Monolithically Integrated InGaAsP/InP Composite-Cavity Distributed Feedback Lasers

K. Y. Liou, U. Koren, T. L. Koch, S. Chandrasekhar, E. C. Burrows, C. A. Burrus

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Reported linewidths for DFB lasers integrated with a passive extended cavity are broader than expected, probably due to a poor optical coupling to the extended cavity. An improved optical coupling can further reduce the linewidth but at the same time degrades the FM response. We report a monolithic integrated DFB laser with high optical coupling to a low-loss extended cavity and an active modulator section. The linewidth is reduced to 1 MHz while a flat FM response is maintained at 0.7 GHz/mA. The performance of this laser is compared to other conventional composite-cavity DFB lasers.

Original languageEnglish (US)
Pages (from-to)416-418
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
StatePublished - Dec 1989

ASJC Scopus subject areas

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


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