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      Distributed strain measurement with millimeter-order spatial resolution based on Brillouin optical correlation domain analysis.

      1 , ,

      Optics letters

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          Abstract

          Distributed strain sensing with millimeter-order spatial resolution is demonstrated in optical fibers based on Brillouin optical correlation domain analysis. A novel beat lock-in detection scheme is introduced to suppress background noises coming from the reflection of Brillouin pump waves. The Brillouin frequency shifts of 3 mm fiber sections are successfully measured with a theoretical spatial resolution of 1.6 mm.

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          Author and article information

          Journal
          Opt Lett
          Optics letters
          0146-9592
          0146-9592
          Sep 01 2006
          : 31
          : 17
          Affiliations
          [1 ] Department of Electronic Engineering, Unviersity of Tokyo, Tokyo, Japan. songky@kaist.ac.kr
          Article
          96903
          16902607

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