Three-Dimensional FDTD Simulation of Nonlinear Ferroelectric Materials in Rectangular Waveguide

Autor:	Michael E. Baginski, Michael C. Hamilton, Byron T. Caudle, Hulya Kirkici
Rok vydání:	2013
Předmět:	Physics Nuclear and High Energy Physics Frequency band business.industry Finite-difference time-domain method Condensed Matter Physics Ferroelectricity Waveguide (optics) Nonlinear system Amplitude Optics Dispersion (optics) Transient (oscillation) business
Zdroj:	IEEE Transactions on Plasma Science. 41:365-370
ISSN:	1939-9375 0093-3813
Popis:	Nonlinear transmission lines have numerous applications in the communications and defense industries due to their ability to form and propagate short-duration ultrawideband pulses. This paper simulates a short-duration Gaussian transient exciting low-order TEm,0 modes in a nonlinear ferroelectric-filled conducting waveguide. A 3-D finite-difference time-domain simulation is employed in the analysis, and the ferroelectric-filled waveguide model is based on a nonlinear polarization relationship extrapolated from measurements. A small portion of the frequency band operates in the nonlinear polarization region. These components will propagate at higher velocity than lower amplitude components, and this effect counteracts dispersion and results in compression of the pulses into solitons as they propagate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5aeb823dbcaf5e789318380b823edbe1 https://doi.org/10.1109/tps.2013.2239663 Zobrazit plný text záznamu