Optical logic gate

Abstract

The invention relates to an optical logic gate, which comprises first optical input elements (I1 and I4), second optical input elements (I2 and I5), an optical logic arithmetic device and optical output elements (O1 and O2). The first optical input elements (I1 and I4) and the second optical input elements (I2 and I5) are used for receiving coherent light; and the optical logic arithmetic device performs logical operation on the input coherent light according to a logic function needed to be realized, and outputs an operation result via the optical output elements (O1 and O2). By the invention, pure optical logic operation is realized; since all the elements are optical elements, the introduction of electrical elements is avoided; and the signal switching rate of the optical logic gate ishigh.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to an optical logic gate. Background technique [0002] In the existing technology, the implementation of AND gate and XOR gate in logic operations mainly uses electrical signals as the signal carrier, while the research on optical logic devices such as optical logic AND gate and optical logic XOR gate is still immature. [0003] In optical digital computing, coherent beams of light are used as carriers of information. A coherent beam can be defined by amplitude A, wavelength λ, polarization direction θ, and phase to fully describe its state, Using the initial phasing identity ( The light intensity of linearly polarized light ↑ (assuming that all polarizations are in the y direction, that is, θ=90 degrees) at a fixed single wavelength (the same λ) with a standard amplitude (assuming A is 1) is all 0) to represent information 1, and no light intensity (I=0) represents informati...

AI Technical Summary

Problems solved by technology

Looking at the existing optical logic operation technology, there is no optical logic gate using optical coherence as the means of operation.

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