High-contrast photonic crystal or, nor and xor logic gate

Abstract

The invention discloses a high-contrast photonic crystal or, nor and xor logic gate. The high-contrast photonic crystal or, nor and xor logic gate is a six-port two-dimensional photonic crystal and comprises a nonlinear cavity unit and a cross-shaped waveguide logic gate unit. A high-contrast photonic crystal or logic gate is composed of a reference light input end, two idle light output ends, two system signal input ends and a system signal output end. A high-contrast photonic crystal nor logic gate is composed of two reference light input ends, two idle light output ends, a system signal input end and a system signal output end. A high-contrast photonic crystal xor logic gate is composed of a reference light input end, two idle light output ends, two system signal input ends and a system signal output end. The cross-shaped waveguide logic gate unit is provided with different input or output ports, and the nonlinear cavity unit is connected with the cross-shaped waveguide logic gate unit in a coupled mode. According to the structure, the high-contrast photonic crystal or, nor and xor logic gate and other photonic crystal components are easy to integrate.

Description

technical field [0001] The invention relates to two-dimensional photonic crystals, nonlinear optics, and optical logic gates. Background technique [0002] In 1987, E. Yablonovitch of Bell Laboratories in the United States was discussing how to suppress spontaneous emission, and S. John of Princeton University was discussing the photonic region and independently proposed the concept of photonic crystal (Photonic Crystal). A photonic crystal is a material structure in which dielectric materials are periodically arranged in space, and is usually an artificial crystal composed of two or more materials with different dielectric constants. [0003] With the introduction and in-depth research of photonic crystals, people can more flexibly and effectively control the movement of photons in photonic crystal materials. In combination with traditional semiconductor technology and integrated circuit technology, people are making rapid progress towards all-optical processing through th...

AI Technical Summary

Problems solved by technology

These optical logic devices have the common disadvantage of large volume for the development of large-scale integrated optical circuits

With the improvement of science and technology in recent years, people have also developed quantum optical logic devices, nanomaterial optical logic devices and photonic crystal optical logic devices. These logic devices all meet the size requirements of large-scale photonic integrated optical circuits, but for modern In terms of manufacturing technology, quantum optical logic devices and nanomaterial optical logic devices have great difficulties in manufacturing, while photonic crystal optical logic devices have a competitive advantage in manufacturing technology

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