title: A high sensitive fiber-optic strain sensor with tunable temperature sensitivity for temperature-compensation measurement.
abstract: A high sensitive fiber-optic strain sensor, which consists of a cantilever, a tandem rod and a fiber collimator, was proposed. The tandem rod, which transfer the applied strain to the cantilever, was used for tuning the temperature sensitivity from -0.15 to 0.19 dB/°C via changing the length ratio of the rods. Moreover, due to the small beam divergence of the collimator, high strain sensitivity can be realized via incident-angle sensitive detection-mechanism. A strain detection-range of 1.1 × 103με (with a sensing length of 21.5 mm), a detection limit of 5.7 × 10-3με, and a maximum operating frequency of 1.18 KHz were demonstrated. This sensor is promising for compensating the thermal-expansion of various target objects.
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Min
authors.initials: M
authors.lastname: Bai
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: TingTing
authors.initials: T
authors.lastname: Zhan
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: ZhiBo
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Department of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Jordan Valley Semiconductors Ltd, Shanghai 201216, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Qu