Article ID Journal Published Year Pages File Type
5449373 Optics Communications 2017 4 Pages PDF
Abstract
The use of a polymer fiber as a refractive index sensor is proposed. A fiber Bragg grating is inscribed near the fiber tip and the fiber is cut shorter thus creating a Fabry-Perot cavity. The reflections between the fiber Bragg grating and the fiber end-face create a Fabry-Perot interferometer. The sensor was characterized to refractive index changes at constant temperature and to temperature at constant refractive index using a fast Fourier transform analysis of the interference signal. The sensor revealed a sensitivity of −1.94RIU−1 with a resolution of 1×10−3RIU and low sensitivity to temperature, with a cross sensitivity to temperature of 3.6×10−4RIU/°C.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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