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Paper Abstract and Keywords
Presentation 2021-10-14 10:30
[Poster Presentation] High-speed BOCDR with unlimited strain dynamic range
Kazuya Kishizawa, Motoki Sano (YNU), Kohei Noda (Tokyo Tech/YNU), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU) OFT2021-21
Abstract (in Japanese) (See Japanese page) 
(in English) Optical fiber sensors have been extensively studied as key tools for structural health monitoring because of their ease of handling and capability of distribution measurement. Among various methods that have been developed so far, we have been focusing on the performance improvement of Brillouin optical correlation-domain reflectometry (BOCDR), which is a single-end-access distributed strain and/or temperature sensing technique based on Brillouin scattering in optical fibers. In 2016, we succeeded in developing high-speed BOCDR configurations called phase-detected BOCDR and slope-assisted BOCDR, the sampling rate of which reached up to 100 kHz (world record). However, at the cost of the high-speed operation, these systems suffered from their deteriorated strain dynamic range of less than 0.2%. To overcome this issue, in this work, we implement a high-speed BOCDR with no limitation of strain dynamic range and demonstrate its basic operation. Subsequently, we show its improved signal-to-noise ratio by suppressing the noise peculiar to this experimental system.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical fiber sensing / Brillouin scattering / Brillouin optical correlation-domain reflectometry (BOCDR) / high-speed operation / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 199, OFT2021-21, pp. 1-4, Oct. 2021.
Paper # OFT2021-21 
Date of Issue 2021-10-07 (OFT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee OFT  
Conference Date 2021-10-14 - 2021-10-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2021-10-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High-speed BOCDR with unlimited strain dynamic range 
Sub Title (in English)  
Keyword(1) Optical fiber sensing  
Keyword(2) Brillouin scattering  
Keyword(3) Brillouin optical correlation-domain reflectometry (BOCDR)  
Keyword(4) high-speed operation  
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1st Author's Name Kazuya Kishizawa  
1st Author's Affiliation Yokohama National University (YNU)
2nd Author's Name Motoki Sano  
2nd Author's Affiliation Yokohama National University (YNU)
3rd Author's Name Kohei Noda  
3rd Author's Affiliation Tokyo Institute of Technology/Yokohama National University (Tokyo Tech/YNU)
4th Author's Name Heeyoung Lee  
4th Author's Affiliation Shibaura Institute of Technology (SIT)
5th Author's Name Kentaro Nakamura  
5th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
6th Author's Name Yosuke Mizuno  
6th Author's Affiliation Yokohama National University (YNU)
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Speaker Author-1 
Date Time 2021-10-14 10:30:00 
Presentation Time 80 minutes 
Registration for OFT 
Paper # OFT2021-21 
Volume (vol) vol.121 
Number (no) no.199 
Page pp.1-4 
#Pages 4 
Date of Issue 2021-10-07 (OFT) 

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