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Paper Abstract and Keywords
Presentation 2019-02-15 14:25
Maximum and Minimum strain extraction from BGS observations including noise and optical loss using nonnegative matrix factorization
Takuya Fujimoto, Hiroshi Naruse (Mie Univ.), Takanori Nishino (Meijo Univ.)
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) optical fiber sensing / Brillouin gain spectrum / strain measurement / nonnegative matrix factorization / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 444, OFT2018-81, pp. 57-62, Feb. 2019.
Paper # OFT2018-81 
Date of Issue 2019-02-07 (OFT, OPE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee OFT OCS OPE  
Conference Date 2019-02-14 - 2019-02-15 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To OFT 
Conference Code 2019-02-OFT-OCS-OPE 
Language Japanese 
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.)
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Date Time 2019-02-15 14:25:00 
Presentation Time 25 
Registration for OFT 
Paper # IEICE-OFT2018-81,IEICE-OPE2018-210 
Volume (vol) IEICE-118 
Number (no) no.444(OFT), no.445(OPE) 
Page pp.57-62(OFT), pp.89-94(OPE) 
#Pages IEICE-6 
Date of Issue IEICE-OFT-2019-02-07,IEICE-OPE-2019-02-07 

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