DocumentCode :
939420
Title :
Scattering of Spatial Optical Solitons by Subwavelength Air Holes
Author :
Greene, Jethro H. ; Taflove, Allen
Author_Institution :
Northwestern Univ., Evanston
Volume :
17
Issue :
11
fYear :
2007
Firstpage :
760
Lastpage :
762
Abstract :
Using the finite-difference time-domain method, we model the propagation of spatial optical solitons having two orthogonal electric field vector components, and the scattering of such solitons by compact subwavelength air holes (i.e., abrupt dielectric discontinuities in the direct paths of the solitons). Our propagation and scattering studies assume a realistic glass characterized by a three-pole Sellmeier linear dispersion, an instantaneous Kerr nonlinearity, and a dispersive Raman nonlinearity. An unexpected spatial soliton scattering phenomenon is observed: the coalescence of the scattered electromagnetic field into a propagating lower-energy spatial soliton at a point many tens of wavelengths beyond the scattering air hole. Overall, our computational technique is general, and should permit future investigations and design of devices exploiting spatial soliton interactions in background media having submicrometer air holes and dielectric and metal inclusions.
Keywords :
electromagnetic wave propagation; electromagnetic wave scattering; finite difference time-domain analysis; optical Kerr effect; optical dispersion; optical solitons; Kerr nonlinearity; computational technique; dispersive Raman nonlinearity; electromagnetic field scattering; finite-difference time-domain method; orthogonal electric field vector component; spatial optical soliton propagation; subwavelength air hole; three-pole Sellmeier linear dispersion; Finite-difference time-domain (FDTD); nonlinear SchrÖdinger (NLS); unidirectional pulse propagation equation (UPPE);
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2007.908041
Filename :
4357989
Link To Document :
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