Eur. Phys. J. D (2015) 69: 95
https://doi.org/10.1140/epjd/e2015-50822-4

Regular Article

Angular and polarization dependence of all optical diode in one-dimensional photonic crystal

¹ Department of Physics, Azarbaijan Shahid Madani University, Tabriz, Iran
² Research Group of Processing and communication, Azarbaijan Shahid Madani University, Tabriz, Iran
³ Atomic and Molecular Group, Department of Physics, Yazd University, P.O. Box 891995-741, Yazd, Iran

^a e-mail: k-jamshidi@azaruniv.edu

Received: 16 November 2014
Received in final form: 24 February 2015
Published online: 2 April 2015

Abstract

The effect of the incident angle on all-optical diode (AOD) efficiency in a one-dimensional photonic crystal structure (1DPC) for TE and TM polarizations was studied. An asymmetric hybrid Fabry Perot resonator type 1DPC structure composed of linear and nonlinear materials was considered in this communication. The nonlinear transmission curves around the defect mode resonant frequency inside the photonic band gap for both TE and TM polarizations at different incident angles, from left to right (L-R) and right to left (R-L) incidences, are illustrated. Results showed that with increasing the incident angle, AOD performance efficiency increases only for TM polarization. The AOD efficiency increased to 80% for an incident angle of 60 degrees because of the dynamical shifting of the defect mode peak frequency caused by the intensity-dependency of the nonlinear layer refractive index along the z-axes. For TE polarization, the z-component of the electric field remained constant for all incident angles. The results of this study can be important in optical data communications and information analysis in all-optical integrated circuits.