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...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.展开更多
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)。
文摘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.
