16 April 2013 Photonic crystal dumbbell resonators in silicon and aluminum nitride integrated optical circuits
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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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Wolfram H. P. Pernice, Chi Xiong, 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 . Submission:
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