Effect of Incidence Angle on Optical Bandwidth in Ternary Photonic Crystal for Filter Application
Optical bandwidth of ternary photonic crystal based Butterworth filter is computed for polarized incidence of electromagnetic wave; and effect of incidence angle and structural parameters are studied within lower range on the filter performance. Result is compared with that obtained for normal incidence. Transfer matrix technique is adopted for calculation; and SiO2/air/TiO2 material system is considered for simulation purpose. Simulated findings in favor of p-polarized wave incidence for varying incidence angle owing to higher bandwidth and less ripple in passband for filter application.
KeywordsTernary photonic crystal Optical bandwidth Angle of incidence Butterworth filter Structural parameters
- 9.Rojas, J.A.M., Alpuente, J., L´opez-Esp´i, P., Garc´ia, P.: Accurate model of electromagnetic wave propagation in unidimensional photonic crystals with defects. J. Electromag. Waves Appl. 21, 1037–1051 (2007)Google Scholar
- 10.Mukherjee, S., Roy, A., Deyasi, A., Ghosal, S.: Dependence of photonic bandgap on material composition for two-dimensional photonic crystal with triangular geometry. Found. Front. Comput. Commun. Electr. Eng. (CRC Press), chapter 52, 259–263 (2016)Google Scholar
- 23.Gharaati, A., Mohamadebrahimi, L., Roozitalab, Z.: Photonic band gap in negative ternary refractive indices of two-dimensional photonic crystal. Optica Applicata XLIV, 637–648 (2014)Google Scholar
- 24.Sharma, S., Kumar, R., Singh, K.S., Jain, D.: Design of an omnidirectional reflector using one dimensional ternary photonic crystal. Int. J. Eng. Tech. Res. 90–93 (2014)Google Scholar