Design and synthesis of a modified band-pass optical filter

Abstract

The reflection and transmission coefficients of two-component and three-component dielectric multilayered periodic structures (2CODMS and 3CODMS) are derived using the transfer matrix method. The width of the high reflectance zone in the case of two- and three-component systems is derived and computed using suitable parameters. Numerical calculations for long- and short-wavelength cutoff band-pass filters of various structures are shown in a three-component system. Comparison is also done for 2CODMS for long- and short-wavelength cutoff filters. Spectral properties of interference reflection filters of the type [G(XY)A], whose components represent long-wavelength cutoff [X] and short-wavelength cutoff [Y], are also studied. The reflection and transmission bandwidth of the high reflectance zone is presented. Optimization is done in three-component systems to make it suitable for ideal long- and short-wavelength band-pass filters. © 2004 MAIK "Nauka/Interperiodica".