【作者】 刘德文； 肖文； 李瑞；

【机构】 北京航空航天大学仪器与光电工程学院光电技术研究所；

【摘要】 本文介绍了一种采用半导体刻蚀的微机械结构反射式光纤传感器,由其感受声音讯号,采用光纤将光投射到该结构上,其随声讯号产生振动,改变了光纤端面和微机械结构之间的距离,从而改变了进入接收光纤的光功率,实现了声音对光的调制,同时从理论上分析了光强调制的原理,并对研制的光纤麦克风系统进行了测试。更多还原

【Abstract】 Fiber-microphone is a new type reflective intensity modulated fiber-optic sensor. The micro-mechanism structure of the sensor take the sound information. It vibrates with sound information and changes the distance between fiber end and the micro-mechanism structure, so the light power to incept fiber also changes. In this way, the sound information is modulated on the light. The principle of the reflective intensity modulator has been analyzed and some tests of the microphone have been done.更多还原