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| Presentation | 2009-03-06 13:30 Stable entire-length measurement of fiber strain distribution by Brillouin optical correlation-domain reflectometry with polarization scrambling Yosuke Mizuno, Zuyuan He, Kazuo Hotate (Univ. of Tokyo)  OFT2008-93 OPE2008-193 Link to ES Tech. Rep. Archives: OPE2008-193 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently we have proposed a Brillouin optical correlation-domain reflectometry (BOCDR) to measure the distribution of strain and/or temperature along an optical fiber from a single end, and obtained 13-mm spatial resolution and 50-Hz sampling rate simultaneously. However, since the measured Brillouin gain spectrum (BGS) in BOCDR was sensitive to the state of polarization (SOP), frequent SOP optimization by manually adjusting polarization controllers was needed for a distributed strain/temperature measurement along a long fiber. In this paper, we realize a stable high-speed entire-length measurement of strain distribution by suppressing the BGS fluctuation automatically based on a polarization scrambling scheme. In the experiment, strain distribution along the entire length of a 100-m fiber was successfully measured with 40-cm spatial resolution and 19-Hz sampling rate. We also demonstrate an S/N ratio improvement based on noise-floor compensation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | BOCDR / Brillouin scattering / coherence function / distributed strain sensor / fiber-optic sensing / modulation / SN ratio / polarization | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 451, OPE2008-193, pp. 31-38, March 2009. | |
| Paper # | OPE2008-193 | |
| Date of Issue | 2009-02-27 (OFT, OPE) | |
| ISSN | Print edition: ISSN 0913-5685 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 | OFT2008-93 OPE2008-193 Link to ES Tech. Rep. Archives: OPE2008-193 |
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| Conference Information | |
| Committee | OFT OPE |
| Conference Date | 2009-03-06 - 2009-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OPE |
| Conference Code | 2009-03-OFT-OPE |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Stable entire-length measurement of fiber strain distribution by Brillouin optical correlation-domain reflectometry with polarization scrambling |
| Sub Title (in English) | |
| Keyword(1) | BOCDR |
| Keyword(2) | Brillouin scattering |
| Keyword(3) | coherence function |
| Keyword(4) | distributed strain sensor |
| Keyword(5) | fiber-optic sensing |
| Keyword(6) | modulation |
| Keyword(7) | SN ratio |
| Keyword(8) | polarization |
| 1st Author's Name | Yosuke Mizuno |
| 1st Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
| 2nd Author's Name | Zuyuan He |
| 2nd Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
| 3rd Author's Name | Kazuo Hotate |
| 3rd Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2009-03-06 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | OPE |
| Paper # | OFT2008-93, OPE2008-193 |
| Volume (vol) | vol.108 |
| Number (no) | no.450(OFT), no.451(OPE) |
| Page | pp.31-38 |
| #Pages | 8 |
| Date of Issue | 2009-02-27 (OFT, OPE) |
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