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Paper Abstract and Keywords
Presentation 2008-08-28 11:50
Proposal of Displacement Sensing by Delayed Transmission/Reflection Ratiometric Sensor
Seiichi Onoda, Masayuki Nakano, Keiichi Inoue (WATANABE CO.,Ltd.) EMD2008-35 CPM2008-50 OPE2008-65 LQE2008-34
Abstract (in Japanese) (See Japanese page) 
(in English) We have been investigating push-pull ratiometric optical fiber interrogating systems based on PNCR(PN-code Correlation Reflectometry). PNCR realizes a wide dynamic range without using a high power light source. Push-pull ratiometry can facilitate robust interrogation against disturbances such as drift of electronics or insertion loss in an optical fiber. As part of system variations, we propose another system; Delayed Transmission/Reflection Ratiometry, we propose a novel reflection sensor unit, which can be supported by OTDR based on PNCR.
The sensor unit consists of a transmission/reflection sensor (TR sensor), a dummy fiber and an isolator. Transmission and reflection output of the TR sensor are assumed to change in push-pull manner according to implied physical amount. If transmission or reflection path is given a propagation delay, they can be detected simultaneously in time domain by OTDR. The physical amount can be measured from the ratio of transmittance and reflectance. A displacement sensor system is manufactured and its sensing operation is confirmed experimentally.
Keyword (in Japanese) (See Japanese page) 
(in English) Fiber sencing / PN-code Correlation Reflectometry / push-pull ratiometry / Beam cut / Displacement Sensing / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 191, EMD2008-35, pp. 15-20, Aug. 2008.
Paper # EMD2008-35 
Date of Issue 2008-08-21 (EMD, CPM, OPE, LQE) 
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 EMD2008-35 CPM2008-50 OPE2008-65 LQE2008-34

Conference Information
Committee LQE CPM EMD OPE  
Conference Date 2008-08-28 - 2008-08-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Touhoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2008-08-LQE-CPM-EMD-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Proposal of Displacement Sensing by Delayed Transmission/Reflection Ratiometric Sensor 
Sub Title (in English)  
Keyword(1) Fiber sencing  
Keyword(2) PN-code Correlation Reflectometry  
Keyword(3) push-pull ratiometry  
Keyword(4) Beam cut  
Keyword(5) Displacement Sensing  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Seiichi Onoda  
1st Author's Affiliation WATANABE CO.,Ltd. (WATANABE CO.,Ltd.)
2nd Author's Name Masayuki Nakano  
2nd Author's Affiliation WATANABE CO.,Ltd. (WATANABE CO.,Ltd.)
3rd Author's Name Keiichi Inoue  
3rd Author's Affiliation WATANABE CO.,Ltd. (WATANABE CO.,Ltd.)
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Speaker Author-2 
Date Time 2008-08-28 11:50:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # EMD2008-35, CPM2008-50, OPE2008-65, LQE2008-34 
Volume (vol) vol.108 
Number (no) no.191(EMD), no.192(CPM), no.193(OPE), no.194(LQE) 
Page pp.15-20 
#Pages 6 
Date of Issue 2008-08-21 (EMD, CPM, OPE, LQE) 

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