4 × 25 Gb/s frequency-modulated DBR laser array for 100-GbE 40-km reach application

Shinji Matsuo*, Takaaki Kakitsuka, Toru Segawa, Rieko Sato, Yasuo Shibata, Ryo Takahashi, Hiromi Oohashi, Hiroshi Yasaka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


A monolithically integrated 100-Gb/s throughput (4×25 Gb/s) laser array has been developed that employs frequency-modulated distributed Bragg reflector lasers. An optical filter converts a frequency-modulated signal to an amplitude-modulated signal with a high contrast ratio in addition to reducing the lasing spectrum bandwidth. A clear eye opening after 40-km transmission was observed with a 25-Gb/s nonreturn-to-zero signal in the 1550-nm region.

Original languageEnglish
Pages (from-to)1494-1496
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number17
Publication statusPublished - 2008 Sep
Externally publishedYes


  • 100-Gb ethernet (GbE)
  • Arrayed laser
  • Directly modulated laser
  • Frequency-modulated laser
  • Optical filter

ASJC Scopus subject areas

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


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