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Abstract
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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.
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