Terahertz-range interrogated grating-based two-axis optical fiber inclinometer

被引：10
|
作者：
Chen, Zhen [1 ]
Hefferman, Gerald [1 ,2 ]
Yuan, Lei [3 ]
Song, Yang [3 ]
Wei, Tao [1 ]
机构：
[1] Univ Rhode Isl, Dept Elect Comp & Biomed Engn, Kelley Annex A-220,4 East Alumni Ave, Kingston, RI 02881 USA
[2] Brown Univ, Warren Alpert Med Sch, 222 Richmond St, Providence, RI 02903 USA
[3] Clemson Univ, Dept Elect & Comp Engn, Room 147,AMRL Bldg,91 Technol Dr, Anderson, SC 29625 USA
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 02期
基金：
美国国家科学基金会;
关键词：
optical fiber sensor; fiber gratings; FREQUENCY-DOMAIN REFLECTOMETRY; SINGLE-MODE FIBER; FEMTOSECOND LASER;
D O I：
10.1117/1.OE.55.2.026106
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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收藏
页数：4
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