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| 一种基于反馈环的全光纤干涉型传声器 | |
| 引用本文： | 吴东方,贾波,郑福林,叶佳.一种基于反馈环的全光纤干涉型传声器[J].应用声学,2007,26(4):218-222. |
| 作者姓名： | 吴东方 贾波 郑福林 叶佳 |
| 作者单位： | 1. 复旦大学光纤研究中心,上海,200433 2. 同济大学声学研究所,上海,200433 3. 复旦大学电子工程系,上海,200433 |
| 摘 要： | 设计了一种基于光纤反馈环的全光纤干涉型传声器，它直接利用声压作用于光纤时产生的光弹效应对光相位进行调制，并通过3×3耦合器构建的反馈环结构形成干涉效应，从而使得输出光信号经光电转换和放大后可以直接驱动扬声器还原出原输入语音信号。我们从理论和实验上对这种全光纤传声器进行了研究，在该传声器的重要参数测量方面均取得了较好的效果。 |
| 关 键 词： | 光干涉 光弹效应 全光纤 传声器 反馈环 |
| 修稿时间： | 2005-10-172007-05-21 |
An all-fiber interference microphone using fiber-ring technique |
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| WU Dong-Fang,JIA Bo,ZHENG Fu-Lin and YE Jia.An all-fiber interference microphone using fiber-ring technique[J].Applied Acoustics,2007,26(4):218-222. | |
| Authors: | WU Dong-Fang JIA Bo ZHENG Fu-Lin and YE Jia |
| Institution: | 1 Optic Fiber Research Center, Fudan University, Shanghai 200433;2 Institute of Acoustics, Tongji University, Shanghai 200433;3 Department of Electronic Engineering, Fudan University, Shanghai 200433 |
| Abstract: | An all-fiber interference microphone based on fiber-ring structure is described which uses the acoustic signal for photoelastic modulation of the phase of light propagat- ing in a fiber and a passive fiber-ring made of a 3×3 fiber coupler to produce interference without any electric intermediary.Then the output optic signal drives a speaker to re- cover the original acoustic signal after photo-electric conversion and amplification.The designed fiber-optic microphone system is realized and tested. |
| Keywords: | Interference Photoelastic effect All-fiber Microphone Fiber-ring |
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