منابع مشابه
Embedded, Doubly Periodic Minimal Surfaces
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We construct finite-energy instanton connections over R4 which are periodic in two directions via an analogue of the Nahm transform for certain singular solutions of Hitchin’s equations defined over a 2-torus.
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Periodic structures are well known in various branches of physics for their ability to provide a stopband. In this article, using optical periodic structures we showed that, when a second periodicity--very closed to the original periodicity is introduced, large number of states appears in the stopband corresponding to the first periodicity. In the limit where the two periods matches, we have a ...
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Hybrid finite element (FE) boundary integral (BI) analysis of infinite periodic arrays is extended to include planar multilayered Green’s functions. In this manner, a portion of the volumetric dielectric region ci~n be modeled via the finite element method whereas uniform multilayered regions can be modeled using a multilayered Green’s function. As such, thick uniform substrates can be modeled ...
متن کاملIncreasing the angular tolerance of resonant grating filters with doubly periodic structures.
One can increase the angular tolerance of resonant grating filters without modifying the spectral bandwidth by adding a second grating component parallel to the first one. The angular tolerance and the filter linewidth can be controlled by the designer in an independent way. Numerical results show that this property permits the use of waveguide-grating filters with standard collimated beams.
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ژورنال
عنوان ژورنال: Journal of Knot Theory and Its Ramifications
سال: 2009
ISSN: 0218-2165,1793-6527
DOI: 10.1142/s0218216509007646