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Fabrication-tolerant high quality factor photonic crystal microcavities

Kartik Srinivasan·Paul E. Barclay·Oskar Painter
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Abstract

A two-dimensional photonic crystal microcavity design supporting a wavelength-scale volume resonant mode with a calculated quality factor (Q) insensitive to deviations in the cavity geometry at the level of Q~2x10^4 is presented. The robustness of the cavity design is confirmed by optical fiber-based measurements of passive cavities fabricated in silicon. For microcavities operating in the lambda = 1500 nm wavelength band, quality factors between 1.3-4.0x10^4 are measured for significant variations in cavity geometry and for resonant mode normalized frequencies shifted by as much as 10% of the nominal value.

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Kartik Srinivasan, Paul E. Barclay, Oskar Painter. 2003-12-09. Fabrication-tolerant high quality factor photonic crystal microcavities. https://doi.org/10.1364/opex.12.001458

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