Compact fiber optic accelerometer  

作　　者：彭峰 杨军 吴冰 苑勇贵 李兴亮 周爱 苑立波 

机构地区：[1]Photonics Research Center, School of Science, Harbin Engineering University

出　　处：《Chinese Optics Letters》2012年第1期35-37,共3页中国光学快报（英文版）

基　　金：partially supported by the National Nature Science Foundation of China (Nos.60877046,60707013,60807032,and 60927008);the Key Project of the Nature Science Foundation of Heilongjiang Province(No.ZD200810);the Fundamental Research Funds for the Central Universities (No.HEUCFZ1020)

摘　　要：A compact fiber optic accelerometer based on a Michelson interferometer is proposed and demonstrated. In the proposed system, the sensing element consists of two single-mode fibers glued together by epoxy, which then act as a simple supported beam. By demodulating the optical phase shift, the acceleration is determined as proportional to the force applied on the central position of the two single-mode fibers. This simple model is able to calculate the sensitivity and the resonant frequency of the compact accelerometer. The experimental results show that the sensitivity and the resonant frequency of the accelerometer are 0.42 rad/g and 600 Hz, respectively.A compact fiber optic accelerometer based on a Michelson interferometer is proposed and demonstrated. In the proposed system, the sensing element consists of two single-mode fibers glued together by epoxy, which then act as a simple supported beam. By demodulating the optical phase shift, the acceleration is determined as proportional to the force applied on the central position of the two single-mode fibers. This simple model is able to calculate the sensitivity and the resonant frequency of the compact accelerometer. The experimental results show that the sensitivity and the resonant frequency of the accelerometer are 0.42 rad/g and 600 Hz, respectively.

关 键 词：Michelson interferometers Natural frequencies Single mode fibers 

分 类 号：TN253[电子电信—物理电子学]