Journal
OPTICS EXPRESS
Volume 26, Issue 20, Pages 26196-26204Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.026196
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Funding
- Fund of the Natural Science Foundation of China [61405177]
- Natural Science Foundation of Zhejiang [LY17F050008]
- Fujian Province Science Foundation of China [JZ160479]
- Longyan University Science Foundation [2014019]
- Ningbo Sc. & Tech. innovation team plan project [2014B82015]
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Antisymmetric multimode nanobeam photonic crystal cavities (AM-NPCs) are proposed and demonstrated in this paper. Due to transverse symmetry-breaking of the antisymmetric multimode periodic waveguide, anti-crossing of the fundamental mode and 1st-order mode is realized and confirmed by band structure calculation. Two-mode filtering and reflection-free cavity filters based on this characteristic are demonstrated. Experimental results on silicon-on-insulator platform shows that broadband (> 100 nm) reflection suppression (< -10 dB) and high-Q (7 x 10(4)) AM-NPCs can be achieved using existed design methodology and fabrication facility. We also explain resonance splitting of the measured transmission spectra and find resonance-enhanced mode-conversion phenomena in the AM-NPCs. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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