期刊
OPTICS EXPRESS
卷 21, 期 22, 页码 25796-25804出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.025796
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资金
- Engineering and Applied Sciences (EAS) division of the California Institute of Technology
- Powell Foundation
We propose a cladding engineering method that flexibly modifies the radiation patterns and rates of metal-clad nanoscale optical cavity. Optimally adjusting the cladding symmetry of the metal-clad nanoscale optical cavity modifies the modal symmetry and produces highly directional radiation that leads to 90% coupling efficiency into an integrated waveguide. In addition, the radiation rate of the cavity mode can be matched to its absorption rate by adjusting the thickness of the bottom-cladding layer. This approach optimizes the energy-flow rate from the waveguide and maximizes the energy confined inside the nanoscale optical cavity. (c) 2013 Optical Society of America
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