Extended transmission reach using optical filtering of frequency-modulated widely tunable ssg-dbr laser

S. Matsuo, T. Kakitsuka, T. Segawa, N. Fujiwara, Y. Shibata, H. Oohashi, H. Yasaka, H. Suzuki

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We propose a novel transmitter consisting of a frequency-modulated widely tunable super-structure-grating distributed Bragg reflector (SSG-DBR) laser and an optical filter. The SSG-DBR laser acts as a frequency modulating light source with a constant output power by modulating the reverse bias voltage in the phase control (PC) region. By optically filtering the output light from the frequency-modulated laser, we have demonstrated 60-and 180-km transmissions for 20-and 10-Gb/s nonreturn-to-zero (NRZ) signals, respectively. The power penalty was 2.2 dB after the 180-km transmission of a 10-Gb/s NRZ signal as determined by bit-error-rate measurements. Furthermore, an extended transmission reach was achieved with a wide tuning range without controlling the bias and modulating voltages in the PC region.

Original languageEnglish
Pages (from-to)294-296
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
Issue number4
DOIs
Publication statusPublished - 2008 Feb 15
Externally publishedYes

Keywords

  • Directly modulated laser
  • Frequency-modulated laser
  • Optical filter
  • Optical minimum-shift keying (OMSK)
  • Super-structure grating (SSG)
  • Widely tunable laser

ASJC Scopus subject areas

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

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