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Proceedings Paper

Fiber optic refractive index sensor based on π-phase shifted fiber Bragg grating fabricated on etched side-hole fiber
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Paper Abstract

In this paper, we present a temperature-insensitive refractive index sensor based on π-phase-shifted Bragg gratings fabricated on side-hole fibers processed by wet chemical etching technique. The reflection spectrum of the π-phase shifted gratings on etched side-hole fiber features two notches with large spectral separation, which was used for refractive index (RI) detection in our application. The relative spectral notch separation exhibited a RI sensitivity of −278.5 pm/RIU (RIU: RI unit). Theoretical simulation obtained the temperature sensitivity of −0.00241 pm/°C, and experimental results also showed little sensitivity to temperature of our RI sensor.

Paper Details

Date Published: 29 May 2013
PDF: 6 pages
Proc. SPIE 8722, Fiber Optic Sensors and Applications X, 87220R (29 May 2013); doi: 10.1117/12.2018265
Show Author Affiliations
Qi Zhang, Univ. of Nebraska-Lincoln (United States)
Lingling Hu, Univ. of Nebraska-Lincoln (United States)
Jiajun Tian, Univ. of Nebraska-Lincoln (United States)
Natale J. Ianno, Univ. of Nebraska-Lincoln (United States)
Ming Han, Univ. of Nebraska-Lincoln (United States)

Published in SPIE Proceedings Vol. 8722:
Fiber Optic Sensors and Applications X
Eric Udd; Gary Pickrell; Henry H. Du; Jerry J. Benterou; Xudong Fan; Alexis Mendez; Stephen J. Mihailov; Anbo Wang; Hai Xiao, Editor(s)

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