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Opt Lett. 2007 Jul 1;32(13):1833-5.

Composite-cavity-based Fabry-Perot interferometric strain sensors.

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  • 1Department of Physics, Harbin Engineering University, Harbin 150001, China.


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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