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《Chinese Journal of Sensors and Actuators》 2018-06
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Interferometric Fiber Sensor Based on Thin Core Fiber and Double Spherical-Shape Structure

LI Deqiang;CAO Ye;GONG Shunshun;XIN Pengcheng;SUN Zhaoyang;YANG Changlong;LI Lijun;School of Electronic Information,Qingdao University;Shandong University of Science and Technology College of Electronic Communication and Physics;  
An interferometric optical fiber sensor based on thin-core fiber and double spherical-shape structure is fabricated.Two spherical-shape structures are fabricated on one end of two single-mode fiber,respectively. Then they are connected by a thin-core fiber to form a MZ interference structure,which is used to measure three physical quantities of temperature,refractive index and force.The experimental results show that the sensitivity of temperature,refractive index and tensile force are 0.066 5 nm/℃,-33.652 nm/RIU,-0.360 8 nm/N,respectively. And the linearity are good. The sensing structure is widely used in environmental monitoring,medical,health and safety monitoring.
【Fund】: 国家自然科学基金应急管理项目(11444001)
【CateGory Index】: TP212
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