Experimental realization of plasmonic filters for multispectral and dual-polarization optical detection

Zu-Po Yang, Shawn Yu Lin*

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We report the design and implementation of a new class of plasmonic filters that are both wavelength and polarization selective. The plasmonic filter consists of a five-layer metallic photonic crystal structure and operates inside the photonic bandgap regime. We show that by manipulating the middle layer geometry alone, it is possible to tune the Fabry-Perot resonance over a broad spectral range (λ = 1.25 to 1.63 μm) and in a monolithic fashion. Furthermore, we show that the resonance has a definite polarization character that is determined by the orientation of the first layer grating. The plasmonic filter may be integrated with an array of photodetectors for high-throughput spectral and Polarimetric imaging applications.

Original languageEnglish
Pages (from-to)3893-3895
Number of pages3
JournalOptics Letters
Volume34
Issue number24
DOIs
StatePublished - 15 Dec 2009

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