High-speed frequency modulated DBR lasers for long-reach transmission

Takaaki Kakitsuka*, Shinji Matsuo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We present a novel high-speed transmitter consisting of a frequency modulated DBR laser and optical filters. The refractive index modulation in the phase control region of the DBR laser allows highspeed frequency modulation. The generated frequency modulated signal is converted to an intensity modulated signal using the edge of the optical filter pass band. We present theoretical simulations of high-speed modulation characteristics and extension of transmission reach. With the proposed transmitter, we review the experimental demonstration of 180-km transmission of a 10-Gb/s signal with a tuning range of 27 nm and 60-km transmission of a 20-Gb/s signal.

Original languageEnglish
Pages (from-to)929-936
Number of pages8
JournalIEICE Transactions on Electronics
Issue number7
Publication statusPublished - 2009 Jan 1
Externally publishedYes


  • DBR laser
  • FM/am conversion
  • Frequency modulation
  • Optical filter

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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