Title :
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
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;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2013.2288596
