Title :
New interrogation technique for multiplexing LPG-fiber loop mirrors based displacement sensors using an OTDR
Author :
Bravo, M. ; López-Amo, M. ; Frazao, Orlando ; Baptista, J.M. ; Santos, J.L.
Author_Institution :
Dept. de Ing. Electr. y Electron., Univ. Publica de Navarra, Pamplona, Spain
Abstract :
A novel interrogation technique for multiplexing LPG-fiber loop mirrors has been proposed and experimentally demonstrated. Each displacement sensor is formed by a fiber loop mirror combined with a long period grating. This high reflectivity variable mirror is suitable to be interrogated by an OTDR and to be multiplexed in a crosstalk free setup with temperature independence.
Keywords :
diffraction gratings; displacement measurement; fibre optic sensors; mirrors; optical crosstalk; reflectivity; reflectometers; time-domain reflectometry; OTDR; crosstalk free setup; displacement sensors; interrogation technique; long-period gratings; multiplexing LPG-fiber loop mirrors; optical time-domain reflectometer; reflectivity variable mirror; Mirrors; Multiplexing; Optical fiber sensors; Optical fibers; Temperature sensors;
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
Print_ISBN :
978-1-4244-9290-9
DOI :
10.1109/ICSENS.2011.6126990
