Title :
A Novel Design of Fiber-Optic Sagnac Current Sensor
Author :
Hui Cao ; Nianbao Shi ; Jintao Xu
Author_Institution :
State Key Lab. of Transient Opt. & Photonics, Xi´an Inst. of Opt. & Precision Mech., Xi´an, China
Abstract :
The principle of in-line Sagnac interferometer current sensor is presented. To simplify the modulation and eliminate the error caused by cross coupling, a new structure of current sensor is proposed here. Two end mirrored sensing fibers are winded around the conductor reversely. The modulating is much simpler and a simple analysis using Jones matrix has shown that this current sensor is feasible.
Keywords :
Sagnac interferometers; electric sensing devices; fibre optic sensors; mirrors; Jones matrix; conductor winding; cross coupling; fiber-optic Sagnac current sensor; in-line Sagnac interferometer current sensor; modulation error elimination; two end mirrored sensing fiber; Modulation; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Optical interferometry; Sagnac interferometers; Jones matrix; current sensor; in-line Sagnac interferometer; modulation;
Conference_Titel :
Computational Intelligence and Design (ISCID), 2012 Fifth International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-2646-9
DOI :
10.1109/ISCID.2012.174
