In-fiber integrated accelerometer |
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Authors: | Peng Feng Yang Jun Li Xingliang Yuan Yonggui Wu Bing Zhou Ai Yuan Libo |
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Institution: | Photonics Research Center, School of Science, Harbin Engineering University, Harbin 150001, China. yangjun141@263.net |
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Abstract: | A compact in-fiber integrated fiber-optic Michelson interferometer based accelerometer is proposed and investigated. In the system, the sensing element consists of a twin-core fiber acting as a bending simple supported beam. By demodulating the optical phase shift, we obtain that the acceleration is proportional to the force applied on the central position of the twin-core fiber. A simple model has been established to calculate the sensitivity and resonant frequency. The experimental results show that such an accelerometer has a sensitivity of 0.09 rad/g at the resonant frequency of 680 Hz. |
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