Optimum Design And Performance Analysis Of Integrated Optical Crossbar Network

With the increasing need of information,the constitute of high information processing system become very urgently in the information era of today.As the electrical interconnects is limited due to the cross-talk and losses electric links will not meet the need of high speed interconnection technology.Optics offers important advantages,it can connecte two nodes with high bandwidth,low power dissipation,little cross-talk and low latency.Nowadays free-space optical interconnection networks is one of the current topics in the world.But most of the optical interconnection networks are assembled from discrete elements,which are difficult to fixing, have high insert loss,and are sensitive to enviroment and so on.Thus, on the base of the integrated optical N×N crossbar network and its control algorithm this dissertation investigate some content about the optimum design and facture of integrated optical crossbar network as the followings:1.Analyse the theory of the integrated optical crossbar network.The theory is that the interconnection between two neighbor switch stages are formed based on both the phenomena of double refraction and internal double reflection of crystal,control the polarization state of light through the linearity electro-optic effect of crystal.Which can realize the function of network.In this paper,the crossbar networks with two kinds of configurations,normal incidence and oblique incidence.2.Based on the need of crystal size and device appliance,the two kinds of configutations of crossbar networks are designed optimum.For normal incidence configuration, the relations between network geometry and channel interval, half-wave voltage, channel numbers, crystal size, are discussed. As an optimum result,35°<θ<45°is proposed. For oblique incidence configuration, the relations between network geometry and half-wave voltage, the angle between o channel and e channel, o channel interval, e channel interval, channel numbers, crystal size, are discussed. At the same time, Fresnel reflection loss is considered. As an optimum result,35°<0<45°,-5°<αoi-<5°,γ=θare suggested.3.Mading a 3×3 crossbar network with LiNbO3.Which the size is 16mm×61mm×1mm.Electrode size is 1mm×16mm and 0 is 35°.Experimental result indicate that crossbar network can realize connect between arbitrary input and output.The waste is 40%,and the crosstalk is -14dB.Analysing the reason for waste and crosstalk.