Global optimization of an encapsulated Si/SiO$$_2$$ L3 cavity with a 43 million quality factor
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AbstractWe optimize a silica-encapsulated silicon L3 photonic crystal cavity for ultra-high quality factor by means of a global optimization strategy, where the closest holes surrounding the cavity are varied to minimize out-of-plane losses. We find an optimal value of $$Q_c=4.33\times 10^7$$ Q c = 4.33 × 10 7 , which is predicted to be in the 2 million regime in presence of structural imperfections compatible with state-of-the-art silicon fabrication tolerances.
2021 ◽
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2017 ◽
Vol 56
(9)
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pp. 090304
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