Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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By C.-C. Liu, Y.-H. Chang, T.-J. Yang, and C.-J. Wu

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A narrowband reflection and/or transmission filter made of heterostructured multilayer with two different ultrathin metallic films is proposed. The multilayer structure is a cascaded system that is formed by using two narrowband reflection-and-transmission filters. Each individual filter is made of an ultrathin metal film in front of a planar Fabry-Perot resonator. Using the transfer matrix method in a stratified system, the optical filtering properties are theoretically investigated and analyzed. It is found that the reflection peak at the design wavelength in the original individual filter becomes a dip in the heterostructured filter. The role played by the stack number of Bragg reflector in the design of narrowband filter is also clearly elucidated.

C.-C. Liu, Y.-H. Chang, T.-J. Yang, and C.-J. Wu, "Narrowband filter in a heterostructured multilayer containing ultrathin metallic films," Progress In Electromagnetics Research, Vol. 96, 329-346, 2009.

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