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Updated: Jan 25, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
Published on: February 4, 2018
Iterative design of multilayered dielectric microspheres with tunable transparency windows
Abstract:
Suspensions of microparticles dispersed in air or liquids are useful for designing media with desirable optical extinction properties within the visible or infrared spectrum. We describe here a numerical iterative optimization algorithm used to design multilayered concentric dielectric spheres with prescribed optical scattering properties. Our method integrates a computationally efficient rigorous electromagnetic solver, based on Mie theory, within an optimization loop to determine specific particle configurations that best meet a desired optical response. In particular, we show that this method can be used to design all-dielectric spherical particles that possess narrow tunable transparency windows while removing any angular dependency on the optical response.
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