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| Presentation | 2022-10-13 10:50 [Poster Presentation] Observation and suppression of temperature-dependent spectral power change in multimode FBG Kazuya Kishizawa (YNU), Kohei Noda (YNU/Tokyo Tech), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU)  OFT2022-24 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Optical fiber sensors have been extensively studied as a promising alternative for electrical sensors because of their ease of handling and no power supply required. Among various types of optical fiber sensors, fiber Bragg gratings (FBGs) have been extensively used for single-point and multi-point measurements. FBGs are mostly inscribed in single-mode fibers, but it is feasible to inscribe FBGs in multimode fibers Multimode FBGs are resistant to bending and can measure multiple physical quantities in a discriminative manner. However, when the temperature dependence of the dip in the transmitted spectrum is measured using a simple experimental setup, significant fluctuations of its spectral power are observed. In this study, we find that the temperature-dependent spectral power fluctuations in multimode FBGs are caused by modal interference in the multimode fiber. We also experimentally show that the power fluctuations can be suppressed by using the peak of the reflected spectrum instead of the dip of the transmitted spectrum. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Optical fiber sensors / fiber Bragg gratings / multimode fibers / modal interference / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 210, OFT2022-24, pp. 25-28, Oct. 2022. | |
| Paper # | OFT2022-24 | |
| 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 | OFT2022-24 |
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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) | Observation and suppression of temperature-dependent spectral power change in multimode FBG |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber sensors |
| Keyword(2) | fiber Bragg gratings |
| Keyword(3) | multimode fibers |
| Keyword(4) | modal interference |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Kazuya Kishizawa |
| 1st Author's Affiliation | Yokohama National University (YNU) |
| 2nd Author's Name | Kohei Noda |
| 2nd Author's Affiliation | Yokohama National University/Tokyo Institute of Technology (YNU/Tokyo Tech) |
| 3rd Author's Name | Heeyoung Lee |
| 3rd Author's Affiliation | Shibaura Institute of Technology (SIT) |
| 4th Author's Name | Kentaro Nakamura |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 5th Author's Name | Yosuke Mizuno |
| 5th Author's Affiliation | Yokohama National University (YNU) |
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| Speaker | Author-1 |
| Date Time | 2022-10-13 10:50:00 |
| Presentation Time | 70 minutes |
| Registration for | OFT |
| Paper # | OFT2022-24 |
| Volume (vol) | vol.122 |
| Number (no) | no.210 |
| Page | pp.25-28 |
| #Pages | 4 |
| Date of Issue | 2022-10-06 (OFT) |
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