Author/Authors :
Zhong، نويسنده , , Chuan-Chou Shen، نويسنده , , Changyu and You، نويسنده , , Li-Yang and Chu، نويسنده , , Jinlei and Zou، نويسنده , , Xin and Dong، نويسنده , , Xinyong and Jin، نويسنده , , Yongxing and Wang، نويسنده , , Jianfeng، نويسنده ,
Abstract :
A fiber sensor based on polarization-maintaining fiber loop mirror (FLM) for liquid refractive index absolute measurement is described. Two sections of polarization maintaining fibers (PMFs) with different length were inserted into the FLM. One section of PMF was chemical etched for liquid refractive index measurement and the other one for reference. Liquid refractive index absolute measurement can be obtained by detecting the interference wavelength difference corresponding to the two sections of PMFs. High sensitivity of 63.82 ± 0.04 nm/RIU (refractive index unit) and a resolution of 3.14 × 10−4 RIU were obtained for the proposed liquid refractive index sensor.
Keywords :
Liquid refractive index sensor , Polarization-maintaining fiber , Fiber loop mirror , Absolute measurement
