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An optical switching device based on waveguide matrix structure

A waveguide matrix and optical switching technology, applied in the field of optical communication, can solve the problems of CDC-ROADM miniaturization and low power consumption, huge waveguide size and graphic distribution area, etc., to improve module performance, reduce complexity, The effect of reducing the number

Active Publication Date: 2022-08-09
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the embodiments of the present invention is that the huge waveguide size and pattern distribution area will bring huge challenges to the subsequent coupling packaging, and it is likely that it will not be able to meet the trend of CDC-ROADM miniaturization and low power consumption

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  • An optical switching device based on waveguide matrix structure
  • An optical switching device based on waveguide matrix structure
  • An optical switching device based on waveguide matrix structure

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Embodiment 1

[0074]Embodiments of the present invention provide an optical switching device based on a waveguide matrix structure, such as image 3 As shown, the n×n optical switching device includes:

[0075] n+1 levels of optical switch components, wherein each level of optical switch components is composed of n optical switch units or 2n optical switch units;

[0076] Among them, in the first n-1-level optical switch components, each level of optical switch unit is equipped with a 1-level optical splitter component, and the optical splitter component is composed of n 1×2 optical splitters ;

[0077] The optical switch components of each stage are cascaded, the optical splitter components of each stage are cascaded, and the optical switch components of each stage are coupled with the optical splitter components of each stage.

[0078] The embodiment of the present invention adopts the technology of waveguide integration, optimizes the waveguide structure of the current mainstream optic...

Embodiment 2

[0122] This embodiment of the present invention provides a specific implementation for supporting the switch unit and the optical splitter in Embodiment 1. In the embodiment of the present invention, the switch unit and the optical splitter in the corresponding switch assembly can be designed with a waveguide chip structure, starting from the basic functional unit of the waveguide chip. In the embodiment of the present invention, the design structure of the waveguide chip is composed of two basic functional units, namely a 2×2 optical switch unit based on a semi-cascaded Mach-Zehnder interferometer (MZI for short) structure and an optical splitter based on a single 1×2 MZI structure. .

[0123] a. Optical switch unit

[0124] Generally, a single MZI structure consists of two input ports and two output ports, as well as two front and rear 3dB couplers. The optical power of the input optical field is equally divided into two parts in the first-stage coupler, and enters the sec...

Embodiment 3

[0132] In this embodiment of the present invention, the working mechanism of the optical switch unit and the optical splitter developed in the second embodiment is mainly explained at the level of the working principle.

[0133] The working principle of the beam splitter:

[0134] According to the spectroscopic principle of MZI, by adjusting the coupling phases θ1 and θ2 of the front and rear couplers and the phase difference ⊿Φ of the interference arm, the splitting ratio of the upper and lower output channels of the MZI can be adjusted, such as Figure 7 shown.

[0135] The working principle of the semi-cascaded MZI switch unit:

[0136] like Image 6 As shown, when the heating electrodes of the front and rear MZI are not working, the optical signal enters from the input port 1 and outputs from the output port 1; enters from the input port 2 and outputs from the output port 2. At this time, the MZI closes the optical signal of the input port 1, and the optical signal to t...

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Abstract

The invention relates to the technical field of optical communication, and provides an optical switching device based on a waveguide matrix structure. The n×n optical switching device includes: n+1-level optical switch components, wherein each level of optical switch components is composed of n optical switch units or 2n optical switch units; wherein, in the first n-1-level optical switch components , each level of optical switch unit is equipped with a 1-level optical splitter assembly, which is composed of n 1×2 optical splitters; the optical switch components of each stage are cascaded, The optical splitter components of each stage are cascaded, and the optical switch components of each stage are coupled with the optical splitter components of each stage. The invention can not only reduce the complexity of the optical switching unit, but also reduce the number of the cross points of the waveguide; it not only satisfies the miniaturized packaging requirements of the CDC-ROADM, but also improves the performance of the module.

Description

【Technical field】 [0001] The present invention relates to the technical field of optical communication, in particular to an optical switching device based on a waveguide matrix structure. 【Background technique】 [0002] At the level of specific business requirements for 5G development in the future, due to the exponential increase in the number of network nodes, network management and control will become a bottleneck. As the core system of network nodes, ROADM can realize optical layer direct connection between network nodes, which greatly reduces signal delay and meets the development direction of 5G. As the core node of the backbone network and the metropolitan area network, the ROADM system in the 5G era must simultaneously possess three characteristics: colorless, directionless, and contentionless. How to design the optical waveguide matrix structure in the optical switching unit is the key to ROADM's realization of the "three-none" feature, that is, CDC-ROADM. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00G02B6/293
CPCH04Q11/0005G02B6/29362H04Q2011/0007
Inventor 李迪徐晓辉胡毅
Owner GUANGXUN SCI & TECH WUHAN
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