Highly sensitive in-fiber interferometric refractometer with temperature and axial strain compensation | Zendy

Jérémie Harris | Zendy; Ping Lü | Zendy; Hugo Larocque | Zendy; Yanping Xu | Zendy; Liang Chen | Zendy; Xiaoyi Bao | Zendy

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Highly sensitive in-fiber interferometric refractometer with temperature and axial strain compensation

Author(s) -

Jérémie Harris,

Ping Lü,

Hugo Larocque,

Yanping Xu,

Liang Chen,

Xiaoyi Bao

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.21.009996

Subject(s) - optics , refractometer , interferometry , materials science , refractive index , cladding (metalworking) , optical fiber , wavelength , fiber optic sensor , graded index fiber , physics , metallurgy

A novel fiber-optic refractometer is proposed and demonstrated to achieve temperature- and axial strain-compensated refractive index measurement using highly sensitive outer-cladding modes in a tapered bend-insensitive fiber based Mach-Zehnder interferometer. Peak wavelength shifts associated with different spatial frequency peaks are calibrated to obtain a wavelength-related character matrix (λ)M(RI,T,ε) for simultaneous measurement of multiple environmental variables. A phase-related character matrix (Φ)M(RI,T,ε) is also acquired by direct determination of refractive index, temperature, and axial strain induced phase shifts of the corresponding sensing modes.

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