The effect of cells' radius on optical filter output spectrum based on photonic crystals

Authors

Abstract

In this article, the effect of cells' radius on the behavior of wavelength switching optical filter and
the effect of the radius of the optical filters' key characteristics such as wavelength resonance on
an optical filter based on photonic crystals, have been investigated. Currently, the most common
applied mechanism for designing optical filter based on photonic crystals is using two
mechanisms such as (a) The resonant cavities and (b) Ring resonators. The applied mechanism in
optical filter used in this article is the resonant cavities. In this filter, filtering act is operated by
using cavity located between output Waveguide and input waveguide and it has been used to
design filter at the first extracted band structure and we have applied forbidden band photonic
based-crystal by using PWE method. Then, the calculations related to filter output spectrum were
carried out by using an FDTD method. Thus, the effect of cells' radius on the behavior of
wavelength switching optical filter has been investigated in this study.

Keywords


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