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A Novel Nonparaxial Time-Domain Beam-Propagation Method for Modeling Ultrashort Pulses in Optical Structures

Masoudi, Husain M. (2007) A Novel Nonparaxial Time-Domain Beam-Propagation Method for Modeling Ultrashort Pulses in Optical Structures. Journal of Lightwave Technology, 25 (10). pp. 3175-3184.

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Abstract

In this paper, a new nonparaxial time-domain beam-propagation method (TD–BPM) based on Padé approximant for modeling ultrashort optical pulses has been proposed and verified. The high efficiency of the technique in modeling long device interaction comes from solving the TD wave equation along one direction and allowing the time window to follow the evolution of the pulse. The accuracy of the method was tested in three different environments of homogenous and nondispersive medium, metallic, and dielectric waveguides and then was applied to model ultrashort pulse propagation in a directional-coupler device. The characterization of the technique shows excellent performance in terms of accuracy, efficiency, and stability, which the conventional paraxial TD–BPM failed to achieve. The new TD–BPM is particularly well suited for the study of unidirectional propagation of compact ultrashort temporal pulses over long distances in waveguide structures.



Item Type:Article
Date:October 2007
Date Type:Publication
Subjects:Electrical
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Masoudi, Husain M.
Email:husainm@kfupm.edu.sa
ID Code:603
Deposited By:ANKAR (g200603940) (g200603940)
Deposited On:25 Mar 2008 11:52
Last Modified:12 Apr 2011 13:05

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