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Paper Abstract and Keywords
Presentation 2008-10-24 15:50
A study of bias control method for RZ-DQPSK modulator
Yuichi Akiyama, Takeshi Hoshida, Hisao Nakashima, Jens C. Rasmussen (Fujitsu), Zhenning Tao (FRDC) OCS2008-80 OPE2008-123 LQE2008-92
Abstract (in Japanese) (See Japanese page) 
(in English) To realize RZ-DQPSK modulation format, automatic bias control (ABC) is one of the key technology. We organize ABC scheme for RZ-DQPSK, and propose a monitor and control method for π/2 phase shifter between I and Q arms of the DQPSK modulator. Since this new method can work without dither signal, a highly accurate control is achieved without additional degradation to the transmitter signal. We have calculated the amount of Q-penalty due to bias change and confirmed the operating principle of new control method by simulations for 112 Gb/s polarization multiplexing RZ-DQPSK.
Keyword (in Japanese) (See Japanese page) 
(in English) phase modulation / DQPSK / modulator / bias control / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 259, OCS2008-80, pp. 167-170, Oct. 2008.
Paper # OCS2008-80 
Date of Issue 2008-10-16 (OCS, OPE, LQE) 
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)
Download PDF OCS2008-80 OPE2008-123 LQE2008-92

Conference Information
Committee OCS LQE OPE  
Conference Date 2008-10-23 - 2008-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2008-10-OCS-LQE-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of bias control method for RZ-DQPSK modulator 
Sub Title (in English)  
Keyword(1) phase modulation  
Keyword(2) DQPSK  
Keyword(3) modulator  
Keyword(4) bias control  
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1st Author's Name Yuichi Akiyama  
1st Author's Affiliation Fujitsu Limited (Fujitsu)
2nd Author's Name Takeshi Hoshida  
2nd Author's Affiliation Fujitsu Limited (Fujitsu)
3rd Author's Name Hisao Nakashima  
3rd Author's Affiliation Fujitsu Limited (Fujitsu)
4th Author's Name Jens C. Rasmussen  
4th Author's Affiliation Fujitsu Limited (Fujitsu)
5th Author's Name Zhenning Tao  
5th Author's Affiliation Fujitsu Research & Development Center (FRDC)
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Speaker Author-1 
Date Time 2008-10-24 15:50:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2008-80, OPE2008-123, LQE2008-92 
Volume (vol) vol.108 
Number (no) no.259(OCS), no.260(OPE), no.261(LQE) 
Page pp.167-170 
#Pages 4 
Date of Issue 2008-10-16 (OCS, OPE, LQE) 

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