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| Presentation | 2022-10-13 09:30 [Poster Presentation] Extension of measurement range in OCDR based on double-modulation scheme Mana Sakamoto (YNU/SIT), Tomoya Miyamae (YNU), Kohei Noda (YNU/Tokyo Tech), Kentaro Nakamura (Tokyo Tech), Heeyoung Lee (SIT), Yosuke Mizuno (YNU)  OFT2022-20 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | For the past several decades, as a promising method for monitoring the soundness of optical fiber communication networks, distributed reflectivity sensing, which can measure the positions and reflectivities of poor connection points and other reflection points along optical fibers, has attracted considerable attention. Among various distributed reflectivity sensing techniques, we have been focusing on optical correlation-domain reflectometry (OCDR), which has random accessibility (high-speed measurement capability at any position along the sensing fiber), real-time operability, and cost efficiency (working with relatively inexpensive lasers). It is well known that Brillouin OCDR (BOCDR) for distributed strain and temperature sensing suffers from a trade-off relationship between spatial resolution and measurement range, and a double-modulation scheme was developed to mitigate this problem. In contrast, in OCDR, it was assumed that the spatial resolution is not affected by the measurement range. However, recently, it has been clarified both theoretically and experimentally that the spatial resolution of OCDR also suffers from a trade-off relationship with the measurement range. Thus, a technique for extending the measurement range while maintaining the spatial resolution of OCDR is important. In this work, we demonstrate that the measurement range of OCDR can also be extended while maintaining spatial resolution on the basis of the double-modulation scheme. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Optical fiber sensors / optical correlation-domain reflectometry (OCDR) / distributed reflectivity measurement / double-modulation scheme / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 210, OFT2022-20, pp. 9-12, Oct. 2022. | |
| Paper # | OFT2022-20 | |
| Date of Issue | 2022-10-06 (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) | |
| Download PDF | OFT2022-20 |
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| Conference Information | |
| Committee | OFT |
| Conference Date | 2022-10-13 - 2022-10-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kanagawa-Kenmin Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2022-10-OFT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Extension of measurement range in OCDR based on double-modulation scheme |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber sensors |
| Keyword(2) | optical correlation-domain reflectometry (OCDR) |
| Keyword(3) | distributed reflectivity measurement |
| Keyword(4) | double-modulation scheme |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Mana Sakamoto |
| 1st Author's Affiliation | Yokohama National University/Shibaura Institute of Technology (YNU/SIT) |
| 2nd Author's Name | Tomoya Miyamae |
| 2nd Author's Affiliation | Yokohama National University (YNU) |
| 3rd Author's Name | Kohei Noda |
| 3rd Author's Affiliation | Yokohama National University/Tokyo Institute of Technology (YNU/Tokyo Tech) |
| 4th Author's Name | Kentaro Nakamura |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 5th Author's Name | Heeyoung Lee |
| 5th Author's Affiliation | Shibaura Institute of Technology (SIT) |
| 6th Author's Name | Yosuke Mizuno |
| 6th Author's Affiliation | Yokohama National University (YNU) |
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| Speaker | Author-1 |
| Date Time | 2022-10-13 09:30:00 |
| Presentation Time | 70 minutes |
| Registration for | OFT |
| Paper # | OFT2022-20 |
| Volume (vol) | vol.122 |
| Number (no) | no.210 |
| Page | pp.9-12 |
| #Pages | 4 |
| Date of Issue | 2022-10-06 (OFT) |
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