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Proceedings Paper

Research of the suppression of the phase noise in DFB fiber laser by self-injection locking
Author(s): Jianfeng Tang; Yinfa Zhang; Zhenglong Yu; Shuidong Xiong; Lina Ma
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Paper Abstract

The intrinsic phase noise of distributed feedback (DFB) fiber laser greatly reduces the signal to noise ratio (SNR) of unbalance interferometric fiber sensor system, which has a negative influence on the demodulation of tiny signal. In order to suppress the phase noise of DFB fiber laser (DFB-FL), a self-injecion locking DFB-FL was presented. Result of experiment demonstrated that the phase noise can be suppressed by the self-injection locking structure and the effect of suppression was improved with the increase of the length of locking ring. When the length of locking ring is two meters, the phase noise above 500Hz decreases by 8 dB / √Hz demodulated by an one meter optical path difference asymmetric Michelson Interference, and the mode is not hoping in eight hours. Contrast with the unlocked DFB-FL, the pump efficiency of self-injection locking DFB-FL is increased by 30%.

Paper Details

Date Published: 9 November 2016
PDF: 7 pages
Proc. SPIE 10018, Advanced Laser Processing and Manufacturing, 100180J (9 November 2016); doi: 10.1117/12.2247568
Show Author Affiliations
Jianfeng Tang, Xi'an Institute of the People's Liberation Army Academy of Telecommunications (China)
Yinfa Zhang, Xi'an Institute of the People's Liberation Army Academy of Telecommunications (China)
Zhenglong Yu, Xi'an Institute of the People's Liberation Army Academy of Telecommunications (China)
Shuidong Xiong, National Univ. of Defense Technology (China)
Lina Ma, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 10018:
Advanced Laser Processing and Manufacturing
Minlin Zhong; Jonathan Lawrence; Minghui Hong; Jian Liu, Editor(s)

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