Radiation losses of waveguide-based two-dimensional photonic crystals: Positive role of the substrate

Autor:	A. Béraud, Caleb Smith, Claude Weisbuch, Henri Benisty, D. Labilloy, C. Jouanin, Thomas F. Krauss, David Cassagne
Rok vydání:	2000
Předmět:	Materials science Physics and Astronomy (miscellaneous) Condensed matter physics business.industry Photonic integrated circuit Incoherent scatter Physics::Optics Dielectric Microstructured optical fiber Cladding (fiber optics) Yablonovite law.invention Optics law business Waveguide Photonic crystal
Zdroj:	Applied Physics Letters. 76:532-534
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.125809
Popis:	Radiation losses occurring in photonic crystals etched into planar waveguides are analyzed using a first-order perturbation approximation. Assuming the incoherent scattering limit, the model indicates that losses diminish as the cladding index approaches the core index. A simple scheme is devised to include these losses into purely two-dimensional calculations by using an imaginary index. Such calculations are shown to agree with corresponding experimental transmission through near-infrared photonic crystals, reproducing the contrasting behavior of the “dielectric” and “air” band edges.
Databáze:	OpenAIRE
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