Realization of Monochromatic Filter in Visible Range: An Application to Optical Embedded System

Abstract

This paper explores the realization of three monochromatic filters in the visible range using silicon grating structure to control the electrical circuit through an Arduino development board in conjunction with RGB sensors. To begin with, a RGB separator is used to split the total visible light spectrum range into three individual spectrum range for red, blue, and green colors which further processed through three RGB monochromatic filters to obtain the single wavelength of light like 462.7 nm for blue, 568.7 nm for green, and 641.7 nm for red color. These individual color signal wavelengths are finally processed through the Arduino development board using RGB sensors to activate the corresponding electrical circuit which leads to an optical embedded application. Plane wave expansion (PWE) simulation method and Matlab Simulink are employed to acquire the reflectance characteristics of the photonic filters and to model the entire structure, respectively. Finally regression analysis is made in this research to disclose the variation between wavelength and length of the grating.