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Paper Abstract and Keywords
Presentation 2019-02-15 14:00
Measurement of Ring Circumferential Strain with Actually Observed Brillouin Gain Spectra
Kento Nishimura, Shusuke Narieda, Hiroshi Naruse (Mie Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) A ring circumferential strain measurement method using a model of Brillouin gain spectrum (BGS) has been proposed. In this method, the BGS model is fitted to BGSs observed in an optical fiber installed around a ring. In addition, the characteristics of the strain measurement error with respect to BGS-observation and load conditions have been clarified by simulations. This report describes experiments that we conducted to investigate the availability of this method. In these experiments, BGSs were observed in optical fibers undergoing strains produced the ring under concentrated and distributed loads, and strains were obtained from these BGSs. Instead of the spatially varying strains formed in the ring by these loads, the temporally varying strains equivalent to those strains, namely, deforming the BGSs in analogy with the spatial strains were formed in the optical fiber, and the BGSs were observed. The errors of the strains measured under both loads were 2% of the difference between the maximum and minimum strains, that is, the distribution range of the strain formed in the ring. This result indicates that this method is effective in the observed BGSs.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Fiber Sensing / Brillouin Gain Spectrum / Ring / Experiment / Strain Measurement / Error / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 444, OFT2018-80, pp. 53-56, Feb. 2019.
Paper # OFT2018-80 
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) Measurement of Ring Circumferential Strain with Actually Observed Brillouin Gain Spectra 
Sub Title (in English)  
Keyword(1) Optical Fiber Sensing  
Keyword(2) Brillouin Gain Spectrum  
Keyword(3) Ring  
Keyword(4) Experiment  
Keyword(5) Strain Measurement  
Keyword(6) Error  
1st Author's Name Kento Nishimura  
1st Author's Affiliation Mie University (Mie Univ.)
2nd Author's Name Shusuke Narieda  
2nd Author's Affiliation Mie University (Mie Univ.)
3rd Author's Name Hiroshi Naruse  
3rd Author's Affiliation Mie University (Mie Univ.)
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Date Time 2019-02-15 14:00:00 
Presentation Time 25 
Registration for OFT 
Paper # IEICE-OFT2018-80,IEICE-OPE2018-209 
Volume (vol) IEICE-118 
Number (no) no.444(OFT), no.445(OPE) 
Page pp.53-56(OFT), pp.85-88(OPE) 
#Pages IEICE-4 
Date of Issue IEICE-OFT-2019-02-07,IEICE-OPE-2019-02-07 

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