Photonic crystal dumbbell resonators in silicon and aluminum nitride integrated optical circuits

Wolfram H. P. Pernice; Chi Xiong; Hong Tang

doi:10.1117/1.JNP.7.073095

16 April 2013 Photonic crystal dumbbell resonators in silicon and aluminum nitride integrated optical circuits

Wolfram H. P. Pernice, Chi Xiong, Hong Tang

Author Affiliations +

Journal of Nanophotonics, Vol. 7, Issue 1, 073095 (April 2013). https://doi.org/10.1117/1.JNP.7.073095

Abstract

Tight confinement of light in photonic cavities helps realize high optical intensity with strong field gradients. We designed a nanoscale resonator device based on a one-dimensional photonic crystal slot cavity. Our design allows for highly localized optical modes with theoretically predicted quality factors (Q factors) in excess of 10⁶ . The design was implemented experimentally both in a high-contrast refractive index system (silicon), as well as in medium refractive-index-contrast devices made from aluminum nitride. We achieved an extinction ratio of 21 dB in critically coupled resonators using an on-chip readout platform with loaded Q as high as 33,000. Our approach holds promise for ultrasmall optomechanical resonators for high-frequency operation and sensing applications.

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Wolfram H. P. Pernice, Chi Xiong, and Hong Tang "Photonic crystal dumbbell resonators in silicon and aluminum nitride integrated optical circuits," Journal of Nanophotonics 7(1), 073095 (16 April 2013). https://doi.org/10.1117/1.JNP.7.073095

Published: 16 April 2013

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