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

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

Open Access

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

Author(s) -

Yongfeng Wu,

Bo Liu,

Jing Wu,

Lilong Zhao,

Tingting Sun,

Yaya Mao,

Tong Nan,

Jin Wang

Publication year - 2019

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2019.2933561

Subject(s) - fabry–pérot interferometer , interferometry , materials science , fiber optic sensor , vernier scale , optical fiber , optics , sensitivity (control systems) , transverse plane , fiber , optoelectronics , electronic engineering , physics , engineering , wavelength , structural engineering , composite material

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.

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