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Paper Abstract and Keywords
Presentation 2012-10-26 10:30
Cord identification technique using higher order guiding modes of visible light for low bending loss fibers
Lin Ma, Kyozo Tsujikawa, Shinichi Aozasa, Yuji Azuma (NTT) OFT2012-43
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a cord identification technique for ultra-low bending loss fiber using higher order modes of visible light. The bending loss of higher order modes is several orders larger than that of fundamental modes. Higher order modes can exist at shorter wavelengths and their guiding loss is small when the fiber is not tightly bent. As a result, higher order modes are suitable for cord identification purposes with ultra-low bending loss fiber. We determined that the LP21 and LP02 mode group at 650 nm (red) and the LP31 and LP12 mode group at 532 nm (green) are the most effective for cord identification purposes. We employed an offset launch technique to excite higher order modes, and achieved a sensitivity improvement of more than 14 dB. By using our method, a cord can be identified by red or green light even with the naked eye.
Keyword (in Japanese) (See Japanese page) 
(in English) Cord identification / Visible light / Low bending loss fiber / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 261, OFT2012-43, pp. 55-60, Oct. 2012.
Paper # OFT2012-43 
Date of Issue 2012-10-18 (OFT) 
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)
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Conference Information
Committee OFT  
Conference Date 2012-10-25 - 2012-10-26 
Place (in Japanese) (See Japanese page) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2012-10-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Cord identification technique using higher order guiding modes of visible light for low bending loss fibers 
Sub Title (in English)  
Keyword(1) Cord identification  
Keyword(2) Visible light  
Keyword(3) Low bending loss fiber  
1st Author's Name Lin Ma  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Kyozo Tsujikawa  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Shinichi Aozasa  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Yuji Azuma  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Date Time 2012-10-26 10:30:00 
Presentation Time 25 
Registration for OFT 
Paper # IEICE-OFT2012-43 
Volume (vol) IEICE-112 
Number (no) no.261 
Page pp.55-60 
#Pages IEICE-6 
Date of Issue IEICE-OFT-2012-10-18 

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