Full optical logic gate of optic waveguide

Abstract

An all optical logical gate of light waveguide consists several input waveguide enabling to input signal and control light pulse, several output waveguide and multimode interference area. It is featured as connecting output waveguide to input waveguide by multimode interference area with its inlet end being connected with input waveguide and its outlet to output waveguide so output waveguide can output different logical gates of OK, NOR, NOT and NAND by placing different combinations of input waveguide in multimode interference area to form different interference states.

Description

1. Technical field: [0001] The invention relates to a passive optical waveguide all-optical logic gate device that realizes various logic operations on light wave signals and can be used in the fields of all-optical calculation, all-optical communication, integrated optical circuit, etc., and belongs to the innovative technology of all-optical logic gate devices. 2. Background technology: [0002] Monolithic integrated optical waveguide devices that can realize various logic gate functions for signal light in the near-infrared band have always been the key components required for all-optical computing, all-optical communication transmission systems, and integrated optical circuits. Many current optical logic gate devices are still controlled by electro-optic, which requires a high operating voltage. However, the all-optical logic gate devices that use the nonlinear effect of materials to realize the function of logic gates have relatively simple functions and require strong ...

AI Technical Summary

Problems solved by technology

Many current optical logic gate devices are still controlled by electro-optic and require high working voltage

However, the all-optical logic gate devices that use the nonlinear effect of materials to realize the function of logic gates have relatively single functions and require strong signal light, while the signal light intensity used in optical fiber communication is generally only on the order of milliwatts.

In addition, the currently used optical logic gate devices cannot simultaneously have the functions and characteristics of multiple logic gates and all-optical operation.

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