ABSTRACT
Photonic Filter is designed at 1.55 μm using double negative refractive index materials. Both paired nanorod (r.i is -0.3) and nano-fishnet structure with elliptical void (r.i is -4) are considered for comparative analysis. Electromagnetic wave propagation for both normal and oblique incidences (TE mode only) are considered for analysis purpose, and simulation results reveal that passband at the desired zone may be obtained by suitable choice of structural parameters and external conditions. Results also indicate that suitable choice of defect density enhances the filter performance with less ripple in passband; and smooth nature of stopband slopes, compare to that obtained for defect-free (ideal) structure. Results are important in designing optical filter at the desired spectrum.
