Study of Rayleigh-Backscattering Induced Coherence Collapse in an Asymmetric DFB FL Sensor

Wen LIU; Lina MA; Zhengliang HU; Ying FENG; Huayong YANG

doi:10.1007/s13320-016-0326-8

Journals >Photonic Sensors >Volume 6 >Issue 3 >Page 209 > Article

Photonic Sensors
Vol. 6, Issue 3, 209 (2016)

Study of Rayleigh-Backscattering Induced Coherence Collapse in an Asymmetric DFB FL Sensor

Wen LIU^1、*, Lina MA², Zhengliang HU², Ying FENG¹, and Huayong YANG¹

Author Affiliations

¹College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, 410073, China

²Academy of Ocean Science and Engineering, National University of Defense Technology, Changsha, 410073, China

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DOI: 10.1007/s13320-016-0326-8 Cite this Article

Wen LIU, Lina MA, Zhengliang HU, Ying FENG, Huayong YANG. Study of Rayleigh-Backscattering Induced Coherence Collapse in an Asymmetric DFB FL Sensor[J]. Photonic Sensors, 2016, 6(3): 209 Copy Citation Text

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Abstract

Rayleigh-back scattering induced coherence collapse of an asymmetric distributed feedback fiber laser (DFB FL) sensor is investigated using a composite cavity model. The coherence collapse threshold condition of the asymmetric DFB FL sensor is measured. The DFB FL sensor shows different dynamic behaviors in different pump configurations. According to the asymmetric behavior to the external optical feedback, a novel method to find the actual phase shift position of the asymmetric DFB FL sensor is presented.

Keywords

Asymmetric DFB fiber laser sensor coherence collapse phase shift Rayleigh backscattering

Wen LIU, Lina MA, Zhengliang HU, Ying FENG, Huayong YANG. Study of Rayleigh-Backscattering Induced Coherence Collapse in an Asymmetric DFB FL Sensor[J]. Photonic Sensors, 2016, 6(3): 209

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