| Presentation | 2009-03-06 High-performance Brillouin distributed sensing using pulse compression technique Ken'ichi NISHIGUCHI, CHE-HSIEN LI, Kinzo KISHIDA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The spatial resolution of strain/temperature measurements using Brillouin scattering in an optical fiber is proportional to the pulse width of a pump laser light. However, because the phonon spectrum is broadened and the signal-to-noise ratio (SNR) decreases if the pulse width is narrowed to improve resolution, it degrades the measurement accuracy. In this report, we show that high spatial resolution with a long pulse can be realized by applying the pulse compression technique of high-resolution radar to the previously proposed pulse-prepump method and combining with a signal processing to cancel undesired components appeared in the spectrum. In principle, distributed measurement with an arbitrary resolution and an arbitrary SNR can be realized by the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Brillouin scattering / distributed sensing / strain/temperature sensing / prepump method / pulse compression |
| Paper # | OFT2008-91,OPE2008-191 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 2009/2/27(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) | High-performance Brillouin distributed sensing using pulse compression technique |
| Sub Title (in English) | |
| Keyword(1) | Brillouin scattering |
| Keyword(2) | distributed sensing |
| Keyword(3) | strain/temperature sensing |
| Keyword(4) | prepump method |
| Keyword(5) | pulse compression |
| 1st Author's Name | Ken'ichi NISHIGUCHI |
| 1st Author's Affiliation | Frontier Research Center, Osaka University() |
| 2nd Author's Name | CHE-HSIEN LI |
| 2nd Author's Affiliation | Neubrex Co., Ltd. |
| 3rd Author's Name | Kinzo KISHIDA |
| 3rd Author's Affiliation | Neubrex Co., Ltd. |
| Date | 2009-03-06 |
| Paper # | OFT2008-91,OPE2008-191 |
| Volume (vol) | vol.108 |
| Number (no) | 450 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |