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| Presentation | 2018-10-11 14:00 [Poster Presentation] 12 bit/s/Hz, 58.2 Tbit/s, 256 QAM-160 km C-band WDM Transmission Using an Injection Locking Technique Takashi Kan, Keisuke Kasai, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.)  OFT2018-28 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Injection locking can realize precise carrier-phase synchronization between the transmitted data and a local oscillator with simple receiver configuration. By using this scheme, we have recently demonstrated a 42.3 Tbit/s, 235-ch WDM 64 QAM-160 km C-band transmission with a spectral efficiency (SE) of 9 bit/s/Hz. In this work, by employing Raman amplifiers in our WDM transmission system, we were able to greatly improve the optical signal-to-noise ratio of transmitted data signals and thus succeeded in increasing the QAM multiplicity to 256. With this improvement, we could demonstrate a 58.2 Tbit/s, WDM coherent transmission over 160 km in the C-band with an SE as high as 12 bit/s/Hz. This constitutes the highest capacity yet reported for a 256 QAM WDM transmission. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wavelength division multiplexing / Digital coherent optical transmission / Injection locking / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 238, OFT2018-28, pp. 73-77, Oct. 2018. | |
| Paper # | OFT2018-28 | |
| Date of Issue | 2018-10-04 (OFT) | |
| ISSN | 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 | OFT2018-28 |
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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) | 12 bit/s/Hz, 58.2 Tbit/s, 256 QAM-160 km C-band WDM Transmission Using an Injection Locking Technique |
| Sub Title (in English) | |
| Keyword(1) | Wavelength division multiplexing |
| Keyword(2) | Digital coherent optical transmission |
| Keyword(3) | Injection locking |
| Keyword(4) | |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takashi Kan |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Keisuke Kasai |
| 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 |
| 5th Author's Affiliation | Tohoku University (Tohoku Univ.) |
| Speaker | Author-1 |
| Date Time | 2018-10-11 14:00:00 |
| Presentation Time | 90 minutes |
| Registration for | OFT |
| Paper # | OFT2018-28 |
| Volume (vol) | vol.118 |
| Number (no) | no.238 |
| Page | pp.73-77 |
| #Pages | 5 |
| Date of Issue | 2018-10-04 (OFT) |
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