Paper Abstract and Keywords |
Presentation |
2012-07-26 14:05
32 RZ/QAM coherent optical transmission employing an RZ-CW conversion technique Keisuke Kasai, David Odeke Otuya, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2012-23 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Coherent optical time division multiplexing (OTDM) transmission with a multi-level modulation format has attracted a lot of attention as a ultra-high speed and highly spectral-efficient optical transmission system. However, in the conventional coherent OTDM, it is difficult to demodulate an ultra-high speed, multi-level RZ data signal with a high signal to noise ratio due to input optical power limitation of coherent detection circuits. Recently, we proposed a demodulation scheme by using an RZ-CW conversion scheme in a coherent receiver, in which the transmitted coherent RZ data are OTDM demultiplexed and converted into a data signal on a CW carrier. In this paper, we demonstrate an advantage of the scheme with 10 Gsymbol/s, 4- and 8-OTDM 32 RZ/QAM demodulation experiments. Furthermore, we have successfully transmitted a polarization multiplexed, 10 Gsymbol/s, 32 RZ/QAM (800 Git/s) data signal over 225 km by using this conversion scheme. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Coherent transmission / Optical time division multiplexing / QAM / Optical phase-locked loop / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 152, OCS2012-23, pp. 13-18, July 2012. |
Paper # |
OCS2012-23 |
Date of Issue |
2012-07-19 (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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OCS2012-23 |
Conference Information |
Committee |
OCS |
Conference Date |
2012-07-26 - 2012-07-26 |
Place (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
OCS |
Conference Code |
2012-07-OCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
32 RZ/QAM coherent optical transmission employing an RZ-CW conversion technique |
Sub Title (in English) |
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Keyword(1) |
Coherent transmission |
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Optical time division multiplexing |
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QAM |
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Optical phase-locked loop |
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1st Author's Name |
Keisuke Kasai |
1st Author's Affiliation |
Tohoku University (Tohoku Univ.) |
2nd Author's Name |
David Odeke Otuya |
2nd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
3rd Author's Name |
Masato Yoshida |
3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
4th Author's Name |
Toshihiko Hirooka |
4th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
5th Author's Name |
Masataka Nakazawa |
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Tohoku University (Tohoku Univ.) |
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Speaker |
Author-1 |
Date Time |
2012-07-26 14:05:00 |
Presentation Time |
25 minutes |
Registration for |
OCS |
Paper # |
OCS2012-23 |
Volume (vol) |
vol.112 |
Number (no) |
no.152 |
Page |
pp.13-18 |
#Pages |
6 |
Date of Issue |
2012-07-19 (OCS) |
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