Brillouin optical correlation domain analysis with more than 1 million effective sensing points based on differential measurement

Title
Brillouin optical correlation domain analysis with more than 1 million effective sensing points based on differential measurement
Authors
이관일김용현송광용
Issue Date
2015-12
Publisher
Optics express
Citation
VOL 23, NO 26-33248
Abstract
Large increase of effective sensing points in Brillouin optical correlation domain analysis (BOCDA) is achieved by simultaneously applying double modulation and optical time gate based on differential measurement scheme. The noise substructure of Brillouin gain spectrum induced by the double modulation is effectively suppressed by the differential measurement, leading to 2,000 times enlargement of the measurement range. Distributed strain and temperature sensing along a 10.5 km fiber with spatial resolution of less than 1 cm is experimentally demonstrated which corresponds to over 1 million effective sensing points. (C) 2015 Optical Society of America
URI
http://pubs.kist.re.kr/handle/201004/64770
ISSN
1094-4087
Appears in Collections:
KIST Publication > Article
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