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

Qi Zhang, Lingling Hu, Jiajun Tian, Natale J. Ianno, Ming Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

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-phaseshifted 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.

Original languageEnglish (US)
Title of host publicationFiber Optic Sensors and Applications X
DOIs
StatePublished - 2013
EventFiber Optic Sensors and Applications X - Baltimore, MD, United States
Duration: May 2 2013May 3 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8722
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceFiber Optic Sensors and Applications X
CountryUnited States
CityBaltimore, MD
Period5/2/135/3/13

Keywords

  • Fiber-optic sensor
  • Phase-shifted fiber Bragg grating
  • Refractive index measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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