Vol. 48, Issue 3, pp. 341-348

Vol. 48 Issue 3 pp. 341-348

Design of a novel photonic crystal 1.31/1.55 µm bi-band filter for near infrared application

Farah Lallam, Hadjira Badaoui, Mehadji Abri, Amal Fedaouche

Keywords

finite-difference time-domain (FDTD), photonic crystals, waveguide W1KA, selective filters

Abstract

A novel design of a double selective filter for integrated optics in two-dimensional photonic crystals operating at a wavelength of 1.31 and 1.55 μm is proposed in this paper. We focus particularly on filters transmission and selectivity enhancement. The two-dimensional photonic crystals filters are simulated by using a combination of three cascaded waveguides; these later are conceived by one missing row and with different rods radii for efficient filtering purpose. The properties of these photonic crystal structures are numerically investigated by using the two-dimensional finite-difference time-domain method and the numerical results are given for incident light wave having transverse electrical polarization. A final synthesized filter topology is presented and the maximum of transmission is found around 70% and 60% localized respectively near 1.31 and 1.55 μm wavelengths.

Vol. 48
Issue 3
Article No: 01
pp. 341-348

1.05 MB
OPTICA APPLICATA - a quarterly of the Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology