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Graphene enhanced phase sensitive D-type fiber optic sensor
Author(s): Yi Xu; L.-K. Ang
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Paper Abstract

A new D-type fiber optic sensor based on silicon/graphene hybrid structure is proposed. The refractive index variations are detected with phase difference changes instead of the conventional intensity and spectral variations. An ultrahigh phase sensitivity of 1:3716×106 deg=RIU (RIU: refractive index unit) was achieved, which is 3447- fold and 380-fold higher than that of fiber optic sensor without silicon/graphene coating, and with only silicon coating, respectively. This phase sensitivity enhancement factor is depending on the incident angle. The phase sensitivity decreases with the incident angle, height of fiber core, while increases with the length of sensing region.

Paper Details

Date Published: 15 November 2018
PDF: 6 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 1096467 (15 November 2018); doi: 10.1117/12.2506500
Show Author Affiliations
Yi Xu, Singapore Univ. of Technology and Design (Singapore)
L.-K. Ang, Singapore Univ. of Technology and Design (Singapore)

Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yue Yang, Editor(s)

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