Expansion of spatial measurement range in a correlation based Brillouin optical sensing system

Title
Expansion of spatial measurement range in a correlation based Brillouin optical sensing system
Authors
정지호이관일정제명이상배
Keywords
fiber; laser; Brillouin; BOCDA; Stimulated Brillouin scattering; fiber optic sensor; Distributed sensor; strain monitoring
Issue Date
2011-05
Publisher
21st International Conference on Optical Fiber Sensors
Citation
VOL 7753, 77532A-1-77532A-4
Abstract
We propose a novel technique for expansion of spatial measurement range in a Brillouin optical correlation domain analysis (BOCDA) sensor system. Unlike conventional BOCDA, which has only a single correlation peak within the sensing fiber, the proposed scheme has multiple correlation peaks within the sensing section, and enables us to obtain selectively the physical information at a position corresponding to each correlation peak since the fiber under test consists of different kinds of fibers with different Brillouin frequency shifts. Using the proposed technique, we have successfully expanded a measurement range while maintaining the spatial resolution.
URI
http://pubs.kist.re.kr/handle/201004/40626
Appears in Collections:
KIST Publication > Conference Paper
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