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Full optical logic gate of optic waveguide

A technology of optical waveguide and optical logic, applied in the field of innovative technology of all-optical logic gate devices, can solve the problems of only milliwatt level, high working voltage, single function, etc.

Inactive Publication Date: 2005-11-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Embodiment

[0019] The structure diagram of the present invention is as figure 1 As shown, there are several input waveguides that can input signal light pulses and control light pulses, several output waveguides and multimode interference regions (10), wherein the connection between the input waveguides and output waveguides is a multimode interference region ( 10), the entrance end of the multimode interference area (10) is connected to several input waveguides, and the exit end of the multimode interference area (10) is respectively connected to several output waveguides.

[0020] In this embodiment, the above-mentioned several input waveguides include at least three input waveguides (4) (5) (6), and the several output waveguides include at least three output waveguides (7) (8) (9). The entrance of the interference area (10) is connected to the three input waveguides (4) (5) (6), and the exit end of the multimode interference area (10) is respectively connected to the three output wave...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F3/00
Inventor 李宝军李章健陈志文
Owner SUN YAT SEN UNIV
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