Fano resonances in prism-coupled multimode square micropillar resonators
2005; Optica Publishing Group; Volume: 30; Issue: 12 Linguagem: Inglês
10.1364/ol.30.001527
ISSN1539-4794
AutoresHo-Tong Lee, Linjie Zhou, Andrew W. Poon,
Tópico(s)Advanced Fiber Optic Sensors
ResumoWe report Fano resonances in a multimode square glass micropillar resonator; the resonances were obtained by using angle-resolved prism coupling. Our experiments reveal characteristically asymmetric line shapes of high-Q resonances and of detuned low-Q resonances in multimode reflection spectra. The asymmetric resonance line shapes evolve for an approximately pi phase within a 0.5 degree range of reflection angles. We model our observed asymmetric multimode resonances by the far-field interference between a light wave that is evanescently coupled with a high-Q mode orbit and a coherent light wave that is refractively coupled with a detuned low-Q mode orbit.
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