Composite-cavity-based Fabry-Perot interferometric strain sensors |
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| Authors: | Zhang Jianzhong Peng G D Yuan Libo Sun Weimin |
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| Affiliation: | Department of Physics, Harbin Engineering University, Harbin 150001, China. zhangjianzhong@hrbeu.edu.cn |
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| Abstract: | A composite-cavity-based Fabry-Perot interferometric strain sensor system is proposed to gain the minimum cross sensitivity to temperature and a high multiplexing capability at the same time. The interrogation of the sensor system is based on a white-light interferometric technology, and the demodulation is achieved by analyzing the coherence spectra. A demonstration system with two sensors is presented and tested. |
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