Theoretical analysis of near infrared optical Performance long wave pass Nano layered edge filter

Numerical simulations have been successfully applied to design and synthesize multilayer optical thin layers with a predetermined spectral response. In this work, the theoretical study for designing  dielectric Nano layered edge filters have polarization effects at oblique incidence for   NIR region of the electromagnetic spectrum between wavelength   1200-1800 nm is presented at a range of incidence angle have been designed. The materials used in this study are represented by (SnO2), (SiO2), and BK7 glass as a substrate which used in the designing non-polarizing edge filter alternating on the refractive index. A new stack structure is proposed to design the non-polarization long-wave-pass thin layered edge filter. Using the form of stack air [0.8 (0.75H L 0.5H) ^10 0.8(0.25H L 0.4H) ^5] Glass as the spacer layers. The results obtained specifications include the effect of an increase in the incidence angle in optical performance besides shifted in the central wavelength of interference   and plane electromagnetic waves. This simulation is a time and money-saving matter, reducing the number of necessary thin-film depositions and avoiding a try and error optimization strategy.