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Paper Abstract and Keywords
Presentation 2021-02-19 13:55
Application of distributed vibration sensing based on frequency-division-multiplex phase OTDR to monitoring an installed aerial optical fiber cable state
Yoshifumi Wakisaka, Daisuke Iida, Tatsuya Okamoto, Yusuke Koshikiya, Nazuki Honda (NTT) OFT2020-69 OPE2020-90
Abstract (in Japanese) (See Japanese page) 
(in English) Researches on distributed vibration sensing (DVS) to closely visualize optical fiber cable states have been developed for various applications including traffic monitoring, structural health monitoring, detection of natural disasters such as earthquakes and gales. Among DVS techniques, Phase-OTDR can detect vibrations quantitatively and highly sensitively. Problems such as phase unwrapping failures and fading have been alleviated by some techniques. These include the frequency-division-multiplexing (FDM) technique developed by our group. Field trials outside laboratories have also been increased for practical uses. However, the number of trials using a communication optical fiber cable as a sensor to monitor communication facilities are still very small. This paper describes the recent progresses in FDM techniques first. Then, this paper shows the monitoring results of an aerially installed cable on telephone poles outside a building, which experienced natural winds.
Keyword (in Japanese) (See Japanese page) 
(in English) distributed vibration sensing / phase-OTDR / frequency-division-multiplex / aerially installed cable / maintenance / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 369, OFT2020-69, pp. 62-65, Feb. 2021.
Paper # OFT2020-69 
Date of Issue 2021-02-11 (OFT, OPE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
Download PDF OFT2020-69 OPE2020-90

Conference Information
Committee OPE OCS OFT  
Conference Date 2021-02-18 - 2021-02-19 
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 2021-02-OPE-OCS-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Application of distributed vibration sensing based on frequency-division-multiplex phase OTDR to monitoring an installed aerial optical fiber cable state 
Sub Title (in English)  
Keyword(1) distributed vibration sensing  
Keyword(2) phase-OTDR  
Keyword(3) frequency-division-multiplex  
Keyword(4) aerially installed cable  
Keyword(5) maintenance  
1st Author's Name Yoshifumi Wakisaka  
1st Author's Affiliation NTT Corporation (NTT)
2nd Author's Name Daisuke Iida  
2nd Author's Affiliation NTT Corporation (NTT)
3rd Author's Name Tatsuya Okamoto  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Yusuke Koshikiya  
4th Author's Affiliation NTT Corporation (NTT)
5th Author's Name Nazuki Honda  
5th Author's Affiliation NTT Corporation (NTT)
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Date Time 2021-02-19 13:55:00 
Presentation Time 25 
Registration for OFT 
Paper # OFT2020-69, OPE2020-90 
Volume (vol) 120 
Number (no) no.369(OFT), no.370(OPE) 
Page pp.62-65(OFT), pp.67-70(OPE) 
Date of Issue 2021-02-11 (OFT, OPE) 

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