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Appl Opt. 2013 Apr 20;52(12):2670-5. doi: 10.1364/AO.52.002670.

Intrinsic fiber-optic Fabry-Perot interferometer based on arc discharge and single-mode fiber.

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  • 1Chongqing Institute of Green and Intelligent Technology, CAS, Chongqing, China.


We propose a simple intrinsic Fabry-Perot interferometer (FPI) based on single-mode fiber, where a thin film is formed by arc discharge to serve as one mirror of the FPI cavity. The temperature and refractive-index (RI) characteristics of the proposed device are investigated. Experimental results show that the device can provide temperature-independent measurement of RI with a fringe-contrast sensitivity of ~72.59 dB/RIU (RI units). Meanwhile, it can also be used as a temperature sensor with a wavelength sensitivity of ~8 pm/°C. Therefore, the potential simultaneous measurement of RI and temperature could be realized by detecting the variations of fringe contrast and wavelength, respectively.

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