Comparison of transmission performance of 40-Gb/s optical duobinary and DCS-RZ signals using 10- and 40-Gb/s LiNbO3 Mach-Zehnder modulators

Yonghoon Kim, Hodeok Jang, Sangil Kim, Seunghyun Oh, Jaehoon Lee, Kyoungsoo Kim, Hanlim Lee, Jichai Jeong

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We investigated a cost-effective method using 10-Gb/s LiNbO3 Mach-Zehnder Modulators (MZMs) for transmitting 40-Gb/s duobinary nonreturn-to-zero (NRZ) and duobinary carrier-suppressed return-to-zero (DCS-RZ) signals. The transmission performance of the signals was investigated. The optimum bandwidths of low-pass filters in transmitters using 10- and 40-Gb/s LiNbO3 MZMs were also investigated. The calculated transmission performance of the transmitter using 10-Gb/s LiNbO3 MZMs was compared to that using 40-Gb/s LiNbO3 MZMs. The effect of the bias offset in the transmitters was investigated. Compared to duobinary-NRZ and DCS-RZ signals generated by a transmitter using 40-Gb/s LiNbO3 MZMs, those generated by using 10-Gb/s LiNbO3 MZMs can be transmitted with 1-dB power penalty over 480-km transmission.

Original languageEnglish
Pages (from-to)318-324
Number of pages7
JournalJournal of Lightwave Technology
Volume25
Issue number1
DOIs
Publication statusPublished - 2007 Jan

Bibliographical note

Funding Information:
Manuscript received March 6, 2006; revised October 2, 2006. This work was supported in part by the National Research Laboratory (NRL) Program and the Brain Korea 21 Project in South Korea. Y. Kim, S. Kim, J. Lee, and H. Lee were with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea. They are now with Samsung Electronics, Suwon 443-742, Korea. H. Jang, K. Kim, and J. Jeong are with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea (e-mail: jcj@korea.ac.kr). S. Oh was with the Department of Radio Engineering Korea University, Seoul 136-701, Korea. He is now with LG Powercom., Seoul 137-070, Korea. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JLT.2006.887181

Keywords

  • Duobinary
  • Modulation format
  • Optical communication
  • Simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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