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Title: Enhanced multiplexing capacity of low-coherence reflectometric sensors based on a loop topology
Authors: Yuan, L
Jin, W 
Zhou, L 
Hoo, YL
Demokan, S
Keywords: Fiber optic sensors
Low-coherence reflectometry
Quasi-distributed sensors
Strain sensors
Issue Date: 2002
Publisher: IEEE
Source: IEEE Sensors 2002 : proceedings of IEEE Sensors 2002 : first IEEE International Conference on Sensors, June 12-14, 2002, Hyatt Orlando, Orlando, Florida, U.S.A., p.1555-1560 How to cite?
Abstract: A novel scheme for enhancing the multiplexing capacity of low-coherence reflectometric sensors is demonstrated. The scheme is based on connecting the sensing elements in serial in a loop configuration, allowing each of the sensors within the array being interrogated twice from opposite directions. The bi-directional interrogation doubles the multiplexing capacity while maintains the signal to noise ratio. The double interrogation scheme would allow the normal operation of the sensor array even when one end of the transmission fiber were broken, improving the reliability of the sensing system for large-scale structural monitoring.
ISBN: 0-7803-7454-1
Rights: © 2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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