Effect of Defect on Bandpass Filter Characteristics of Ternary Photonic Crystal for Normal Incidence of E.M Wave
In this paper, effect of defect density is analyzed on transmittance characteristics of ternary photonic crystal under normal incidence of electromagnetic wave. Analysis is carried out using transfer matrix technique, and layer dimensions are varied within practical limit to tailor the filter characteristics around 1.55 μm for desired blueshift or redshift. Normalized defect density is tuned within feasible limit to study the modulation in filter performance. Result suggests that with intentional incorporation of defect within tolerable range, the structure behaves as better Butterworth characteristics in terms of higher noise rejection and lower passband ripple than that obtained for ideal configuration.
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Document Type: Research Article
Publication date: June 1, 2017
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