20 November 2012 Fano resonance in whispering gallery photonic microcavities
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Abstract
Fano resonances, sometimes behaving like electromagnetic induced transparency (EIT)-like resonances in whisperinggallery- mode (WGM) microcavities are attracting much attention due to the important applications in high-sensitivity biosensing, optical switch, and slow light. In this paper, Fano resonances in several WGM systems are reported, including in a single WGM photonic microcavity and in coupled WGM microcavities. Specifically, in a single WGM microcavity system, Fano or EIT-like resonances in both polydimethylsiloxane (PDMS) coated silica microtoroid and bare silica microtoroid are experimentally investigated. In coupled microcavity system, we report a theoretical study of EIT-like resonance in an array of microcavities indirectly coupled through a parallel waveguides system. Finally, we experimentally investigate the Fano resonance in two microcavities indirectly coupled via a single fiber taper.
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Yun-Feng Xiao, Yun-Feng Xiao, Bei-Bei Li, Bei-Bei Li, Xue-Feng Jiang, Xue-Feng Jiang, Yan Li, Yan Li, Qihuang Gong, Qihuang Gong, "Fano resonance in whispering gallery photonic microcavities", Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85640V (20 November 2012); doi: 10.1117/12.2000397; https://doi.org/10.1117/12.2000397
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