Implementation of perfectly matched layer boundary condition for finite-difference time-domain simulation truncated with gain medium

Qian Wang*, Seng-Tiong Ho

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Boundary condition for the finite-difference-time-domain (FDTD) photonic simulation truncated with a gain medium is studied. Reflection occurs when applying the perfectly matched layer (PML) due to the impedance mismatch. The implementation of PML for the simulation truncated with gain medium is presented including both the un-split and split-field formulation, respectively. Numerical validation through simulating the light propagating in an active semiconductor waveguide containing gain medium indicates that the boundary formulation derived can effectively absorb the out-going light under different carrier densities.

Original languageEnglish (US)
Article number5729387
Pages (from-to)1453-1459
Number of pages7
JournalJournal of Lightwave Technology
Volume29
Issue number10
DOIs
StatePublished - May 5 2011

Keywords

  • Boundary condition
  • finite-difference-time-domain (FDTD)
  • gain medium
  • perfectly matched layer

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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