Abstract

In this paper, engineering the optical characteristics of aluminum nanoring arrays has been investigated with the aim of achieving a practical design approach to the realization of dual-mode plasmonic color filters. In addition to designing a set of subtractive and additive color filters with appropriate properties, an improved approach has also been proposed in order to design different additive/subtractive filters at arbitrary wavelengths. The proposed structures show great optical efficiencies while offering narrowband characteristics and a good color purity. They are CMOS-compatible, cost-effective, easy to fabricate, highly tunable, and polarization insensitive. Moreover, they offer potential applications in displays, CMOS image sensors, color printing, and multispectral imaging.

© 2018 Optical Society of America

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