| Presentation | 2018-01-19 Noise reduction of Brillouin gain spectrum using non-negative matrix factorization Takuya Fujimoto, Hiroshi Naruse, Takanori Nishino, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In strain and temperature measurements using the Brillouin gain spectrum (BGS) produced in an optical fiber, the reduction of the noise in the observed BGS is important to improve the measurement performance. The BGS has non-negative value and can be approximated by the superposition of Lorentz-shaped spectra (LSs) with the frequency shift corresponding to the strain or temperature. Noticing these BGS characteristics, we proposed a novel BGS noise reduction method. In the method, the observed BGS is factorized into the basis matrix consisting of LSs and the optimum coefficient matrix is determined. The noise-reduced BGS is reconstructed by their product. Through simulations, the effectiveness of this method is confirmed and the relationship between the frequency interval of LSs used for the basis matrix and the noise reduction, is discussed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical-fiber sensing / Brillouin gain spectrum / noise reduction / non-negative matrix factorization |
| Paper # | OFT2017-64 |
| Date of Issue | 2018-01-11 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2018/1/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Masayuki Shigematsu(Sumitomo Electric Industries) |
| Vice Chair | |
| Secretary | (Sumitomo Electric Industries) |
| Assistant | Hiroshi Watanabe(NTT) / Masateru Tadakuma(Furukawa Electric Industries) |
| 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) | Noise reduction of Brillouin gain spectrum using non-negative matrix factorization |
| Sub Title (in English) | |
| Keyword(1) | Optical-fiber sensing |
| Keyword(2) | Brillouin gain spectrum |
| Keyword(3) | noise reduction |
| Keyword(4) | non-negative matrix factorization |
| 1st Author's Name | Takuya Fujimoto |
| 1st Author's Affiliation | Mie University(Mie Univ.) |
| 2nd Author's Name | Hiroshi Naruse |
| 2nd Author's Affiliation | Mie University(Mie Univ.) |
| 3rd Author's Name | Takanori Nishino |
| 3rd Author's Affiliation | Meijo University(Meijo Univ.) |
| Date | 2018-01-19 |
| Paper # | OFT2017-64 |
| Volume (vol) | vol.117 |
| Number (no) | OFT-387 |
| Page | pp.pp.37-41(OFT), |
| #Pages | 5 |
| Date of Issue | 2018-01-11 (OFT) |