Open AccessDesign of a maximally flat optical low pass filter using plasmonic nanostrip waveguides
Author(s) -
Amir Hosseini,
Hamid Reza Nejati,
Yehia Massoud
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.015280
Subject(s) - optics , finite difference time domain method , plasmon , filter (signal processing) , optical filter , waveguide , materials science , cutoff frequency , low pass filter , optoelectronics , physics , computer science , computer vision
In this paper, we present a new optical range low pass filter based on plasmonic nanostrip waveguides. We calculate the characteristic impedance of plasmonic nanostrip waveguides and compare it with that of microstrip transmission lines. An optical range maximally flat low pass filter with subwavelength dimensions is designed based on the nanostrip waveguide structure. Finite-difference time-domain (FDTD) simulations of the designed optical range filter are presented, which demonstrate subwavelength light confinement as well as acceptable filter cutoff performance.