Multi-mode interferometer-based twist sensor with low temperature sensitivity employing square coreless fibers | Zendy

Binbin Song | Zendy; Yinping Miao | Zendy; Wei Lin | Zendy; Hao Zhang | Zendy; Jixuan Wu | Zendy; Bo Liu | Zendy

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Multi-mode interferometer-based twist sensor with low temperature sensitivity employing square coreless fibers

Author(s) -

Binbin Song,

Yinping Miao,

Wei Lin,

Hao Zhang,

Jixuan Wu,

Bo Liu

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.026806

Subject(s) - optics , materials science , interferometry , multi mode optical fiber , fiber optic sensor , twist , single mode optical fiber , optical fiber , polarization maintaining optical fiber , graded index fiber , photonic crystal fiber , fusion splicing , dispersion shifted fiber , wavelength , sensitivity (control systems) , fiber , physics , electronic engineering , geometry , mathematics , composite material , engineering

An all-fiber twist sensor based on multimode interferometer (MMI) has been proposed and fabricated by splicing both ends of a section of square no-core fiber (NCF) with a single mode fiber. We have investigated the transmission spectral characteristics of the square fiber under different applied twisting angles. Within a torsion angle range of -360°~360°, the wavelength and transmission sensitivities are 1.28615 nm/(rad × m(-1)) and 0.11863%/ (rad × m(-1)), respectively. Moreover due to the trivial thermal expansion coefficient of pure silica fiber, the proposed twist sensor has a low temperature sensitivity, which is desirable to solve the temperature cross sensitivity.

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