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Paper Abstract and Keywords
Presentation 2008-11-20 11:25
Brillouin optical correlation-domain reflectometry utilizing optical heterodyne detection
Yosuke Mizuno, Weiwen Zou, Zuyuan He, Kazuo Hotate (Univ. of Tokyo) OFT2008-53
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 along an optical fiber from a single end of the fiber, and obtained 13-mm spatial resolution and 50-Hz sampling rate. These resolution, which is directly related to the signal-to-noise (SN) ratio, and sampling rate were limited by the use of an electrical spectrum analyzer (ESA). In this paper, we examine the possibilities of improvements of the SN ratio and the sampling rate as well as a cost reduction with a new BOCDR system based on optical heterodyne detection that uses a single-sideband modulator and fast Fourier transform and contains no ESA. In the experiment, the SN ratio was not as good as that of the conventional BOCDR, but the sampling rate was enhanced to 400 Hz. In addition, noise inherent to this scheme was observed and discussed.
Keyword (in Japanese) (See Japanese page) 
(in English) optical fiber sensor / distributed strain measurement / Brillouin optical correlation-domain reflectometry / spontaneous Brillouin scattering / Rayleigh scattering / synthesis of optical coherence function / fast Fourier transform / BOCDR  
Reference Info. IEICE Tech. Rep., vol. 108, no. 310, OFT2008-53, pp. 33-38, Nov. 2008.
Paper # OFT2008-53 
Date of Issue 2008-11-13 (OFT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee OFT OCS ITE-BCT IEE-CMN  
Conference Date 2008-11-20 - 2008-11-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2008-11-OFT-OCS-BCT-CMN 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Brillouin optical correlation-domain reflectometry utilizing optical heterodyne detection 
Sub Title (in English)  
Keyword(1) optical fiber sensor  
Keyword(2) distributed strain measurement  
Keyword(3) Brillouin optical correlation-domain reflectometry  
Keyword(4) spontaneous Brillouin scattering  
Keyword(5) Rayleigh scattering  
Keyword(6) synthesis of optical coherence function  
Keyword(7) fast Fourier transform  
Keyword(8) BOCDR  
1st Author's Name Yosuke Mizuno  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Weiwen Zou  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
3rd Author's Name Zuyuan He  
3rd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
4th Author's Name Kazuo Hotate  
4th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2008-11-20 11:25:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2008-53 
Volume (vol) vol.108 
Number (no) no.310 
Page pp.33-38 
#Pages 6 
Date of Issue 2008-11-13 (OFT) 

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