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Optical Engineering

Terahertz-range interrogated grating-based two-axis optical fiber inclinometer
Author(s): Zhen Chen; Gerald Hefferman; Lei Yuan; Yang Song; Tao Wei
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Paper Abstract

We report a two-axis fiber inclinometer fabricated using an ultraweak terahertz-range fiber Bragg grating. Three sensing grating structures were inscribed along a single-mode optical fiber using a femtosecond laser, bound together into a sensing array using thermoformed plastic, and fixed to a two-axis rotational stage. Inclination tests were performed in which the fiber was deflected from 0 to 1.7 deg. These tests were repeated at eight azimuthal angles in increments of 45 deg (from 0 to 315 deg). The standard deviation of the largest inclination angle error was 0.048 deg and the stability of the inclination angle was 0.030 deg.

Paper Details

Date Published: 2 February 2016
PDF: 4 pages
Opt. Eng. 55(2) 026106 doi: 10.1117/1.OE.55.2.026106
Published in: Optical Engineering Volume 55, Issue 2
Show Author Affiliations
Zhen Chen, The Univ. of Rhode Island (United States)
Gerald Hefferman, The Univ. of Rhode Island (United States)
Brown Univ. (United States)
Lei Yuan, Clemson Univ. (United States)
Yang Song, Clemson Univ. (United States)
Tao Wei, The Univ. of Rhode Island (United States)

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