14 May 2011 Fiber-optic intrinsic Fabry-Perot interferometric sensors fabricated by femtosecond lasers
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Abstract
A fiber-optic intrinsic Fabry-Perot interferometric (IFPI) sensor was fabricated in single-mode fiber using femtosecond (fs) laser. The fs laser was directly focused into the fiber core to form a local mirror by inducing the refractive index (RI) changes, and the F-P sensor was composed of two local mirrors and the fiber cavity between them. The measured spectrum has a high fringe visibility up to 10 dB. The temperature sensing characteristics of the F-P sensor were studied. Experiment results show that the reflection spectrum linearly shifts against the temperature with the sensitivity of 10.6pm/°C.
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Tingyun Wang, Wenyuan Wang, Na Chen, Fufei Pang, "Fiber-optic intrinsic Fabry-Perot interferometric sensors fabricated by femtosecond lasers", Proc. SPIE 8034, Photonic Microdevices/Microstructures for Sensing III, 80340I (14 May 2011); doi: 10.1117/12.887958; https://doi.org/10.1117/12.887958
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