| In this paper, the evolution of two and three co-propagating optical beams in the little obliquity from propagating axes , governed by the Snyder-Mitchell model (namely a new linear model), is discussed in the strong nonlocal media, and an exact analytical solution of higher-order mode to the single beam is obtained.The paper is organized as follows:Chapter 1, we present an overview of recent advances in the research of optical beam propagating in the strong nonolocal nonlinear media.Chapter 2, we simplify NNLSE to a new linear model under the condition of strong nonlocality and obtain the exact analytical solution of high-order mode for single beam propagating in it. It is found for the first time that the necklace-ring spatial soliton exists in the strong nonlocal media in the Cartesian coordinate , The exact analytical solutions with Hermite-Gaussian and Laguerre-Gaussian forms are obtained.Chapter 3, Two and three co-propagating optical beams which are governed by Snyder-Mitchell mode with the same frequency and polarization in the 1+1D strong nonlocal media are discussed. An exact analytical solutions of two and three co-propagating optical beams in the little obliquity from propagating axes are obtained.The lately academic project of all-optical switching and logic gating are put forward , such as XNOR gating and NOR gating . Optimize of components to basic photo communication is involved in addition .The main achievement of the paper is that the exact analytical solutions with Hermite-Gaussian and Laguerre-Gaussian forms are obtained. It is found for the first time that the necklace-ring spatial solitons exist in the strong nonlocal media An exact analytical solutions of two and three co-propagating optical beams in the little obliquity from propagating axes are obtained.The lately academic project of all-optical switching and logic gating are put forward .
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