INTERROGATION AND MULTIPLEXING SYSTEM FOR FIBER LOOP MIRROR COUPLED INTENSITY SENSORS USING OTDR
INTERROGATION AND MULTIPLEXING SYSTEM FOR FIBER LOOP MIRROR COUPLED INTENSITY SENSORS USING OTDR
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Date
2014
Authors
Rocco Giraldi,MTMR
Fernandes,CS
Marta Sofia Ferreira
de Sousa,MJ
Pedro Jorge
Costa,JCWA
José Luís Santos
Orlando Frazão
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Abstract
In this article, it is proposed an interrogation and multiplexing system based on optical time domain reflectometer for fiber loop mirror coupled intensity sensors. Pulse width of approximately 100 ns enabled to attain a dynamic range of approximately 18 dB. Good linearity was achieved with a -13.3 dB/mm slope. The resolution of the sensing head was 0.027 mm. The proposed interrogation system showed to be an alternative technique for multiplexing and remote sensing. (C) 2014 Wiley Periodicals, Inc.