Tailored scaling: a possibility to improve the performance of ultra-wide continuously tunable photonic devices
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We studied the effect of scaling the size of DBR-based micromechanical tunable vertical micro-cavity devices based on electro-mechanical model calculations. An investigation that results in a scaling in such a way that the end device replicates the same electro-mechanical tuning characteristic as the original is reported. A comprehensive FEM analysis based on the Mindlin plate theory shows a marked improvement in the tuning delay as well as the structural and performance stability by downscaling. The tuning delay decreased by 66%, and the resonant frequencies increased by 74% by scaling down by a factor of three. These coupled with the reduced peak amplitude of the transient response of the scaled down device point to an improved stability.
KeywordsCavity Length Mindlin Plate Electrostatic Actuation Tuning Performance Dense Wavelength Division Multiplex
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