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采用光纤布喇格光栅作为基本传感器件,设计制作了光纤光栅水听器 利用匹配光纤光栅解调技术,实现了高灵敏度、高速度的动态信号测量,并进行了相关的水下声音测量实验 实验系统可测量水声信号频率范围为10Hz~3kHz,测量动态范围为60dB,其结果具有很高的线性度。
Using fiber Bragg grating as the basic sensing device, a fiber grating hydrophone is designed and fabricated using matched FBG demodulation technology to realize the dynamic signal measurement with high sensitivity and high speed, and related underwater sound measurement experiment System can measure underwater acoustic signal frequency range of 10Hz ~ 3kHz, measuring the dynamic range of 60dB, the result has a high linearity.