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Correlation-Based Continuous-Wave Technique for Optical Fiber Distributed Strain Measurement Using Brillouin Scattering with cm-Order Spatial Resolution--Applications to Smart Materials--

Kazuo HOTATE, Masato TANAKA

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Summary :

We summarize recent studies on performance improvement in the correlation-based continuous-wave technique for optical fiber distributed strain measurement using Brillouin scattering, that had been proposed previously. The correlation-based technique enables the spatial resolution of 1 cm, which is difficult for conventional sensing techniques using Brillouin scattering to achieve. Though the correlation-based technique left a problem with measurement range, we have proposed methods to overcome it with keeping high spatial resolution. In addition, we verified usefulness of the technique for smart materials by measuring strain distribution along surface of a ring structure.

Publication
IEICE TRANSACTIONS on Electronics Vol.E84-C No.12 pp.1823-1828
Publication Date
2001/12/01
Publicized
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Type of Manuscript
Special Section INVITED PAPER (Special Issue on New Technologies in Signal Processing for Electromagnetic-wave Sensing and Imaging)
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