title: Real time and simultaneous measurement of displacement and temperature using fiber loop with polymer coating and fiber Bragg grating.
abstract: An all-fiber sensor scheme for real time and simultaneous displacement and temperature measurement is presented and demonstrated. The sensor head is formed by cascading a fiber loop with polymer coating with a fiber Bragg grating. The compatibility of the two components is fully utilized. A sensor resolution of 0.14314 V/μm in displacement and 0.00795 nm/°C in temperature are experimentally achieved within a displacement range of 0-50 μm and a temperature range of 20 °C-75 °C, respectively. The fiber loop with the protection of polymer coating is mechanically reliable, which means the sensor head also suits measuring dynamic displacement. A 500 Hz mechanical micro-vibration is successfully measured by the proposed sensor experimentally. In the last part, we perform a test making the sensor reach its maximum deformation and find the surviving sensor still possesses the same responsiveness as before.
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Weigang
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Yongji
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Sieg
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Biao
authors.initials: B
authors.lastname: Wang
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Liyu
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Tieyi
authors.initials: T
authors.lastname: Yan