| 光纤麦克风的理论和实验研究 |
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| 引用本文： | 蒋永梁,徐海英,黄晋竹.光纤麦克风的理论和实验研究[J].传感技术学报,2004,17(4):713-715,719. |
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| 作者姓名： | 蒋永梁 徐海英 黄晋竹 |
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| 作者单位： | 1. 东南大学电子工程系,南京,210096
2. 东南大学物理系,南京,210096 |
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| 摘 要： | 一种新型的反射式光纤麦克风,它利用反射式光纤传感探头实现声音对光的外调制.本文从理论和实验两方面研究了反射式光纤麦克风的可行性,并对研制的光纤麦克风系统进行了测试.利用成像原理得出了反射式光纤麦克风的光强度调制函数,根据薄膜振动理论得到了弹性膜片的固有频率和基频,Y型光纤耦合器的使用大大简化了传感器探头的结构.通过实验实现了光纤麦克风系统的预期功能.
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| 关 键 词： | 光纤麦克风 反射式强度调制 光纤耦合器 |
| 文章编号： | 1004-1699(2004)04-0713-03 |
The Theoretical and Experimental Research of Fiber2Optic Microphone |
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| JIANG Yongliang,XU Haiying,HUANG Jinzhu.The Theoretical and Experimental Research of Fiber2Optic Microphone[J].Journal of Transduction Technology,2004,17(4):713-715,719. |
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| Authors: | JIANG Yongliang XU Haiying HUANG Jinzhu |
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| Affiliation: | JIANG Yong liang 1,XU Hai ying 2,HUANG Jin zhu 11. Department of Electronic Engineering,Southeast University,Nanjing 210096,China,2. Department of Physics,Southeast University,Nanjing 210096,China. |
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| Abstract: | A novel reflective fiber optic microphone was introduced. It uses a reflective fiber optic sensing probe to realize the outside modulation of sound to light. The feasibility of reflective fiber optic microphone was investigated theoretically and experimentally. The designed fiber optic microphone system is realized and tested. Optical intensity modulation function of the fiber optic microphone can be got by using imaging principle. According to the oscillation theory of membrane, we obtain the inherence frequency and basic frequency of the flexible membrane. The using of Y type fiber optic coupler greatly predigests the configuration of the sensor probe. The expecting function of the fiber optic microphone system has been realized in experiments. |
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| Keywords: | fiber-optic microphone reflective intensity modulation fiber-optic coupler |
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