Paper Abstract and Keywords |
Presentation |
2022-10-13 10:50
[Poster Presentation]
Operation of BOCDR using low-cost light source Kouta Ozaki, Seiga Ochi (YNU), Kohei Noda (Tokyo Tech/YNU), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU) OFT2022-27 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Distributed optical fiber sensors for strain and temperature have been attracting considerable attention because of their measurement capability of aging deterioration and disaster-cased damages of civil infrastructures. Among various techniques, we are focusing on the performance improvement of Brillouin optical correlation-domain reflectometry (BOCDR), which is based on spontaneous Brillouin scattering in optical fibers. Conventionally, relatively expensive lasers with narrow linewidths of 1 MHz or less have been used in BOCDR, because wider laser linewidth will lead to wider Brillouin gain spectrum (BGS) observed using self-heterodyne detection, and the accuracy of strain/temperature detection is largely deteriorated. In this study, we investigate the possibility of utilizing cost-effective wider-linewidth light sources in BOCDR to reduce its implementation cost. Herein, as a first step, we evaluate the BGS shapes using lasers with different linewidths (full-length measurement). |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Optical fiber sensors / Brillouin scattering / Brillouin optical correlation-domain reflectometry (BOCDR) / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 122, no. 210, OFT2022-27, pp. 36-38, Oct. 2022. |
Paper # |
OFT2022-27 |
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 |
OFT2022-27 |
|