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Paper Abstract and Keywords
Presentation 2016-08-26 09:55
Mode field diameter of LP11 mode for estimating coupling efficiencies at a splice and its measurement technique
Atsushi Nakamura, Keiji Okamoto, Yusuke Koshikiya, Tetsuya Manabe (NTT) OFT2016-12
Abstract (in Japanese) (See Japanese page) 
(in English) In mode division multiplexing transmission using few-mode fibers (FMFs), the losses and mode crosstalk that occur at splices are key issues, since they degrade the transmission performance. Therefore, it is essential when designing a system to be able to estimate the splice losses and mode crosstalk at a splice, i.e. coupling efficiencies at a splice, analytically before installing FMFs in the field. In this paper, we propose an effective mode field diameter (MFD) for the second-order (LP11) mode to estimate the coupling efficiencies in two-mode fibers (TMFs). Simulations are performed to verify the estimation validity. In addition, we propose a novel technique based on optical time domain reflectometry (OTDR) to measure the effective MFD distribution along TMFs. Its feasibility is demonstrated experimentally.
Keyword (in Japanese) (See Japanese page) 
(in English) Mode field diameter / higher-order mode / splice loss / mode crosstalk / optical time domain reflectometry / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 198, OFT2016-12, pp. 5-10, Aug. 2016.
Paper # OFT2016-12 
Date of Issue 2016-08-18 (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)
Download PDF OFT2016-12

Conference Information
Committee OCS OFT LSJ  
Conference Date 2016-08-25 - 2016-08-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Chitose-alcadia plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2016-08-OCS-OFT-LSJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Mode field diameter of LP11 mode for estimating coupling efficiencies at a splice and its measurement technique 
Sub Title (in English)  
Keyword(1) Mode field diameter  
Keyword(2) higher-order mode  
Keyword(3) splice loss  
Keyword(4) mode crosstalk  
Keyword(5) optical time domain reflectometry  
1st Author's Name Atsushi Nakamura  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Keiji Okamoto  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Yusuke Koshikiya  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Tetsuya Manabe  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Date Time 2016-08-26 09:55:00 
Presentation Time 25 
Registration for OFT 
Paper # IEICE-OFT2016-12 
Volume (vol) IEICE-116 
Number (no) no.198 
Page pp.5-10 
#Pages IEICE-6 
Date of Issue IEICE-OFT-2016-08-18 

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