Open AccessPlasmonic stop-band filter based on an MIM waveguide coupled with cavity resonators
Author(s) -
Imane Zegaar,
Abdesselam Hocini,
Djamel Khedrouche,
Hocine Ben Salah,
Hocine Bahri
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2240/1/012025
Subject(s) - resonator , finite difference time domain method , plasmon , band pass filter , bandwidth (computing) , stopband , filter (signal processing) , waveguide filter , optoelectronics , materials science , optics , waveguide , transmission (telecommunications) , physics , low pass filter , prototype filter , computer science , telecommunications , engineering , electrical engineering
In this study, we propose and simulate in the NIR region a tunable stop-band filter based on an MIM waveguide coupled to a triangular cavity. The transmission spectra of the filter are obtained using the R-Soft CAD software based on the two-dimension (2D) finite-difference time-domain (FDTD) method, which uses perfectly matched layers (PML) to absorb the outgoing energy fields. A stop-band plasmonic filter with a large bandwidth and high bandpass transmission is achieved by adding another triangular cavity resonator. One can also control the range filtered and the shift of the central wavelength by tuning the second triangular cavity parameters. This structure has important applications in highly integrated photonic circuits.