| Presentation | 2019-02-15 Maximum and Minimum strain extraction from BGS observations including noise and optical loss using nonnegative 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) | We have proposed a method for extracting the maximum and minimum strains produced in a Brillouin gain spectrum (BGS) observation section centered at the position at which the BGS is observed, that is, the strain is measured, and demonstrated the availability of this method by simulations. In this method, those strains are analyzed by applying nonnegative matrix factorization (NMF) to the BGSs observed along the optical fiber. The Brillouin scattered light propagating along the optical fiber is attenuated by the loss of the optical fiber itself or the connection between fibers, and the BGS observed practically includes noise. In this report, the results of the maximum and minimum strain extraction simulations conducted by considering these factors are presented. The maximum and minimum strains extracted from BGSs without noise were not affected by the loss. In contrast, the strains extracted from BGSs with both the noise and optical loss fluctuated according to the signal to noise ratio. The fluctuation was reduced by conducting a smoothing processing to the BGSs as pre-processing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | optical fiber sensing / Brillouin gain spectrum / strain measurement / nonnegative matrix factorization |
| Paper # | OFT2018-81,OPE2018-210 |
| Date of Issue | 2019-02-07 (OFT, OPE) |
| Conference Information | |
| Committee | OFT / OCS / OPE |
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| Conference Date | 2019/2/14(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Fumihiko Ito(Shimane Univ.) / Itsuro Morita(KDDI Research) / Kouki Sato(Furukawa Electric Industries) |
| Vice Chair | / / Hiroshi Takahashi(Sophia Univ.) |
| Secretary | (Furukawa Electric) / (NTT) / Hiroshi Takahashi(NTT) |
| Assistant | Hiroshi Watanabe(NTT) / Masateru Tadakuma(Furukawa Electric) / / Yuya Shoji(Tokyo Inst. of Tech.) / Kazunori Seno(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology / Technical Committee on Optical Communication Systems / Technical Committee on OptoElectronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Maximum and Minimum strain extraction from BGS observations including noise and optical loss using nonnegative matrix factorization |
| Sub Title (in English) | |
| Keyword(1) | optical fiber sensing |
| Keyword(2) | Brillouin gain spectrum |
| Keyword(3) | strain measurement |
| Keyword(4) | nonnegative 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 | 2019-02-15 |
| Paper # | OFT2018-81,OPE2018-210 |
| Volume (vol) | vol.118 |
| Number (no) | OFT-444,OPE-445 |
| Page | pp.pp.57-62(OFT), pp.89-94(OPE), |
| #Pages | 6 |
| Date of Issue | 2019-02-07 (OFT, OPE) |