title: Magnetic field sensing based on magnetic-fluid-clad multimode-singlemode-multimode fiber structures.
abstract: Magnetic field sensing based on magnetic-fluid-clad multimode-singlemode- multimode fiber structures is proposed and experimentalized. The structures are fabricated out using fiber fusion splicing techniques. The sensing principle is based on the interference between the core mode and cladding modes. Two interference dips are observed in our spectral range. Experimental results indicate that the magnetic field sensing sensitivities of 215 pm/mT and 0.5742 dB/mT are obtained for interference dip around 1595 nm. For interference dip around 1565 nm, the sensitivities are 60.5 pm/mT and 0.4821 dB/mT. The response of temperature is also investigated. The temperature sensitivity for the dip around 1595 nm is obtained to be 9.93 pm/°C.
authors.affiliation: College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China. tangjiali1230@gmail.com.
authors.forename: Jiali
authors.initials: J
authors.lastname: Tang
authors.affiliation: College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China. shlpu@usst.edu.cn.
authors.forename: Shengli
authors.initials: S
authors.lastname: Pu
authors.affiliation: College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China. zhuiguang0903@163.com.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Dong
authors.affiliation: College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China. longfengllf@163.com.
authors.forename: Longfeng
authors.initials: L
authors.lastname: Luo