针对海洋环境中不同温度下声音检测的需求，研发了一种基于光纤布喇格光栅(FBG)的温度补偿型水听器。该水听器利用侧面拉伸式结构进行增敏，通过有限元分析方法对水听器结构进行优化，并在该结构中使用了补偿材料聚甲基丙烯酸甲酯(PMMA)，利用其热膨胀效应对FBG进行调制，以降低温度对FBG产生的影响，实现温度补偿。仿真结果表明: 该结构在10~2000 Hz范围内可实现较高增敏，同时水听器的灵敏度增益谱显示出共振特征，相比于远离共振频率处，灵敏度增益有进一步的提高，最高达到145 dB；在海洋温度变化范围内(-2 ℃~30 ℃)可实现波长偏移小于0.01006 nm的温度补偿。

In this paper, a temperature compensated hydrophone based on fiber Bragg grating (FBG) is developed to meet the requirements of sound detection in different temperature in marine environment. The hydrophone is sensitized by the side stretch structure, and the structure of hydrophone is optimized by the finite element analysis method. In this structure, the compensation material Polymethyl methacrylate(PMMA) is used, and its thermal expansion effect is used to modulate FBG, so as to reduce the impact of temperature on FBG and realize temperature compensation. The simulation results show that the structure can achieve higher sensitivity in the range of 10~2000 Hz, and the sensitivity gain spectrum of the hydrophone shows resonance characteristics. Compared with the place far away from the resonance frequency, the sensitivity gain is further improved, reaching 145 dB at most. In the range of ocean temperature (-2 ℃ ~ 30 ℃), the temperature compensation of wavelength shift less than 0.01006 nm can be realized.