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

Volume

15

Issue

7

fYear

2015

fDate

Jul-15

Firstpage

3917

Lastpage

3920

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;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2015.2404794

Filename

7044571