Title :
Optical Fiber Inclinometer Based on a Fiber Taper Cascading a Peanut-Shape Structure
Author :
Huaping Gong ; Ziheng Qian ; Xiao Yang ; Chun-Liu Zhao ; Xinyong Dong
Author_Institution :
Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China
Abstract :
An optical fiber inclinometer applying modal interference based on an abrupt tapering cascading a peanut-shape configuration is proposed. The abrupt taper splits part of the core mode into cladding modes and the interference occurs when the peanut-shape recombines the cladding modes and core mode together. Four inclinometers with different lengths have been fabricated and characterized, and the high sensitivities of -1.76 and -4.49 nm/° are obtained in the angle range of 0°-3° and 3°-6.66°, respectively.
Keywords :
angular measurement; fibre optic sensors; light interference; modal analysis; optical fibre cladding; optical fibre fabrication; cladding mode; core mode; fiber taper cascading; modal interference; optical fiber inclinometer; peanut-shape structure; Bragg gratings; Optical fiber sensors; Optical fibers; Sensitivity; Temperature measurement; Temperature sensors; Optical fiber inclinometer; fiber tapering; modal interferometer; peanut-shape;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2015.2404794
