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All-optical logic gates using nonlinear elements

A non-linear element, optical logic technology, applied in logic circuits using specific components, logic circuits using optoelectronic devices, optical components, etc., can solve problems such as propagation loss preventing optical devices from cascading

Inactive Publication Date: 2011-10-26
COVEYTECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] As signals propagate through optical devices, propagation loss becomes a significant issue that often prevents cascading of optical devices

Method used

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  • All-optical logic gates using nonlinear elements
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  • All-optical logic gates using nonlinear elements

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Embodiment Construction

[0041] The present invention will now be described in more detail with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this description will satisfy applicable legal requirements. Like numbers refer to like elements hereinafter.

[0042] definition

[0043] "Downstream" refers to a location or element further along the path of light transmission relative to a reference point. It can also be used to refer to the direction of propagation of light away from a reference point in an optical circuit.

[0044] "OFF", "LOW" or "0" means that the optical signal has a lower amplitude or logic level.

[0045] "On", "High" or "1" means that the optical signal has a high amplitude or logic level.

[0046] "Or" broadly means any, some, or all o...

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Abstract

An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch.

Description

[0001] This application is a divisional application of a Chinese patent application filed on October 14, 2008, with the application number 200680054226.3 and the title of the invention "All-optical logic gate using nonlinear elements". The international filing date of the parent application is December 6, 2006, and the international application number is PCT / US2006 / 046507. technical field [0002] The present invention relates to optical devices for use as all-optical logic gates. More specifically, digital optical signals are combined and provided to nonlinear elements, such as optical resonators or cavity switches, whose resonant frequency is tuned to produce the desired logic output signal. Background technique [0003] In electronic equipment, logic gates made of transistors form the basic elements of digital circuits. The gates receive a voltage-based input and produce a voltage-based output signal corresponding to a desired logic function. [0004] In recent years, t...

Claims

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Application Information

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IPC IPC(8): G02F3/00
CPCG02B6/1225G02B6/125G02B6/305G02F3/00G02F2202/32G02F2203/15G02B6/10
Inventor 约翰·卢瑟·科维
Owner COVEYTECH LLC
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