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Paper Abstract and Keywords
Presentation 2010-06-24 10:45
Single-channel 400 Gbit/s, OTDM-32 RZ/QAM coherent transmission over 225 km
Keisuke Kasai, Tatsunori Omiya, Pengyu Guan, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2010-11
Abstract (in Japanese) (See Japanese page) 
(in English) Coherent optical time division multiplexing (OTDM) transmission with a multi-level modulation format based on digital signal processing (DSP) has attracted a lot of attention with a view to expanding the capacity per channel of wavelength division multiplexing (WDM) transmission systems. This transmission system can overcome the speed and bandwidth limitations of electrical components such as A/D and D/A converters and realize ultrahigh-speed coherent transmission by using a multi-level amplitude and phase-modulated coherent RZ pulse and the OTDM. However, in a conventional coherent OTDM system, the optical phase between an RZ data pulse and a local oscillator are not phase-locked. Therefore, it is difficult to realize a coherent OTDM transmission with high multiplicity. In this work, we demonstrated a multi-level coherent OTDM transmission with a high-precision optical phase-locked loop (OPLL) technique by using optical comb generation circuits. 400 Gbit/s data (polarization-multiplexed, 10 Gsymbol/s, 4-OTDM 32 RZ/QAM) were successfully transmitted over 225 km with a bit error rate performance below the forward error correction (FEC) limit.
Keyword (in Japanese) (See Japanese page) 
(in English) Coherent transmission / Optical time division multiplexing / Optical phase-locked loop / QAM / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 94, OCS2010-11, pp. 1-6, June 2010.
Paper # OCS2010-11 
Date of Issue 2010-06-17 (OCS) 
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)
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Conference Information
Committee OCS NS PN  
Conference Date 2010-06-24 - 2010-06-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Akita University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Core/metro system, Photonic network system, Optical network operation and administration, Optical network design, Traffic engineering, Signaling, GMPLS, Inter-domain route control, Network monitoring, Ethernet, Optical transport network(OTN), High-speed interface, Optical control(wavelength conversion/switching/routing), optical node technology, Optical crossconnect(OXC), Optical add/drop multiplexer(OADM), Optical multipxing/demultiplexing equipment, Optical signal processing, Optical swtiching device, etc 
Paper Information
Registration To OCS 
Conference Code 2010-06-OCS-NS-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Single-channel 400 Gbit/s, OTDM-32 RZ/QAM coherent transmission over 225 km 
Sub Title (in English)  
Keyword(1) Coherent transmission  
Keyword(2) Optical time division multiplexing  
Keyword(3) Optical phase-locked loop  
Keyword(4) QAM  
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1st Author's Name Keisuke Kasai  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Tatsunori Omiya  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Pengyu Guan  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Masato Yoshida  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Toshihiko Hirooka  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Masataka Nakazawa  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2010-06-24 10:45:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2010-11 
Volume (vol) vol.110 
Number (no) no.94 
Page pp.1-6 
#Pages 6 
Date of Issue 2010-06-17 (OCS) 

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