2012/05/09 by Yongyao Li, Li, Yongyao, Wei Pang +6
Physics and Astronomy · #FOS: Physical sciences #Nonlinear Photonic Systems #Optics (physics.optics) #Pattern Formation and Solitons (nlin.PS) #Photonic Crystals and Applications #Quantum optics and atomic interactions #nlin.PS #physics.optics
paper · pdf · doi:10.48550/arxiv.1205.1899
9 pages, 6 figures and 26 references; Physical Review A, in press
arxiv created 2012/05/09 · openalex publication_date 2012/05/09 · arxiv updated 2012/05/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study two-component solitons and their symmetry-breaking bifurcations (SBBs) in linearly coupled photonic systems with a spatially inhomogeneous strength of the coupling. One system models an inverted virtual photonic crystal, built by periodically doping the host medium with atoms implementing the electromagnetically induced transparency (EIT). In this system, two soliton-forming probe beams with different carrier frequencies are mutually coupled by the EIT-induced effective linear interconversion. The system is described by coupled nonlinear Schrödinger (NLS) equations for the probes, with the linear-coupling constant periodically modulated in space according to the density distribution of the active atoms. The type of the SBB changes from sub- to supercritical with the increase of the total power of the probe beams, which does not occur in systems with constant linear-coupling constants. Qualitatively similar results for the SBB of two-component solitons are obtained, in an exact analytical form, in the model of a fused dual-core waveguide, with the linear coupling concentrated at a point.