Micro-Displacement Sensor Combined With a Fiber Ring Interrogated by an Optical Time-Domain Reflectometer

Author

Bravo, Mikel ; Baptista, Jose Manuel ; Santos, Jose Luis ; Lopez-Amo, Manuel ; Frazao, Orlando

Author_Institution

Dept. de Ing. Electr. y Electron., Univ. Publica de Navarra, Pamplona, Spain

Volume

14

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

793

Lastpage

796

Abstract

A micro-displacement sensing head based on two aligned cleaved fibers inserted into an optical fiber ring and interrogated by an optical time-domain reflectometry is presented. The sensor configuration is characterized for measuring both longitudinal and axial micro-displacements, showing a sensitivity of 0.07 and 2.67 dB/μm for longitudinal and axial micro-displacements, respectively. A multiplexing system using two of these configurations is also studied.

Keywords

displacement measurement; fibre optic sensors; multiplexing equipment; optical fibre communication; optical time-domain reflectometry; aligned cleaved fibers; axial microdisplacement; longitudinal microdisplacement; microdisplacement sensing head; microdisplacement sensor; multiplexing system; optical fiber ring; optical time-domain reflectometer; sensor configuration; Multiplexing; Optical fiber networks; Optical fiber sensors; Optical fibers; Fiber ring; OTDR; air-gap; displacement sensor;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2013.2288596

Filename

6655895