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Array waveguide raster large scale optical exchanger and application method

An arrayed waveguide grating and switch technology, which is applied in the field of optical fiber communication networks, can solve the problems of network security problems that cannot be solved structurally, and achieves the effects of cheap equipment, high service quality, and easy capacity expansion.

Inactive Publication Date: 2007-07-18
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, people have proposed several optical switching modes (such as optical branch switching, optical burst switching, etc.), but none of them can solve the security problem of the network structurally.

Method used

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  • Array waveguide raster large scale optical exchanger and application method

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1: The present invention implements fine-grained switching on wavelengths, and uses it to perform cell switching. Figure 1 shows a schematic diagram of a fine-grained switching based on arrayed waveguide gratings and linear wavelength converters.

[0016] The situation of the access of the external end office of the cell: the data from the external network enters the switch based on the arrayed waveguide grating of the cell, and according to the receiving port of the destination user, the arbitrary wavelength of the input signal is converted to on the destination wavelength, thereby completing non-blocking switching between cells.

[0017] Situation that users in the cell send data: If the data of the users in the cell is sent to other users in the cell, it is directly exchanged through the arrayed waveguide grating switch. If the data of the cell user is sent to other users outside the cell, it will enter the external network through the micro switch array....

Embodiment 2

[0018] Embodiment 2: The present invention implements fine-grained switching on wavelengths, and uses it to perform cell switching. Figure 2 presents a schematic diagram of a fine-grained switching based on arrayed waveguide gratings and tunable lasers.

[0019] The situation of the access of the external end office of the cell: the data from the external network enters the switch based on the arrayed waveguide grating in the cell, and according to the receiving port of the destination user, the non-blocking switching between the cells is completed through the micro switch array and the arrayed waveguide grating.

[0020] Situation of data sent by users in the cell: If the data of the cell user is sent to other users in the cell, the target wavelength is selected by the user's own tunable laser and directly exchanged through the arrayed waveguide grating switch. If the data of the cell user is sent to other users outside the cell, it will enter the external network through the...

Embodiment 3

[0022] An arrayed waveguide grating large-scale optical switch is composed of two or more arrayed waveguide gratings, multiple sets of linear wavelength converters and the like.

[0023] An application method of an arrayed waveguide grating large-scale optical switch is as follows:

[0024] 1) N×N multi-channel arrayed waveguide grating: the current multi-channel arrayed waveguide grating technology is quite mature, but N is still too small (only dozens of channels), and the number of arrayed waveguide grating channels applied in the present invention should be within More than 100, which is equivalent to the number of users in the cell. High-density multi-channel arrayed waveguide gratings will soon be realized.

[0025] 2) Linear all-optical wavelength converter: There are many methods of wavelength conversion, most of which are realized by nonlinear fiber optics principles (such as four-wave mixing, cross-phase modulation, etc.), which require high optical power. The powe...

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Abstract

This invention relates to a large scale optical exchanger of array waveguide gratings and its application, in which, a large scale exchanger is composed of two or multiple array waveguide grating and multiple-set of linear wave length converters or adjustable lasers, and the application method includes: 1, applying NxN array waveguide gratings of over 100 channels, 2, applying linear total light wave length converters or adjustable lasers, 3, the two array waveguide gratings are connected, which utilizes the combination of multiple high density multi-channel array waveguide gratings and linear wavelength converters to realize the exchange of users of local areas and backbone networks.

Description

technical field [0001] The invention is applied to an optical fiber communication network to realize the exchange between users in a cell, and relates to an arrayed waveguide grating large-scale optical switch and an application method. Background technique [0002] Communication from electricity to light is a revolution. Optical communication is composed of optical transmission and optical switching. At present, optical transmission technology has reached a very high level. Due to the low price of optical fiber, the enormous transmission capacity and the rapid development of optical communication technology, optical fiber transmission has been able to meet the needs of society and even exceed the current needs of human beings. However, the exchange is electrical exchange, and its exchange capacity is very limited. A large amount of high-speed information transmitted by light needs to be converted into electricity first, then exchanged by routers, and then from electricity t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q3/52H04Q11/00H04B10/12H04B10/25
Inventor 简水生曹继红卢丹陈明陈勇
Owner BEIJING JIAOTONG UNIV
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