Temperature-insensitive real-time inclinometer based on an etched fiber Bragg grating

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number6777570
Pages (from-to)1049-1052
Journal / PublicationIEEE Photonics Technology Letters
Issue number10
Publication statusPublished - 15 May 2014


We propose and experimentally demonstrate a compact temperature-insensitive inclinometer, which is constructed by connecting a chemically etched fiber Bragg grating to a hollow-core fiber filled with tin. The optical power reflected from the grating is linearly proportional to the inclination angle of the grating and can provide a real-time measure of the inclination angle. Our experimental sensor can measure the inclination angle from 0° to 20° with an uncertainty of ±0.35° and negligible temperature interference. © 2014 IEEE.

Research Area(s)

  • FBG, Fiber optics sensors, inclinometer