A Transverse Load Sensor With Ultra-Sensitivity Employing Vernier-Effect Improved Parallel-Structured Fiber-Optic Fabry-Perot Interferometer

Yongfeng Wu; Bo Liu; Jing Wu; Lilong Zhao; Tingting Sun; Yaya Mao; Tong Nan; Jin Wang

doi:10.1109/ACCESS.2019.2933561

IEEE Access (Jan 2019)

A Transverse Load Sensor With Ultra-Sensitivity Employing Vernier-Effect Improved Parallel-Structured Fiber-Optic Fabry-Perot Interferometer

Yongfeng Wu,
Bo Liu,
Jing Wu,
Lilong Zhao,
Tingting Sun,
Yaya Mao,
Tong Nan,
Jin Wang

Affiliations

Yongfeng Wu: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Bo Liu: ORCiD; Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Jing Wu: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Lilong Zhao: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Tingting Sun: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Yaya Mao: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Tong Nan: Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing, China
Jin Wang: School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, China

DOI: https://doi.org/10.1109/ACCESS.2019.2933561
Journal volume & issue: Vol. 7
pp. 120297 – 120303

Abstract

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The parallel structured fiber-optic Fabry-Perot interferometer (FPI) is theoretically proposed and experimentally demonstrated for transverse load measurement based on Vernier-effect. This kind of sensor consists of a hollow microsphere cavity fiber-optic FPI for sensing function and an air cavity for reference, both of which are parallel connected by a 3 dB optical fiber coupler with the functionality of Vernier-effect. Experimental results indicate that the proposed sensor can provide a high transverse load sensitivity of -3.75 nm/N, which is 3.4 times higher than single hollow microsphere cavity FPI. Moreover, with the excellent features of low cost, easy fabrication, and stable sensing, the parallel structured FPIs proposed will provide a new vision for high sensitivity transverse load sensing.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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