16 February 2009 FDTD sources for localized state excitation in photonic crystals and photonic quasi-crystals
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Proceedings Volume 7223, Photonic and Phononic Crystal Materials and Devices IX; 72230R (2009); doi: 10.1117/12.809209
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States
Abstract
Numerical methods, such as the finite difference time domain (FDTD) technique, are commonly used to study transmission properties, waveguide modes, and localized states of photonic crystals and photonic quasi-crystals. The degree to which a localized state is excited is dependent on the source's topology. Researchers have proposed a number of different source configurations in order to efficiently excite localized states; dipole sources, random sources, and initial field distributions. The efficient excitation of different localized states in a photonic crystal and quasi-crystal through a general source configuration remains an issue to be addressed. This work re-examines the techniques currently used and determines the most efficient method to excite the modes of a photonic crystal and quasi-crystal without prior knowledge of the localized state profiles.
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Scott R. Newman, Robert C. Gauthier, "FDTD sources for localized state excitation in photonic crystals and photonic quasi-crystals", Proc. SPIE 7223, Photonic and Phononic Crystal Materials and Devices IX, 72230R (16 February 2009); doi: 10.1117/12.809209; https://doi.org/10.1117/12.809209
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KEYWORDS
Finite-difference time-domain method

Photonic crystals

Dielectrics

Dielectric polarization

Fourier transforms

Numerical analysis

Crystals

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