中文摘要：

采用聚氨酯材料制作的梭形结构对分布反馈（DFB）光纤激光器进行封装，在驻波管校准声场对其进行测试，由OPD4000相位解调仪精确测量光纤激光水听器的相移量。通过测试和数据分析，得到1kHz处DFB光纤激光水听器的相位一声压灵敏度为-122．6dBrerad／IxPa，相当于3．8nm／MPa；在10Hz-10kHz整个频段内频响曲线非常平坦，波动小于±9dB，并且信噪比与标准压电水听器相当。

英文摘要：

A distributed feedback （DFB） fiber laser is packaged with a polyurethane spindle structure for acoustic sensing. It is tested in a standing wave tube calibration field. Phase demodulator OPD4000 is employed to precisely measure the phase shift. We obtain the phase sensitivity of - 122.6 dB re rad/gPa, i. e. 3.8 nm/MPa at 1 kHz. The frequency response is flat in the range of 10 Hz - 10 kHz with the fluctuation of no more than ＋9 dB. Its signal and noise ratio （SNR） is equal to standard PZT hydrophone.