Implementation of Perfectly Matched Layer Boundary Condition for Finite-Difference Time-Domain Simulation Truncated With Gain Medium

Author

Wang, Qian ; Ho, Seng-Tiong

Author_Institution

Data Storage Inst., Agency for Sci., Technol. & Res., Singapore, Singapore

Volume

29

Issue

10

fYear

2011

fDate

5/15/2011 12:00:00 AM

Firstpage

1453

Lastpage

1459

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.

Keywords

boundary-value problems; carrier density; finite difference time-domain analysis; light absorption; light reflection; optical waveguides; FDTD photonic simulation; boundary formulation; carrier density; finite-difference time-domain simulation; gain medium; impedance mismatch; light absorption; light propagation; light reflection; perfectly matched layer boundary condition; semiconductor waveguide; split-field formulation; Boundary conditions; Charge carrier density; Finite difference methods; Mathematical model; Numerical models; Refractive index; Time domain analysis; Boundary condition; finite-difference-time-domain (FDTD); gain medium; perfectly matched layer;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2126559

Filename

5729387