Observation of mode instability and coherence collapse in a single-frequency polarization-maintaining fiber ring laser

Mingxiang Ma; Zhengliang Hu; Pan Xu; Yongming Hu

doi:10.1117/1.OE.53.6.066107

24 June 2014 Observation of mode instability and coherence collapse in a single-frequency polarization-maintaining fiber ring laser

Mingxiang Ma, Zhengliang Hu, Pan Xu, Yongming Hu

Author Affiliations +

Optical Engineering, Vol. 53, Issue 6, 066107 (June 2014). https://doi.org/10.1117/1.OE.53.6.066107

Abstract

Mode instability acts as a common feature in single-frequency fiber ring lasers. The mechanism of coherence collapse by mode instability is theoretically analyzed and demonstrated with an unbalanced fiber Michelson interferometer utilizing phase modulation, which is illuminated by a single-frequency erbium-doped fiber ring laser. Multiform mode instability phenomena accompanied with coherence collapse are observed and discussed in detail by tracing the dynamics of the interference fringe visibility. The results show that mode instability would introduce extra phase noises like a false alarm to interferometric fiber optic sensing systems.

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Mingxiang Ma, Zhengliang Hu, Pan Xu, and Yongming Hu "Observation of mode instability and coherence collapse in a single-frequency polarization-maintaining fiber ring laser," Optical Engineering 53(6), 066107 (24 June 2014). https://doi.org/10.1117/1.OE.53.6.066107

Published: 24 June 2014

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