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Analyzing the applicability of side-polished fiber Bragg grating tilt sensor using liquid pendulum with controllable angle

  • Beihang University
  • Wuhan University
  • Shenzhen University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We developed a simple and novel liquid pendulum-based side-polished fiber Bragg grating (FBG) tilt sensor. Sucrose solution of ∼36 ml with a refractive index (RI) of 1.435 was dispensed into a plexiglass container preprocessed by hydrophobic agent, where the side-polished FBG with a D-shaped polished zone of ∼54 μm depth and ∼15 mm length was attached on the side wall. The liquid level changes caused initial angle-dependent evanescent field interaction with fiber gratings surrounded by the liquid and air, therefore resulting in a wavelength shift of single or dual Bragg peaks related to the effective RI of polished FBG. The sensor exhibited a tilt-induced sensitivity of 131 pm relative to tangent of angle with a linearity of 5.4% in a range of 15° with a controllable lower-limit angle.

Original languageEnglish
Title of host publicationIEEE SENSORS 2017 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-3
Number of pages3
ISBN (Electronic)9781509010127
DOIs
StatePublished - 21 Dec 2017
Event16th IEEE SENSORS Conference, ICSENS 2017 - Glasgow, United Kingdom
Duration: 30 Oct 20171 Nov 2017

Publication series

NameProceedings of IEEE Sensors
Volume2017-December
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229

Conference

Conference16th IEEE SENSORS Conference, ICSENS 2017
Country/TerritoryUnited Kingdom
CityGlasgow
Period30/10/171/11/17

Keywords

  • controllable initial angle
  • fiber Bragg grating
  • refractive index
  • side-polished fiber
  • tilt angle sensor

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