Development of High Sensitivity Eight-Element Multiplexed Fiber Laser Acoustic Pressure Hydrophone Array and Interrogation System  

作　　者：Ming LI Zhihui SUN Xiaolei ZHANG Shujuan LI Zhiqiang SONG Meng WANG Jian GUO Jiasheng NI Chang WANG Gangding PENG Xiangang XU 

机构地区：[1]State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China [2]Jinan Research Center, Laser Institute of Shandong Academy of Sciences, Jinan, 250014, China [3]School of Electronic Engineering and Telecommunication, University of New South Wales, Sydney, 2052, Austrilia

出　　处：《Photonic Sensors》2017年第3期253-260,共8页光子传感器（英文版）

基　　金：Acknowledgment This work was financially supported by the National Natural Science Foundation of China （No. 60317101）, Key Research and Development Plan of Shandong Province （No. 2015GSF11500）, and Natural Science Foundation of Shandong Province （No. ZR2013FL029）.

摘　　要：Fiber laser hydrophones have got widespread concems due to the unique advantages and broad application prospects. In this paper, the research results of the eight-element multiplexed fiber laser acoustic pressure array and the interrogation system are introduced, containing low-noise distributed feedback fiber laser （DFB-FL） fabrication, sensitivity enhancement packaging, and interferometric signal demodulation. The frequency response range of the system is 10Hz-10kHz, the laser frequency acoustic pressure sensitivity reaches 115 dB re Hz/Pa, and the equivalent noise acoustic pressure is less than 60μa/Hz^1/2. The dynamic range of the system is greater than 120 dB.Fiber laser hydrophones have got widespread concems due to the unique advantages and broad application prospects. In this paper, the research results of the eight-element multiplexed fiber laser acoustic pressure array and the interrogation system are introduced, containing low-noise distributed feedback fiber laser （DFB-FL） fabrication, sensitivity enhancement packaging, and interferometric signal demodulation. The frequency response range of the system is 10Hz-10kHz, the laser frequency acoustic pressure sensitivity reaches 115 dB re Hz/Pa, and the equivalent noise acoustic pressure is less than 60μa/Hz^1/2. The dynamic range of the system is greater than 120 dB.

关 键 词：Fiber laser hydrophone DFB-FL packaging sensitization eight-element multiplex interferometric demodulation 

分 类 号：TN248[电子电信—物理电子学] TB565.1[交通运输工程—水声工程]