Open AccessLight propagation through a PT-symmetric photonic-crystal
Author(s) -
Vladimir V. Konotop,
B. I. Mantsyzov
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.026146
Subject(s) - optics , physics , slab , scattering , reflection (computer programming) , photonic crystal , total internal reflection , grating , negative refraction , guided mode resonance , transmission coefficient , symmetry (geometry) , transmission (telecommunications) , diffraction grating , refractive index , geometry , electrical engineering , mathematics , engineering , geophysics , computer science , programming language
Light propagation through a finite-width periodically modulated layer obeying parity-time (PT) symmetry is considered. We consider the configuration when the resonant conditions of mode coupling by the grating are satisfied. It is shown that the dependence of the transmission and reflection coefficients on the slab width has resonant character featuring strong amplification of reflected and transmitted waves with negative angles. The dependence of the scattering data on the gain-and-loss intensity also feature strong resonances near the PT-symmetry breaking point, when the slab strongly amplifies waves reflected and transmitted with negative angles, provided the incident wave has a positive angle of incidence.