| 基于法布里-珀罗干涉仪的高灵敏度光纤传声器 |
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| 引用本文： | 赵龙江,冯杰,程进,冯晖,邹小平.基于法布里-珀罗干涉仪的高灵敏度光纤传声器[J].北京理工大学学报,2014,34(12):1294-1298. |
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| 作者姓名： | 赵龙江 冯杰 程进 冯晖 邹小平 |
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| 作者单位： | 中国电子科技集团公司第三研究所,北京 100015;北京信息科技大学传感技术研究中心,北京 100101 |
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| 摘 要： | 论文系统完整地描述了基于法布里-珀罗干涉仪的高灵敏度光纤传声器的研究,内容包括法布里-珀罗干涉仪、光强度解调和电压输出. 根据基本原理分析和计算,通过对结构紧凑传感头、放大的自发辐射(ASE)宽带光源与密波分复用器(DWDM)选配组合的相干光源以及跨阻和前置放大电路的设计,制作完成了光纤传声器. 该光纤传声器具有高灵敏度值为247 mV/Pa,在频率范围30 Hz～4 kHz内的平坦度小于2 dB,以及高信噪比和低总谐波失真.
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| 关 键 词： | 法布里-珀罗干涉仪 光强解调 DWDM 光纤传声器 高灵敏度 |
| 收稿时间： | 2013/5/10 0:00:00 |
A High Sensitivity Fiber-Optic Microphone Based on Fabry-Perot Interferometer |
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| ZHAO Long-jiang,FENG Jie,CHENG Jin,FENG Hui and ZOU Xiao-ping.A High Sensitivity Fiber-Optic Microphone Based on Fabry-Perot Interferometer[J].Journal of Beijing Institute of Technology(Natural Science Edition),2014,34(12):1294-1298. |
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| Authors: | ZHAO Long-jiang FENG Jie CHENG Jin FENG Hui and ZOU Xiao-ping |
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| Institution: | 1.The Third Research Institute of China Electronics Technology Group Corporation, Beijing 100015, China2.Research Center for Sensor Technology, Beijing Information Science and Technology University, Beijing 100101, China |
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| Abstract: | A high sensitivity fiber-optic microphone based on Fabry-Perot interferometer was studied systemically and comprehensively, including Fabry-Perot interferometer, light intensity demodulation and voltage output. According to the analysis and calculation of basic principles, a fiber-optic microphone was realized and manufactured with a sensor cell of compact structure, a coherent light source of optional assembly by amplified spontaneous emission (ASE) broadband light source and dense wavelength division multiplexing (DWDM), and electric circuits of transimpedance amplifier and pre-amplifier. The performance of the fiber-optic microphone was characterized. The results show the high sensitivity of 247 mV/Pa, frequency range of 30 Hz~4 kHz with conformity less than 2 dB, and high SNR and low total harmonic distortion. |
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| Keywords: | Fabry-Perot interferometer light intensity demodulation DWDM fiber-optic microphone high sensitivity |
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