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.
Analysis of mode instability in DFB fiber laser hydrophone array
Fifth Symposium on Novel Optoelectronic Detection Technology and Application ; 2018 ; Xi'an,China
Proc. SPIE ; 11023
2019-03-12
Conference paper
Electronic Resource
English
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