摘要
We propose a novel refractive index sensor based on Michelson interferometer by using double-core microfiber.Through the reflection of the end and taper of double-core fiber(DCF),the Michelson interference spectrum is formed.Owing to the structure characteristic of double-core microfiber,this interferometer can achieve the measurement of refractive index(RI)and temperature.The experimental results show that the refractive index sensitivity of the interferometer is 2377.80 nm/RIU at the diameter of the taper waist of 8.76μm.In the temperature ranges from 30°C to 60°C,the temperature sensitivity is 0.07048 nm/°C.This sensor has the advantage of high refractive index sensitivity.
作者
ZHANG Hongling
ZHANG Fang
CONG Bitong
QI Yuefeng
张红岭;张芳;丛碧彤;齐跃峰(School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China;Zhangjiakou Key Laboratory for Intelligent Architecture,Hebei University of Architecture,Zhangjiakou 075000,China;Department of Information Engineering,Hebei University of Environmental Engineering,Qinhuangdao 066004,China)
基金
supported by the National Natural Science Foundation of China(No.61735011)
the Science and Technology Research Project of Hebei University(No.QN2017141)
the Key Research and Development Program of Hebei Province(No.19251703D)。
