Chirp control of semiconductor laser by using hybrid modulation

Mitsunari Kanno, Shigeru Mieda, Nobuhide Yokota, Wataru Kobayashi, Hiroshi Yasaka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Frequency chirp of a semiconductor laser is controlled by using hybrid modulation, which simultaneously modulates intra-cavity loss and injection current to the laser. The positive adiabatic chirp of injection-current modulation is compensated with the negative adiabatic chirp created by intra-cavity-loss modulation, which enhances the chromatic-dispersion tolerance of the laser. A proof-of-concept transmission experiment confirmed that the hybrid modulation laser has a larger dispersion tolerance than conventional directly modulated lasers due to the negative frequency chirp originating from intra-cavity-loss modulation.

Original languageEnglish
Pages (from-to)561-565
Number of pages5
JournalIEICE Transactions on Electronics
VolumeE101C
Issue number7
DOIs
Publication statusPublished - 2018 Jul

Keywords

  • Dispersion tolerance
  • Frequency chirp
  • Frequency response
  • Semiconductor lasers

ASJC Scopus subject areas

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

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