https://doi.org/10.1140/epjd/s10053-022-00466-8
Regular Article – Plasma Physics
Designing externally controllable optical filters with two-dimensional magnetized plasma photonic crystals
Department of Physics, Azarbaijan Shahid Madani University, Tabriz, Iran
Received:
23
April
2022
Accepted:
21
July
2022
Published online:
25
August
2022
This study proposes a two-dimensional plasma photonic crystal structure to design a tunable optical filter by changing the plasma characteristics or applying an external magnetic field. The structure is composed of two-dimensional arrays of dielectric rods with a radius of b which is defected by a row of plasma rods with a radius of b/2 in the middle of the structure. The optical properties of the structure are simulated using the finite-difference time-domain (FDTD) method. The results indicate that with the rise in the electron density of the plasma rods and changes in the intensity and direction of the applied magnetic field, which is externally controllable, the appeared defect mode in the photonic bandgap, for a TE (Transverse Electric) polarized incident electromagnetic beam, can be easily modulated. This ability suggests that the proposed structure is a good candidate for designing externally tunable optical filters which have a lot of applications.
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