Research on Michelson interference refractive index sensing technique based on double-core microfiber

doi:https://doi.org/10.1007/s11801-021-1043-0

Home > Archive>Volume 17, Issue 9, 2021 >513-517. DOI:https://doi.org/10.1007/s11801-021-1043-0

Research on Michelson interference refractive index sensing technique based on double-core microfiber
DOI:
                        https://doi.org/10.1007/s11801-021-1043-0
                    
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                        ZHANG Hongling1,2ZHANG Hongling
School of Information Science and Engineering,Yanshan University, Qinhuangdao 066004, China;Zhangjiakou Key Laboratory for Intelligent Architecture, Hebei University of Architecture, Zhangjiakou 075000,China
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ZHANG Fang1,3ZHANG Fang
School of Information Science and Engineering,Yanshan University, Qinhuangdao 066004, China;Department of Information Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066004, Chi-na
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CONG Bitong1CONG Bitong
School of Information Science and Engineering,Yanshan University, Qinhuangdao 066004, China
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QI Yuefeng1QI Yuefeng
School of Information Science and Engineering,Yanshan University, Qinhuangdao 066004, China
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Affiliation:1. School of Information Science and Engineering,Yanshan University, Qinhuangdao 066004, China;2.Zhangjiakou Key Laboratory for Intelligent Architecture, Hebei University of Architecture, Zhangjiakou 075000,;China;3. Department of Information Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066004, Chi-na
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Abstract:

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 2 377.80 nm/RIU at the diameter of the taper waist of 8.76 µm. In the temperature ranges from 30 °C to 60 °C, the temperature sensitivity is 0.070 48 nm/°C. This sensor has the advantage of high refractive index sensitivity.

Reference

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ZHANG Hongling, ZHANG Fang, CONG Bitong, QI Yuefeng. Research on Michelson interference refractive index sensing technique based on double-core microfiber[J]. Optoelectronics Letters,2021,17(9):513-517

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Received:April 03,2021
Revised:May 22,2021
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Online: July 09,2021
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