| 一种响应平坦的宽带高灵敏度分布反馈光纤激光水听器 |
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| 引用本文： | 徐华,王昌,彭纲定,张晓磊,王英英,孙志慧,祁海峰,宋志强,倪家升.一种响应平坦的宽带高灵敏度分布反馈光纤激光水听器[J].山东科学,2013,26(4):46-50. |
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| 作者姓名： | 徐华 王昌 彭纲定 张晓磊 王英英 孙志慧 祁海峰 宋志强 倪家升 |
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| 作者单位： | 1山东省光纤传感技术重点实验室，山东省科学院激光研究所，山东 济南 250014；2 新南威尔士大学，澳大利亚 悉尼 2052 |
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| 基金项目： | 国际科技合作项目，山东省自主创新成果转化重大专项，国家自然科学基金，山东省自然科学基金 |
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| 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1 kHz处DFB光纤激光水听器的相位-声压灵敏度为-122.6 dB re rad/μPa,相当于3.8 nm/MPa； 在10 Hz~10 kHz整个频段内频响曲线非常平坦，波动小于±9 dB,并且信噪比与标准压电水听器相当。
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| 关 键 词： | 分布反馈光纤激光水听器 频响 声压灵敏度 |
| 收稿时间： | 2013-03-28 |
A distributed feedback fiber laser hydrophone with high sensitivity and flat frequency response |
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| XU Hua,WANG Chang,PENG Gang-Ding,ZHANG Xiao-Lei,WANG Ying-Ying,SUN Zhi-Hui,QI Hai-Feng,SONG Zhi-Qiang,NI Jia-Sheng.A distributed feedback fiber laser hydrophone with high sensitivity and flat frequency response[J].Shandong Science,2013,26(4):46-50. |
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| Authors: | XU Hua WANG Chang PENG Gang-Ding ZHANG Xiao-Lei WANG Ying-Ying SUN Zhi-Hui QI Hai-Feng SONG Zhi-Qiang NI Jia-Sheng |
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| Institution: | 1. Shandong Provincial Key Laboratory of Fiber Sensing Technology, Laser Institute, Shandong Academyof Sciences, Jinan 250014, China;
2. University of New South Wales, Sydney 2052, Australia |
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| Abstract: | 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/μPa, 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. |
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| Keywords: | distributed feedback fiber laser hydrophone frequency response acoustic sensitivity |
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