Simultaneous temperature and vibration monitoring using an all-PM fiber loop mirror interferometer
Fecha
2017Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1117/12.2263076
Resumen
In this work, an all-polarization maintaining fiber loop mirror interferometer is presented and validated as vibration and temperature sensor without crosstalk between measurands. The system is entirely built using polarization-maintaining (PM) fiber and a PM optical coupler. As a consequence, no polarization controllers are needed in the cavity, significantly simplifying the operation of the sys ...
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In this work, an all-polarization maintaining fiber loop mirror interferometer is presented and validated as vibration and temperature sensor without crosstalk between measurands. The system is entirely built using polarization-maintaining (PM) fiber and a PM optical coupler. As a consequence, no polarization controllers are needed in the cavity, significantly simplifying the operation of the system and improving the stability and accuracy of the measurements. The loop comprises three PM fiber sections appropriately fused with an angle offset between them. In this manner, the interference is maximized and the sensing contributions of the two PM fibers used as communications channels are suppressed. The third PM fiber is used as the sensor itself, simultaneously monitoring temperature and mechanical vibration up to 1.2 kHz by means of an interrogation technique based on fast Fourier transform. [--]
Materias
Fiber loop mirror (FLM),
Polarization-maintaining fiber,
Sagnac interferometer,
Photonic crystal fiber (PCF)
Editor
SPIE
Publicado en
25th International Conference on Optical Fiber Sensors, edited by Youngjoo Chung… [et al.], Proc. of SPIE Vol. 10323, 103235V
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
Financial support from the Spanish Comisión Interministerial de Ciencia y Tecnología within projects TEC2013-47264-
C2-2-R and TEC2016-76021-C2-1-R.