| Presentation | 2021-10-14 [Poster Presentation] High-speed BOCDR with unlimited strain dynamic range Kazuya Kishizawa, Motoki Sano, Kohei Noda, 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) | Optical fiber sensors have been extensively studied as key tools for structural health monitoring because of their ease of handling and capability of distribution measurement. Among various methods that have been developed so far, we have been focusing on the performance improvement of Brillouin optical correlation-domain reflectometry (BOCDR), which is a single-end-access distributed strain and/or temperature sensing technique based on Brillouin scattering in optical fibers. In 2016, we succeeded in developing high-speed BOCDR configurations called phase-detected BOCDR and slope-assisted BOCDR, the sampling rate of which reached up to 100 kHz (world record). However, at the cost of the high-speed operation, these systems suffered from their deteriorated strain dynamic range of less than 0.2%. To overcome this issue, in this work, we implement a high-speed BOCDR with no limitation of strain dynamic range and demonstrate its basic operation. Subsequently, we show its improved signal-to-noise ratio by suppressing the noise peculiar to this experimental system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical fiber sensing / Brillouin scattering / Brillouin optical correlation-domain reflectometry (BOCDR) / high-speed operation |
| Paper # | OFT2021-21 |
| Date of Issue | 2021-10-07 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2021/10/14(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.) |
| Vice Chair | |
| Secretary | (NTT) |
| Assistant | Yukihiro Goto(NTT) / Minoru Takahashi(Fujikura) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] High-speed BOCDR with unlimited strain dynamic range |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber sensing |
| Keyword(2) | Brillouin scattering |
| Keyword(3) | Brillouin optical correlation-domain reflectometry (BOCDR) |
| Keyword(4) | high-speed operation |
| 1st Author's Name | Kazuya Kishizawa |
| 1st Author's Affiliation | Yokohama National University(YNU) |
| 2nd Author's Name | Motoki Sano |
| 2nd Author's Affiliation | Yokohama National University(YNU) |
| 3rd Author's Name | Kohei Noda |
| 3rd Author's Affiliation | Tokyo Institute of Technology/Yokohama National University(Tokyo Tech/YNU) |
| 4th Author's Name | Heeyoung Lee |
| 4th Author's Affiliation | Shibaura Institute of Technology(SIT) |
| 5th Author's Name | Kentaro Nakamura |
| 5th Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 6th Author's Name | Yosuke Mizuno |
| 6th Author's Affiliation | Yokohama National University(YNU) |
| Date | 2021-10-14 |
| Paper # | OFT2021-21 |
| Volume (vol) | vol.121 |
| Number (no) | OFT-199 |
| Page | pp.pp.1-4(OFT), |
| #Pages | 4 |
| Date of Issue | 2021-10-07 (OFT) |