N*N optical switch matrix capable of inhibiting crosstalk and signal transmission method of matrix

Abstract

The invention relates to an N*N optical switch matrix capable of inhibiting crosstalk and a signal transmission method of the matrix. The optical switch matrix comprises N input ends, N output ends and N2 optical switch units, the N2 optical switch units are positioned between the N input ends and the N output ends, and are connected in a crossed manner, and the initial state of each optical switch unit is set as a crossed transmission state; and when it is required to connected the ith input end with the jth output end in the optical switch matrix, the (j,i)th optical switch unit in the matrix is set as a straight-through transmission state, and all other optical switch units in the ith row and the jth column in the optical switch matrix are kept in the crossed transmission state.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an electro-optical silicon-based waveguide N*N optical switch matrix with crosstalk suppression and a signal transmission method thereof. Background technique [0002] At present, there are many technical approaches for the realization of optical switches, one of which is typical interferometric optical switch technology. Electro-optic silicon-based waveguide optical switch is a typical interferometric optical switch that uses the plasma dispersion effect of silicon to modulate the refractive index. Compared with other optical switch technologies, the switch has outstanding advantages. However, while using the plasmonic dispersion effect of silicon to modulate the refractive index of silicon, it will be accompanied by parasitic absorption loss. The optical power in the optical switch is no longer maintained equal, and there is always a situation where the "off" sta...

AI Technical Summary

Problems solved by technology

The disadvantages are: limited by the physical properties of the device, it is not ideal, the cost of the device increases, and the complexity of control increases, which is not conducive to the realization of large-scale cascaded optical switch arrays

The disadvantage is that although the network topology and the characteristics of the DWDM system are comprehensively considered, the complexity of the network nodes and the increase in the number of passive devices increase the cost of a single network node, which is also not conducive to large-scale cascaded optical switches. Implementation of the matrix

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