| Presentation | 2004-10-15 Pulsed pre-pump method to achieve cm-order spatial resolution in Brillouin distributed measuring technique Kinzo KISHIDA, Che-Hien LI, Shengbin LIN, Ken'ichi NISHIGUCHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Distributed Brillouin scattering sensing that uses a pulse width down to Ins, which is one order of magnitude lower than currently available commercial BOTDA, was successfully examined in experiments by Bao et al. However, there are two problems in commercializing this technique: a) experimental settings must be changed each time the measurement is to be carried out on different objects, and b) the signal gets buried in the noise in long-range measurements. This paper introduces a method using a pre-pump pulse in front of a traditional laser pulse. Theoretical analysis of this new method shows that a cm-order distributed measurement can be realized that is free of fiber length. Accuracy of strain, distance limit, etc, are also quantitatively evaluated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | pre-pump / Brillouin band width / cm-order distributed measurement / phonon relaxation time |
| Paper # | OFT2004-48 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 2004/10/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optical Fiber Technology (OFT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Pulsed pre-pump method to achieve cm-order spatial resolution in Brillouin distributed measuring technique |
| Sub Title (in English) | |
| Keyword(1) | pre-pump |
| Keyword(2) | Brillouin band width |
| Keyword(3) | cm-order distributed measurement |
| Keyword(4) | phonon relaxation time |
| 1st Author's Name | Kinzo KISHIDA |
| 1st Author's Affiliation | Neubrex Co., Ltd() |
| 2nd Author's Name | Che-Hien LI |
| 2nd Author's Affiliation | Neubrex Co., Ltd |
| 3rd Author's Name | Shengbin LIN |
| 3rd Author's Affiliation | Neubrex Co., Ltd |
| 4th Author's Name | Ken'ichi NISHIGUCHI |
| 4th Author's Affiliation | Mitsubishi Electric Co. |
| Date | 2004-10-15 |
| Paper # | OFT2004-48 |
| Volume (vol) | vol.104 |
| Number (no) | 341 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |