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Effect of Defect on Bandpass Filter Characteristics of Ternary Photonic Crystal for Normal Incidence of E.M Wave

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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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Keywords: BANDPASS FILTER; DEFECTED PHOTONIC CRYSTAL; NOISE REJECTION; NORMAL INCIDENCE; OPTICAL BANDWIDTH; PASSBAND RIPPLE; TERNARY STRUCTURE

Document Type: Research Article

Publication date: June 1, 2017

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  • Materials Focus is a multidisciplinary peer-reviewed journal with a very wide-ranging coverage, consolidates fundamental and applied research aspects in all areas of science and engineering of novel advanced materials including their synthesis, processing, spectroscopy, properties and device applications. The journal publishes full research papers, timely review articles, and short communications of important new scientific findings, encompassing all fundamental and applied research aspects of emerging advanced materials.
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