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Optical switching device, redirection method, reconfigurable optical add drop multiplexer and reconfigurable optical add drop multiplexer system

A technology of optical switching and redirection, applied in the direction of light guides, optics, instruments, etc., can solve the problems of increasing AWG and spatial optical coupling insertion loss, etc.

Active Publication Date: 2021-12-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, setting the AWG in the WSS will increase the insertion loss of the coupling between the AWG and the space optics

Method used

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  • Optical switching device, redirection method, reconfigurable optical add drop multiplexer and reconfigurable optical add drop multiplexer system
  • Optical switching device, redirection method, reconfigurable optical add drop multiplexer and reconfigurable optical add drop multiplexer system
  • Optical switching device, redirection method, reconfigurable optical add drop multiplexer and reconfigurable optical add drop multiplexer system

Examples

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Embodiment 1

[0097] The following combination image 3 and Figure 4 The specific structure of the optical switching device provided by the present application is shown as follows: wherein, image 3 is a structural example diagram of the optical switching device along the second direction, Figure 4 It is a structural example diagram of the optical switching device along the first direction. The optical switching device shown in this embodiment includes an input port 41, a dispersion component, a redirection component 301, and output ports (42, 43). The specific number of input ports and output ports is not limited in this embodiment.

[0098] In the following, the first direction and the second direction shown in this application will be described firstly. The first direction shown in this embodiment can also be called the switching direction or the port direction, and the second direction can also be called the wavelength direction or the port direction. The dispersion direction, with...

Embodiment 2

[0184] In Embodiment 1, the first light beam and the second light beam are input to the optical switching device through the same input port. In this embodiment, the first light beam and the second light beam are input to the optical switching device through different input ports as an example for illustration. :

[0185] For the structure of the optical switching device shown in this embodiment, please refer to Figure 12 and Figure 13 As shown, among them, Figure 12 Shown is a structural example diagram of the optical switching device along the second direction, Figure 13 It is a structural example diagram of the optical switching device along the first direction. For the description of the first direction X, the second direction Y and the third direction Z, please refer to Embodiment 1 for details, and details are not repeated here.

[0186] The optical switching device shown in this embodiment includes a first input port 1201 and a second input port 1202 . It can b...

Embodiment 3

[0200] In Embodiment 1 and Embodiment 2, at least partial regions of the first region 501 and the second region 502 in the second direction Y are realized by means of the second filter 303, the first grating 308 and the second grating 309 The purpose of overlapping, and this embodiment can achieve the purpose of overlapping at least part of the first area 501 and the second area 502 in the second direction Y without setting the second filter 303, as shown below :

[0201] Such as Figure 14 and Figure 15 As shown, compared with Embodiment 1 and Embodiment 2, the dispersion component shown in this embodiment only includes one grating 1400, wherein, Figure 14 is a structural example diagram of the optical switching device along the second direction, Figure 15 It is a structural example diagram of the optical switching device along the first direction.

[0202] The optical switching device shown in this embodiment includes a first input port 1401 and a second input port 14...

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Abstract

The embodiment of the invention discloses an optical switching device, a redirection method, a reconfigurable optical add drop multiplexer and a reconfigurable optical add drop multiplexer system, which are used for improving filtering bandwidth, the optical switching device comprises an input port, a dispersion component, a first filter, a redirection component and an output port, the input port is used for enabling the first light beam and the second light beam to enter the dispersion assembly, the dispersion assembly is used for decomposing the first light beam into a plurality of first sub-light beams, and the dispersion assembly is also used for decomposing the second light beam into a plurality of second sub-light beams; the plurality of first sub-beams and the plurality of second sub-beams belong to different wavebands; the first filter is used for separating the transmission directions of the plurality of first sub-beams and the plurality of second sub-beams into different transmission directions in a first direction based on different wavebands, and enabling the plurality of first sub-beams to enter a first area of the redirection assembly and enabling the plurality of second sub-beams to enter a second area of the redirection assembly; and the first region and the second region are separated from each other in the first direction.

Description

technical field [0001] The present application relates to the field of optical fiber communication, in particular to an optical switching device, a redirection method, a reconfigurable optical add-drop multiplexer and a system. Background technique [0002] With the rapid development of optical network services and the increase of switching capacity, the range of signal bands that need to be processed by a reconfigurable optical add drop multiplexer (ROADM) is also increasing. Wherein, a wavelength selective switch (wavelength selective switch, WSS) is an important component constituting the ROADM. [0003] In the paper "Wide-Passband C+L-band Wavelength Selective Switch by Alternating Wave-Band Arrangement on LCOS" in Proceedings of European Conference on Optical Communication (ECOC), 2018, the WSS provided is as figure 1 As shown, an input port 101 inputs a C-band beam and an L-band beam, and arrayed waveguide gratings (arrayed waveguide grating, AWG) 103 are arranged sid...

Claims

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Application Information

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IPC IPC(8): G02B6/293
CPCG02B6/29304H04J14/0212G02B6/356G02B6/29383G02B6/29395H04J14/0213H04Q11/0005H04Q2011/0024
Inventor 贾伟赵晗
Owner HUAWEI TECH CO LTD
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