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Paper Abstract and Keywords
Presentation 2009-03-06 11:00
High-performance Brillouin distributed sensing using pulse compression technique
Ken'ichi Nishiguchi (Osaka Univ.), Li Che-Hsien, Kinzo Kishida (Neubrex) OFT2008-91 OPE2008-191 Link to ES Tech. Rep. Archives: OPE2008-191
Abstract (in Japanese) (See Japanese page) 
(in English) The spatial resolution of strain/temperature measurements using Brillouin scattering in an optical fiber is proportional to the pulse width of a pump laser light. However, because the phonon spectrum is broadened and the signal-to-noise ratio (SNR) decreases if the pulse width is narrowed to improve resolution, it degrades the measurement accuracy. In this report, we show that high spatial resolution with a long pulse can be realized by applying the pulse compression technique of high-resolution radar to the previously proposed pulse-prepump method and combining with a signal processing to cancel undesired components appeared in the spectrum. In principle, distributed measurement with an arbitrary resolution and an arbitrary SNR can be realized by the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Brillouin scattering / distributed sensing / strain/temperature sensing / prepump method / pulse compression / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 450, OFT2008-91, pp. 19-24, March 2009.
Paper # OFT2008-91 
Date of Issue 2009-02-27 (OFT, OPE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 OFT2008-91 OPE2008-191 Link to ES Tech. Rep. Archives: OPE2008-191

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 OFT 
Conference Code 2009-03-OFT-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High-performance Brillouin distributed sensing using pulse compression technique 
Sub Title (in English)  
Keyword(1) Brillouin scattering  
Keyword(2) distributed sensing  
Keyword(3) strain/temperature sensing  
Keyword(4) prepump method  
Keyword(5) pulse compression  
1st Author's Name Ken'ichi Nishiguchi  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Li Che-Hsien  
2nd Author's Affiliation Neubrex Co. Ltd (Neubrex)
3rd Author's Name Kinzo Kishida  
3rd Author's Affiliation Neubrex Co. Ltd (Neubrex)
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Date Time 2009-03-06 11:00:00 
Presentation Time 25 
Registration for OFT 
Paper # IEICE-OFT2008-91,IEICE-OPE2008-191 
Volume (vol) IEICE-108 
Number (no) no.450(OFT), no.451(OPE) 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-OFT-2009-02-27,IEICE-OPE-2009-02-27 

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