Oblique propagation of electromagnetic and elastic waves for an array of cylindrical fibres

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Journal Article
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2003, 459 (2037), pp. 2215 - 2263
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This paper presents analysis of electromagnetic and elastodynamic waves propagating through a doubly periodic array of cylindrical channels in oblique incidence. A new method, based on a multipole scattering approach, has been proposed to reduce these spectral problems for partial differential equations to certain algebraic problems of the Rayleigh type. We obtain a formulation in terms of an eigenvalue problem that enables us to construct the high-order dispersion curves and to study both photonic and phononic band-gap structures in oblique incidence. We also address the question of a singular perturbation induced by the conical incidence and discuss some effective properties for ferromagnetic photonic crystal fibres in the long-wavelength limit.
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