Fano Resonance between Mie and Bragg Scattering in Photonic Crystals

M. V. Rybin, A. B. Khanikaev, M. Inoue, K. B. Samusev, M. J. Steel, G. Yushin, M. F. Limonov

Research output: Contribution to journalArticlepeer-review

147 Citations (Scopus)

Abstract

We report the observation of a Fano resonance between continuum Mie scattering and a narrow Bragg band in synthetic opal photonic crystals. The resonance leads to a transmission spectrum exhibiting a Bragg dip with an asymmetric profile, which can be tunably reversed to a Bragg rise. The Fano asymmetry parameter is linked with the dielectric contrast between the permittivity of the filler and the specific value determined by the opal matrix. The existence of the Fano resonance is directly related to disorder due to nonuniformity of a-SiO2 opal spheres. The theoretical "quasi-3D" model produces results in excellent agreement with the experimental data.

Original languageEnglish
Article number023901
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume103
Issue number2
DOIs
Publication statusPublished - 6 Aug 2009

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