| 基于强度调制的光纤声传感器设计研究 |
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| 引用本文： | 余贵水,李晓龙,宗思光.基于强度调制的光纤声传感器设计研究[J].压电与声光,2014,36(3):397-400. |
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| 作者姓名： | 余贵水 李晓龙 宗思光 |
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| 作者单位： | （海军工程大学 电子工程学院，湖北 武汉 430033） |
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| 摘 要： | 在假设发送光纤出射端的光强分布为高斯分布的基础上,提出了一种新型强度调制型光纤声传感器模型。该模型根据单模光纤准直器的耦合特性理论,结合四周固支圆平微机电系统(MEMS)反射膜片,并使用GRIN lens光学透镜实现光强度的调制。仿真结果表明,通过选择合适的调制参数可使光纤声传感器的探测灵敏度较传统强度调制模型有数量级的提高。
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| 关 键 词： | 微机电系统(MEMS) 调制 传感器 耦合 |
Design of Optical Fiber Acoustic Sensor Based on the Intensity Modulation |
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| YU Guishui,LI Xiaolong and ZONG Siguang.Design of Optical Fiber Acoustic Sensor Based on the Intensity Modulation[J].Piezoelectrics & Acoustooptics,2014,36(3):397-400. |
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| Authors: | YU Guishui LI Xiaolong and ZONG Siguang |
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| Affiliation: | (Institute of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | A new intensity modulated optic fiber acoustic sensor model has been proposed based on the assumption that the distribution of the light intensity from transmission fiber is Gaussian distribution. The model is based on single mode fiber collimator coupling characteristics theory, contains clamped circular flat MEMS membrane, and uses GRIN lens to realize the modulation of light intensity. The simulation results show that through choosing proper modulation parameters the sensitivity of the sensor can improve in orders of magnitude than that of the conventional intensity modulation model. |
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| Keywords: | MEMS modulation sensor coupling |
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