Title :
Time-Domain BPM Technique for Modeling Ultra Short Pulse Propagation in Dispersive Optical Structures: Analysis and Assessment
Author :
Masoudi, Husain M. ; Akond, Mohammad S.
Author_Institution :
Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
In this work, the time-domain beam propagation method (TD-BPM) has been extended to model ultra-short optical pulse propagation in structures containing material dispersion. The method uses Pade approximant to solve the one-way non-paraxial wave equation. The TD-BPM is implemented and analyzed using several iterative numerical techniques to model the propagation of ultra-short pulses in optical waveguide structures containing Lorentz material dispersion. Systematic accuracy and efficiency assessment, compared to the FDTD, showed that the longitudinal and the temporal steps sizes can be a number of order of magnitude larger than the FDTD step sizes. It is concluded that the TD-BPM is suited for long dispersive dielectric structures interaction of short and ultra-short pulse propagation.
Keywords :
high-speed optical techniques; iterative methods; laser beams; optical waveguide theory; Lorentz material dispersion; Pade approximant; dispersive optical structures; iterative numerical techniques; long dispersive dielectric structures; one-way nonparaxial wave equation; optical waveguide structures; time-domain BPM technique; time-domain beam propagation method; ultra short pulse propagation; Dispersion; Finite difference methods; Gallium arsenide; Optical pulse generation; Optical pulses; Time-domain analysis; Beam propagation method (BPM); dispersive material; finite difference time domain; finite-difference analysis; modeling; numerical analysis; optical waveguide theory; pade approximant; ultra short pulse propagation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2316171
