| Presentation | 2020-11-12 [Invited Talk] Recent trends of slope-assisted BOCDR Heeyoung Lee, Kentaro Nakamura, Yosuke Mizuno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Brillouin optical correlation-domain reflectometry (BOCDR) is one of the fiber-optic Brillouin-based distributed sensing techniques for strain and temperature with single-end accessibility. Since the first proposal of the basic concept in 2008, the performance of BOCDR has been drastically improved from a variety of aspects including high-speed operation. Here, we focus on one of the high-speed BOCDR configurations referred to as slope-assisted (SA-) BOCDR. In this configuration, instead of observing the whole Brillouin gain spectrum, only the spectral power at a certain frequency on the spectrum is detected, leading to frequency-sweep-free high-speed operation and some unique features. In this paper, we describe the basic principle of SA-BOCDR and its unique feature called beyond-nominal resolution effect. Then we present an example of SA-BOCDR-based structural diagnosis using composite structure comprising carbon fiber reinforced plastics. We also discuss the current issues of SA-BOCDR and present a concluding remark. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical fiber sensorsBrillouin scatteringdistributed strain measurementsstructural health monitoringcarbon fiber reinforced plastics (CFRPs) |
| Paper # | OFT2020-37 |
| Date of Issue | 2020-11-05 (OFT) |
| Conference Information | |
| Committee | OFT / ITE-BCT / OCS / IEE-CMN |
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| Conference Date | 2020/11/12(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuji Matsuura(Tohoku Univ.) / / Joji Maeda(Tokyo Univ. of Science) / Shun Morimura(CRIEPI) |
| Vice Chair | / / / Kouji Hirata(Kansai Univ) |
| Secretary | (NTT) / (Sumitomo Electric) / / Kouji Hirata(NTT) |
| Assistant | Hajime Arao(Sumitomo Electric) / Yukihiro Goto(NTT) / / / Yuuichi Shinohara(TEPCO Power Grid) / Akihiro Tanaka(CRIEPI) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology / Technical Group on Broadcasting Technology / Technical Committee on Optical Communication Systems / Technical Meeting on Communications |
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| Language | ENG-JTITLE |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] Recent trends of slope-assisted BOCDR |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber sensorsBrillouin scatteringdistributed strain measurementsstructural health monitoringcarbon fiber reinforced plastics (CFRPs) |
| 1st Author's Name | Heeyoung Lee |
| 1st Author's Affiliation | Shibaura Institute of Technology(SIT) |
| 2nd Author's Name | Kentaro Nakamura |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 3rd Author's Name | Yosuke Mizuno |
| 3rd Author's Affiliation | Yokohama National University(YNU) |
| Date | 2020-11-12 |
| Paper # | OFT2020-37 |
| Volume (vol) | vol.120 |
| Number (no) | OFT-230 |
| Page | pp.pp.1-6(OFT), |
| #Pages | 6 |
| Date of Issue | 2020-11-05 (OFT) |