2003/12/18 by Рамаз Хомерики, Ramaz Khomeriki · 5 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Band gap #Beam (structure) #Beam propagation method #Boundary value problem #Condensed matter physics #Coupling (piping) #Materials science #Nonlinear Photonic Systems #Nonlinear system #Omega #Optics #Photonic Crystal and Fiber Optics #Physics #Propagation constant #Quantum mechanics #Refractive index #Telecommunications #Transmission (telecommunications) #Waveguide #cond-mat
paper · pdf · doi:10.1103/physrevlett.92.063905
published as Phys. Rev. Lett., v.92, 063905 (2004). · 4 pages, 6 figures. Phys. Rev. Lett. (in press)
arxiv created 2003/12/18 · openalex publication_date 2004/02/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The effect of nonlinear transmission in coupled optical waveguide arrays is theoretically investigated and a realistic experimental setup is suggested. The beam is injected in a single boundary waveguide, linear refractive index of which (n(0)) is larger than refractive indexes (n) of other identical waveguides in the array. Particularly, the effect holds if omega(n(0)-n)/c>2Q, where Q is a linear coupling constant between array waveguides, omega is a carrier wave frequency, and c is a light velocity. Numerical experiments show that the energy transfers from the boundary waveguide to the waveguide array above a certain threshold intensity of the injected beam. This effect is due to the creation and the propagation of gap solitons in full analogy with a similar phenomenon in sine-Gordon lattice [Phys. Rev. Lett. 89, 134102 (2002)]].