Eur. Phys. J. D (2022) 76: 50
https://doi.org/10.1140/epjd/s10053-022-00373-y

Regular Article – Optical Phenomena and Photonics

Tunable filter based on one-dimensional photonic crystal including nanocomposite material

¹ Basic Science Department, Higher Technological Institute, Tenth of Ramadan City, Egypt
² Department of Engineering Mathematics and Physics, Faculty of Engineering, Cairo University, Giza, Egypt

^d sel_naggar@hotmail.com

Received: 22 October 2021
Accepted: 22 February 2022
Published online: 15 March 2022

Abstract

In this work, we investigate the transmittance characteristics of one-dimensional ternary nanocomposite photonic crystals (PCs) by using the transfer matrix method. Our analysis is performed for both the transverse electric and the transverse magnetic polarized waves. We consider nanocomposite material consisting of silver nanoparticles embedded in a dielectric material. We show that the structure can block most of the visible light. In addition, we introduce a defect in the structure by two different methods. The first method is called mirror-symmetry and the second one is the conventional method where a defect layer is inserted in the middle of the PCs structure. The numerical results show that the defect mode arising in the photonic band gap can be adjusted by the incidence angle as well as the thickness of defect layer and the volume fraction. Therefore, the proposed structure is a good candidate to work as a tunable filter and a selective optical filter in the visible spectrum.