An optical fiber MEMS pressure sensor using microwave photonics filtering technique

Yiping Wang; Ming Wang; Xiaoqi Ni; Wei Xia; Dongmei Guo; Hui Hao; Qingyu Ma; Wei Zhuang

doi:10.1117/12.2263415

23 April 2017 An optical fiber MEMS pressure sensor using microwave photonics filtering technique

Yiping Wang, Ming Wang, Xiaoqi Ni, Wei Xia, Dongmei Guo, Hui Hao, Qingyu Ma, Wei Zhuang

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032368 (2017) https://doi.org/10.1117/12.2263415
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

A fiber-optic micro-electromechanical systems (MEMS) extrinsic Fabry-Perot interferometer (EFPI) pressure sensor exploiting microwave photonics filtering technique is firstly proposed and experimentally demonstrated. A single-bandpass microwave photonic filter (MPF) which mainly consists of a spectrum-sliced light source, a pressurized EFPI, a phase modulator (PM) and a length of dispersion compensating fiber (DCF) is demonstrated. The frequency response of the filter with respect to the pressure is studied. By detecting the resonance frequency shifts of the MPF, the pressure can be determined. The theoretical and experimental results show that the proposed EFPI pressure sensor has a higher resolution and higher speed than traditional methods based on optical spectrum analysis. The sensitivity of the sensor is measured to be as high as 86 MHz/MPa in the range of 0-4MPa.

Citation Download Citation

Yiping Wang, Ming Wang, Xiaoqi Ni, Wei Xia, Dongmei Guo, Hui Hao, Qingyu Ma, and Wei Zhuang "An optical fiber MEMS pressure sensor using microwave photonics filtering technique", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032368 (23 April 2017); https://doi.org/10.1117/12.2263415

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