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Paper Abstract and Keywords
Presentation 2008-08-28 16:10
Ultrafast Operation of Digital Coherent Receivers Using Optical Time-Division Demultiplexing Function
Chao Zhang, Yojiro Mori, Koji Igarashi, Kazuhiro Katoh, Kazuro Kikuchi (The Univ. of Tokyo) OCS2008-40
Abstract (in Japanese) (See Japanese page) 
(in English) The digital coherent receiver realizes phase synchronization in the digital domain and can demodulate any multilevel coded optical signals. However, the maximum symbol rate processed by such receiver is limited by the speed of electric ADCs and DSP. Although real-time operation at 10 Gsymbol/s using a digital coherent receiver has recently been demonstrated, it is still difficult to increase the symbol rate beyond 40 Gsymbol/s. In order to cope with this difficulty, we propose a novel scheme, which employs an LO pulsed at the subharmonic frequency of the symbol rate, enabling optical time-division demultiplexing of the signal at the digital coherent receiver. We demonstrate that the new type of digital coherent receiver operating at 10 Gsymbol/s can demodulate the aggregate symbol rate of 160 Gsymbol/s.
Keyword (in Japanese) (See Japanese page) 
(in English) digital signal processing / optical fiber communication / optical time-division demultiplexing / phase-shift keying / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 189, OCS2008-40, pp. 41-46, Aug. 2008.
Paper # OCS2008-40 
Date of Issue 2008-08-21 (OCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 OCS OFT  
Conference Date 2008-08-28 - 2008-08-29 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2008-08-OCS-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Ultrafast Operation of Digital Coherent Receivers Using Optical Time-Division Demultiplexing Function 
Sub Title (in English)  
Keyword(1) digital signal processing  
Keyword(2) optical fiber communication  
Keyword(3) optical time-division demultiplexing  
Keyword(4) phase-shift keying  
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1st Author's Name Chao Zhang  
1st Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
2nd Author's Name Yojiro Mori  
2nd Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
3rd Author's Name Koji Igarashi  
3rd Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
4th Author's Name Kazuhiro Katoh  
4th Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
5th Author's Name Kazuro Kikuchi  
5th Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
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Speaker Author-1 
Date Time 2008-08-28 16:10:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2008-40 
Volume (vol) vol.108 
Number (no) no.189 
Page pp.41-46 
#Pages
Date of Issue 2008-08-21 (OCS) 


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