 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 1102358 (12 March 2019); doi: 10.1117/12.2522017
Show Author Affiliations
Haiyan Zhang, Beijing Aerospace Control Device Institute (China)
Beijing Optical Fiber Sensing System Engineering Technology Research Ctr. (China)
Baichao Zheng, Beijing Aerospace Control Device Institute (China)
Beijing Optical Fiber Sensing System Engineering Technology Research Ctr. (China)
Pan Li, Beijing Aerospace Control Device Institute (China)
Beijing Optical Fiber Sensing System Engineering Technology Research Ctr. (China)
Zhen Li, Beijing Aerospace Control Device Institute (China)
Beijing Optical Fiber Sensing System Engineering Technology Research Ctr. (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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