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| Presentation | 2018-10-11 14:00 [Poster Presentation] Observation of GAWBS noise and development of its compensation technique in digital coherent optical transmission Naoya Takefushi, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.)  OFT2018-29 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Guided acoustic-wave Brillouin scattering (GAWBS) noise is an optical phase fluctuation that occurs coherently with thermally excited vibration modes in a cylindrical fiber structure. Since GAWBS noise propagates in the transmission direction, it may degrade the quality of the transmitted optical data signal. We showed that an optical phase noise of more than 1 degree was applied to the data signal after a 160 km transmission, which indicates GAWBS noise may become a critical issue in an ultra-multilevel QAM transmission such as 1024 QAM. To compensate for the phase noise, we have newly proposed a reverse phase modulation (RPM) method, where GAWBS information was detected by using a pilot tone and fed back to the data signal in a reverse phase relation. Furthermore, we have successfully removed an error floor caused by GAWBS noise in a polarization-multiplexed 1024 QAM-160 km transmission with RPM method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Guided acoustic-wave Brillouin scattering / ultra-multilevel QAM transmission / digital coherent optical transmission / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 238, OFT2018-29, pp. 79-83, Oct. 2018. | |
| Paper # | OFT2018-29 | |
| Date of Issue | 2018-10-04 (OFT) | |
| 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 | OFT2018-29 |
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| Conference Information | |
| Committee | OFT |
| Conference Date | 2018-10-11 - 2018-10-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Touhoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2018-10-OFT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Observation of GAWBS noise and development of its compensation technique in digital coherent optical transmission |
| Sub Title (in English) | |
| Keyword(1) | Guided acoustic-wave Brillouin scattering |
| Keyword(2) | ultra-multilevel QAM transmission |
| Keyword(3) | digital coherent optical transmission |
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| 1st Author's Name | Naoya Takefushi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Masato Yoshida |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Keisuke Kasai |
| 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 |
| 5th Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | 1 |
| Date Time | 2018-10-11 14:00:00 |
| Presentation Time | 90 |
| Registration for | OFT |
| Paper # | IEICE-OFT2018-29 |
| Volume (vol) | IEICE-118 |
| Number (no) | no.238 |
| Page | pp.79-83 |
| #Pages | IEICE-5 |
| Date of Issue | IEICE-OFT-2018-10-04 |
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