Enhancement of Extraordinary Optical Transmission in a Double Heterostructure Plasmonic Bandgap Cavity |
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Authors: | Roberto Marani Valeria Marrocco Marco Grande Giuseppe Morea Antonella D??Orazio Vincenzo Petruzzelli |
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Institution: | (1) Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, via Orabona 4, 70125 Bari, Italy; |
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Abstract: | In this paper, a novel plasmonic bandgap cavity inducing the enhancement of extraordinary optical transmission is presented.
Numerical simulations have been performed to model a free-standing structure made of a one-dimensional periodic arrangement
of gold strips. Two different values of the lattice constant have been properly chosen to realize a double heterostructure-like
cavity to accomplish extraordinary optical transmission assisted by the formation of a plasmonic bandgap in the adjacent regions.
Numerical results prove the capability of this optical device to efficiently transmit input light beams with far-field transmission
values close to 100% due to the excitation of surface plasmon polariton resonant modes. |
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