title: A Micro Bubble Structure Based Fabry-Perot Optical Fiber Strain Sensor with High Sensitivity and Low-Cost Characteristics.
abstract: A high-sensitivity, low-cost, ultrathin, hollow fiber micro bubble structure was proposed; such a bubble can be used to develop a high-sensitivity strain sensor based on a Fabry-Perot interferometer (FPI). The micro bubble is fabricated at the fiber tip by splicing a glass tube to a single mode fiber (SMF) and then the glass tube is filled with gas in order to expand and form a micro bubble. The sensitivity of the strain sensor with a cavity length of about 155 μm and a bubble wall thickness of about 6 μm was measured to be up to 8.14 pm/μϵ.
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. S1505018@st.nuc.edu.cn.
authors.forename: Lu
authors.initials: L
authors.lastname: Yan
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. guizhiguo@nuc.edu.cn.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Gui
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. wanggunjun@nuc.edu.cn.
authors.forename: Guanjun
authors.initials: G
authors.lastname: Wang
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. anyongquan107@hotmail.com.
authors.forename: Yongquan
authors.initials: Y
authors.lastname: An
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. S1505032@st.nuc.edu.cn.
authors.forename: Jinyu
authors.initials: J
authors.lastname: Gu
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. S1505016@st.nuc.edu.cn.
authors.forename: Meiqin
authors.initials: M
authors.lastname: Zhang
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. S1505033@st.nuc.edu.cn.
authors.forename: Xinglin
authors.initials: X
authors.lastname: Liu
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. wangzhibin@nuc.edu.cn.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. wanggao@nuc.edu.cn.
authors.forename: Gao
authors.initials: G
authors.lastname: Wang
authors.affiliation: School of Instrument and Electronics, North University of China, Taiyuan 030051, China. pgjia@nuc.edu.cn.
authors.forename: Pinggang
authors.initials: P
authors.lastname: Jia
keywords: Fabry–Perot; optical fiber sensor; strain measurement