Cost‐Effective Transition to 40 Gb/s Line Rate Using the Existing 10 Gb/s‐Based DWDM Infrastructure

In this paper, we propose and demonstrate a cost‐effective technique to upgrade the capacity of dense wavelength division multiplexing (DWDM) networks to a 40 Gb/s line rate using the existing 10 Gb/s‐based infrastructure. To accommodate 40 Gb/s over the link optimized for 10 Gb/s, we propose applyi...

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Bibliographic Details
Published in:ETRI journal 2008, 30(2), , pp.261-267
Main Authors: Lee, Sang Soo, Cho, Hyunwoo, Lim, Sang‐Kyu, Lee, Dong‐Soo, Yoon, Kyeong‐Mo, Lee, Yong‐Gi, Kim, Kwangjoon, Ko, Jesoo
Format: Article
Language:English
Subjects:
40 Gb/s
forward error correction
modulation format
Optical communications
optical link
optical signal‐to‐noise ratio
Q‐value
전자/정보통신공학
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Summary:In this paper, we propose and demonstrate a cost‐effective technique to upgrade the capacity of dense wavelength division multiplexing (DWDM) networks to a 40 Gb/s line rate using the existing 10 Gb/s‐based infrastructure. To accommodate 40 Gb/s over the link optimized for 10 Gb/s, we propose applying a combination of super‐FEC, carrier‐suppressed return‐to‐zero, and pre‐emphasis to the 40 Gb/s transponder. The transmission of 40 Gb/s DWDM channels over existing 10 Gb/s line‐rate long‐haul DWDM links, including 40×40 Gb/s transmission over KT's standard single‐mode fiber optimized for 10 Gb/s achieves successful results. The proposed upgrading technique allows the Q‐value margin for a 40 Gb/s line rate to be compatible with that of 10 Gb/s.
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.08.1107.0036