Non-blocking expandable multistage photoswitch array and working method thereof

A technology of switch array and working method, which is applied in the field of optical communication, and can solve problems such as poor connection reliability, interference, and signal loss

Active Publication Date: 2012-10-17
SHANGHAI HUIJUE NETWORK COMM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The higher the number of stages in the multi-level interconnection network, the greater the delay in connection establishment and signal t

Method used

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  • Non-blocking expandable multistage photoswitch array and working method thereof
  • Non-blocking expandable multistage photoswitch array and working method thereof
  • Non-blocking expandable multistage photoswitch array and working method thereof

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Embodiment 1

[0067] see image 3 , this embodiment 1 is a simplified structure, in embodiment 1, N=2, k=3. In other words, both the switching unit A and the switching unit C are 2×2 small optical switches, and the switching unit B is a 3×3 small optical switch. Its connection mode and control principle have been described in detail above, and will not be repeated here. And by image 3 It can be seen that in Embodiment 1, seven small optical switches (2×2 and 3×3 specifications) form a multi-level optical switch array that can be expanded from 2×2 to 6×6.

Embodiment 2

[0069] see Figure 4 , this embodiment 2 is another simplified structure, in embodiment 2, k=2. In other words, the switching unit B uses 2×2 small optical switches. Its connection mode and control principle have been described in detail above, and will not be repeated here. And by Figure 4 It can be seen that in Embodiment 2, small optical switches (2×2 and N×N specifications) are combined to form a large (2N×2N specification) non-blocking expandable multi-stage optical switch array.

[0070] It can be known from the above technical solution that in the multi-stage optical switch array provided by the present invention, the specifications of the switching unit A and the switching unit C are the same, and the entire switch array has a modular structure. In the early stage of network construction, the scalable scale of the entire switch array is determined by selecting the specification of switching unit B, and the number of switching units A and C required by the existing ...

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Abstract

The invention belongs to the technical field of optical communication, and particularly relates to a non-blocking expandable multistage photoswitch array and a working method thereof. The multistage photoswitch array is provided with kN input terminals and kN output terminals, and comprises a packet network with kN input terminals and kN output terminals and a switching network consisting of k N*N non-blocking switching units A. The kN output terminals of the packet network are divided into k output groups. Any one input terminal selected can be connected to the output terminal of any one group of output groups. The N output terminals on each output group are connected with the N input terminals on the switching unit A orderly. The invention has the advantages that a novel network topological structure is put forward, wherein the structure combines the characteristic that mono-stage switching network is simple to control and the advantages of multistage switching network which is low in cost and complexity of hardware. A syncretic topological structure is put forward. The N*N structure is selectively expanded to the kN*kN structure agilely according to the current network traffic. The non-blocking expandable multistage photoswitch array provided by the invention is simple in swapping control and has strict non-blocking characteristics.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a non-blocking expandable multi-stage optical switch array and a working method thereof. Background technique [0002] Optical communication technology has been greatly developed since its birth in the 20th century. At present, the transmission capacity on the link in the optical network has exceeded the Tbit / s level, while the node processing capacity is mostly at the Gbit / s level. Therefore, the main bandwidth bottleneck of optical networks at this stage is the limitation of electronic processing capabilities in the optical / electrical / optical processes at nodes. To solve this problem, an optical cross-connect (OXC) for optical domain processing of signals at nodes is proposed. The optical cross-connect has multiple standard optical interfaces, which can controlly connect any optical fiber (or a certain wavelength signal) at the input end to any optic...

Claims

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Application Information

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IPC IPC(8): H04Q11/00
Inventor 沈建华万争胡小辉黄建培许荣刚
Owner SHANGHAI HUIJUE NETWORK COMM EQUIP
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