Large-Signal Dynamic Behavior of Distributed-Feedback Lasers Including Lateral Effects

Siu Fung Yu, R. G.S. Plumb, L. M. Zhang, M. C. Nowell, J. E. Carrot

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


The large-signal behavior of DFB lasers is analyzed, including lateral as well as longitudinal variations in carrier density, photon density, and refractive index. The effective index method and other approximations are used to reduce the complex three-dimensional problem to one dimension. The coupled wave and carrier rate equations are then solved in a self consistent manner. Lateral spatial carrier hole burning and lateral diffusion are found to affect the relaxation oscillation frequency and damping rate of DFB lasers, depending on their detailed structure. The effective time-averaged linewidth Enhancements factor is also affected. In symmetric AR-coated A / 4 phase-shifted lasers the side mode suppression ratio can be deteriorated significantly by lateral spatial hole burning when kL is large.
Original languageEnglish
Pages (from-to)1740-1750
Number of pages11
JournalIEEE Journal of Quantum Electronics
Issue number8
Publication statusPublished - 1 Jan 1994
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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