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Paper Abstract and Keywords
Presentation 2008-01-24 16:40
Development of high sensitive analysis technique by CRD (Cavity Ring Down) method with optical fiber
Masakazu Takagi, Masanori Matsuura, Shigenori Itsuzaki (TATSUTA ELECTRIC WIRE & CABLE) OFT2007-55
Abstract (in Japanese) (See Japanese page) 
(in English) The online quality control of impurities such as water in highly pure materials used for semiconductor manufactureis needed. Currently, CRD (Cavity Ring-Down) technique has been one method of online high sensitive analysis. However, in case of conventional CRD, measurement system is unstable because it is easy to be affected by surrounding noise such as temperature and vibration. In this paper, we have developed novel optical fiber CRD system using a fiber loop instead of a pair of mirrers. Although this system is very stable and enables the analysis of microscale sample, in this CRD system,acceptable RDP (Ring -Down Pulse) for high sensitive analysis were not observed because of light loss through sample cell. So,we used optical amplifier in fiber-loop to repair light loss through sample cell. This amplified CRD system made improvement of measurement sensitivity. But we have to improve still further measurement sensitivity depending on analyte assayed. Wehave tried to develop low-loss cell, but at present satisfactory result are not achieved. We will maintain our approach to increase measurement sensitivity.
Keyword (in Japanese) (See Japanese page) 
(in English) Cavity Ring-Down / coupler / Ring-Down Pulse / optical amplifier / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 451, OFT2007-55, pp. 33-36, Jan. 2008.
Paper # OFT2007-55 
Date of Issue 2008-01-17 (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  
Conference Date 2008-01-24 - 2008-01-25 
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 2008-01-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of high sensitive analysis technique by CRD (Cavity Ring Down) method with optical fiber 
Sub Title (in English)  
Keyword(1) Cavity Ring-Down  
Keyword(2) coupler  
Keyword(3) Ring-Down Pulse  
Keyword(4) optical amplifier  
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Keyword(6)  
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1st Author's Name Masakazu Takagi  
1st Author's Affiliation TATSUTA ELECTRIC WIRE & CABLE Co. LTD (TATSUTA ELECTRIC WIRE & CABLE)
2nd Author's Name Masanori Matsuura  
2nd Author's Affiliation TATSUTA ELECTRIC WIRE & CABLE Co. LTD (TATSUTA ELECTRIC WIRE & CABLE)
3rd Author's Name Shigenori Itsuzaki  
3rd Author's Affiliation TATSUTA ELECTRIC WIRE & CABLE Co. LTD (TATSUTA ELECTRIC WIRE & CABLE)
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Speaker Author-2 
Date Time 2008-01-24 16:40:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2007-55 
Volume (vol) vol.107 
Number (no) no.451 
Page pp.33-36 
#Pages 4 
Date of Issue 2008-01-17 (OFT) 

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