Properties of PC filters in one-dimensional photonic crystals containing defects
نویسندگان
چکیده
The properties of photonic crystal (PC) filters in one-dimensional photonic crystal (1D PC) containing a defect layer are studied theoretically using the transfer matrix method. The effect of thickness of defect layers is studied. It is shown that one defect mode and two defect modes appear inside the forbidden band gaps in its reflection spectra. By changing the thickness of the defect layer, the number and frequency of the defect modes can be tuned. Therefore, introducing a defect layer in 1D PCs provides possible method for various color filters. This may be useful in the design of bule-green color filters. Additionally, the method also showed that 20 nm is allowed for Ta2O5 and MgF2 interfacial roughness in our system.
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