| Presentation | 2015-08-28 Fabrication of Fiber-Optic Distributed Acoustic Sensor and Its Signal Processing Ken'ichi Nishiguchi, Li Che-Hsien, Artur Guzik, Mitsunori Yokoyama, Kinzo Kishida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We fabricated a fiber-optic distributed acoustic sensing (DAS) system using a narrow linewidth laser. DAS systems are classified to intensity-based and phase-based ones. The present system adopts phase and polarization diversity, and has four output signal channels so as to test both intensity- and phase-based methods. Moreover, we newly introduced Kalman filter phase unwrapping algorithm to signal processing of the phase-based method. Both methods were compared experimentally using a test fiber. It was confirmed that the phase-based method was superior to the intensity-based one because the former could detect acoustic signals in each position of the fiber while the latter could not in some positions since the intensity of the Rayleigh scattering changed randomly in the fiber. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Rayleigh scattering / fiber-optic sensing / distributed acoustic sensing / Kalman filter |
| Paper # | OFT2015-21 |
| Date of Issue | 2015-08-20 (OFT) |
| Conference Information | |
| Committee | OFT / OCS |
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| Conference Date | 2015/8/27(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroshi Naruse(Mie Univ.) / Kiyoshi Fukuchi(NEC) |
| Vice Chair | / Akira Hirano(NTT) |
| Secretary | (NTT) / Akira Hirano(Fujikura) |
| Assistant | Terutake Kobayashi(Fujikura) / Hidenobu Hirota(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology / Technical Committee on Optical Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fabrication of Fiber-Optic Distributed Acoustic Sensor and Its Signal Processing |
| Sub Title (in English) | |
| Keyword(1) | Rayleigh scattering |
| Keyword(2) | fiber-optic sensing |
| Keyword(3) | distributed acoustic sensing |
| Keyword(4) | Kalman filter |
| 1st Author's Name | Ken'ichi Nishiguchi |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Li Che-Hsien |
| 2nd Author's Affiliation | Neubrex Co., Ltd(Neubrex) |
| 3rd Author's Name | Artur Guzik |
| 3rd Author's Affiliation | Neubrex Co., Ltd(Neubrex) |
| 4th Author's Name | Mitsunori Yokoyama |
| 4th Author's Affiliation | Neubrex Co., Ltd(Neubrex) |
| 5th Author's Name | Kinzo Kishida |
| 5th Author's Affiliation | Neubrex Co., Ltd(Neubrex) |
| Date | 2015-08-28 |
| Paper # | OFT2015-21 |
| Volume (vol) | vol.115 |
| Number (no) | OFT-202 |
| Page | pp.pp.29-34(OFT), |
| #Pages | 6 |
| Date of Issue | 2015-08-20 (OFT) |