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Journal of Nanophotonics

Photonic crystal dumbbell resonators in silicon and aluminum nitride integrated optical circuits
Author(s): Wolfram H. P. Pernice; Chi Xiong; Hong Tang
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Paper 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 10 6 . 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.

Paper Details

PDF: 9 pages
J. Nanophoton. 7(1) 073095 doi: 10.1117/1.JNP.7.073095
Published in: Journal of Nanophotonics Volume 7, Issue 1, January 2013
Show Author Affiliations
Wolfram H. P. Pernice, Yale Univ. (United States)
Chi Xiong, Yale Univ. (United States)
Hong Tang, Yale Univ. (United States)

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