Resumo

PEREZ RODRIGUEZ, J.  e  PALOMINO-OVANDO, M.. Defectos en estructuras de índice de refracción periódico con gap omnidireccional. Superf. vacío [online]. 2012, vol.25, n.4, pp.218-222. ISSN 1665-3521.

We analyze tunneling modes generated by the introduction of an impurity in a one-dimensional photonic crystal, which is constructed from alternating layers of dielectric and metamaterial. In this work the impurity is generated by changing the refractive index or width the dielectric of the central layer the photonic crystal. It is noted that the tunneling modes which are within the gaps, exhibit an omnidirectional behavior when the condition n₁d₁ +n₂d₂ =0. This condition causes tunneling modes is insensitivity to the type of polarization, incidence angle, scaling of the unit cell. Given the variation of the refractive index of the impurity tunneling modes are generated in any of the gaps. But when you vary the thickness of the impurity are changes in modes of tunneling in both gaps.

Palavras-chave : Optical properties; Metamaterials; Photonic structures; Superlattices.

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