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Novel Fiber-Optic Distributed Strain and Temperature Sensor with Very High Resolution
Yahei KOYAMADA Yousuke EDA Souichi HIROSE Shinki NAKAMURA Kazuo HOGARI
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.5
pp.1722-1725 Publication Date: 2006/05/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.5.1722 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Sensing Keyword: fiber-optic sensor, distributed sensor, strain sensor, temperature sensor, OTDR,
Full Text: PDF(203.1KB)>>
Summary:
A novel technique is proposed for measuring the distributed strain and temperature in a fiber with a very high resolution. This technique makes use of the jagged appearance of Rayleigh backscatter traces from a single-mode fiber measured by using a coherent OTDR with a precisely frequency-controlled light source. Our preliminary experiment indicated the possibility of measuring temperature with a resolution of better than 0.01 and a spatial resolution of one meter. This temperature resolution is two orders of magnitude better than that provided by Brillouin-based distributed sensors.
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