Design of a high-performance metal–insulator–metal plasmonic demultiplexer

Milad T. H. Azar; Mahdi Zavvari; Armin Arashmehr; Yashar Zehforoosh; Pejman Mohammadi

doi:10.1117/1.JNP.11.026002

19 April 2017 Design of a high-performance metal–insulator–metal plasmonic demultiplexer

Milad T. H. Azar, Mahdi Zavvari, Armin Arashmehr, Yashar Zehforoosh, Pejman Mohammadi

Author Affiliations +

Journal of Nanophotonics, Vol. 11, Issue 2, 026002 (April 2017). https://doi.org/10.1117/1.JNP.11.026002

Abstract

We propose a four-channel plasmonic demultiplexer based on gold–air–gold structure. To do so, an add-drop filter is first proposed consisting of an H-shaped resonant cavity, which is designed to drop a distinct wavelength to other waveguides. Since the selected wavelength depends on the structural parameters of the resonant cavity, two- and four-channel demultiplexers are presented by adding H-shape cavities with different sizes. The results of numerical simulations show that for the total structure, spacing about 50 nm and an average transmission more than 95% for channels are obtained. The proposed device exhibits high-transmission efficiency along with the low channel spacing. The average calculated cross talk is calculated about −18.6 dB.

Citation Download Citation

Milad T. H. Azar, Mahdi Zavvari, Armin Arashmehr, Yashar Zehforoosh, and Pejman Mohammadi "Design of a high-performance metal–insulator–metal plasmonic demultiplexer," Journal of Nanophotonics 11(2), 026002 (19 April 2017). https://doi.org/10.1117/1.JNP.11.026002

Received: 25 November 2016; Accepted: 31 March 2017; Published: 19 April 2017

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