Cost-effective optical chirped duobinary transmitter using an electroabsorption modulated laser

Hanlim Lee, Hoon Kim, Jaehoon Lee, Sung Kee Kim, Gyuwoong Lee, Seongtaek Hwang, Yunje Oh, Jichai Jeong, Changsup Shim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We propose and demonstrate a cost-effective way to implement a 10-Gb/s chirped duobinary (CDB) transmitter using an electroabsorption modulated laser (EML) followed by a LiNbO3 Mach-Zehnder modulator both driven with binary signals. Successful transmission is achieved over 285 km of dispersion-uncompensated standard single-mode fiber without significantly increasing the complexity and cost of the transmitter, compared to conventional duobinary transmitters. The demonstrated CDB signals exhibit a superior performance to conventional duobinary signals, in terms of back-to-back receiver sensitivity and transmission distance. We achieve consistent transmission performance with three EMLs obtained from two different vendors, each having different chirp and transmission characteristics. Therefore, we believe the use of EMLs greatly reduces the implementation issues of 10-Gb/s CDB transmission systems.

Original languageEnglish
Pages (from-to)905-907
Number of pages3
JournalIEEE Photonics Technology Letters
Volume17
Issue number4
DOIs
Publication statusPublished - 2005 Apr

Keywords

  • Electroabsorption modulated laser (EML)
  • Optical duobinary
  • Optical modulation
  • Prechirped modulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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