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Reconfigurable optical add drop multiplexer, optical path protection method and device, and medium

A technology of optical add-drop multiplexer and protection unit, which is applied in the direction of wavelength division multiplexing system, optical multiplexing system, multiplexing communication, etc., can solve the problem of slow data transmission of recovery business, and achieve The effect of resuming the transmission of business data

Pending Publication Date: 2022-04-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This method of restoring service data transmission through ASON rerouting needs to occupy the path resources outside the ROADM. Only by configuring and debugging other network elements in the optical communication system can the service requirements be met, and the speed of restoring service data transmission is relatively slow.

Method used

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  • Reconfigurable optical add drop multiplexer, optical path protection method and device, and medium
  • Reconfigurable optical add drop multiplexer, optical path protection method and device, and medium
  • Reconfigurable optical add drop multiplexer, optical path protection method and device, and medium

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Embodiment Construction

[0057] The embodiment of this application provides a ROADM. The ROADM is applicable to various ROADM networking modes, including but not limited to chain, ring and mesh (mesh) networking. Since the larger the number of dimensions, the more difficult it is to maintain the device for providing fiber connection, so the embodiment of the present application is especially suitable for ROADM networking with a large number of dimensions, such as mesh networking. In the art, dimensions are also known as line directions.

[0058] ROADM mainly has the following structures: Colorless ROADM (colorless-ROADM, C-ROADM) (also known as wavelength-independent ROADM), colorless and directionless ROADM (colorless&directionless-ROADM, CD-ROADM) (also known as wavelength-independent and direction-independent ROADM) ), colorless, directionless, and contentionless ROADM (colorless&directionless&contentionless-ROADM, CDC-ROADM) (also known as wavelength-independent, direction-independent, competitio...

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Abstract

The embodiment of the invention discloses an ROADM, an optical path protection method and device, and a medium, and belongs to the technical field of optical communication. The ROADM comprises a plurality of wavelength scheduling units, an optical interconnection unit and at least one protection unit. And the optical interconnection unit is used for providing a plurality of optical channels so as to realize full interconnection among the plurality of wavelength scheduling units. The protection unit comprises a plurality of fourth input ports and a plurality of fourth output ports. The plurality of fourth input ports are connected with the first output ports of the different wavelength scheduling units, and the plurality of fourth output ports are respectively connected with the second input ports of the different wavelength scheduling units. And the protection unit is configured to transmit the light received by any fourth input port to any fourth output port for output. The protection unit can provide a new optical channel between two wavelength scheduling units corresponding to an abnormal optical channel, thereby realizing optical path protection.

Description

technical field [0001] The present application relates to the technical field of optical communication equipment, and in particular to a reconfigurable optical add-drop multiplexer (reconfigurable optical add-drop multiplexer, ROADM), an optical path protection method and device, and a medium. Background technique [0002] ROADM is a device or device used in a dense wavelength division multiplexing (DWDM) system. The function of ROADM is to realize flexible scheduling of services by dynamically adding or dropping service wavelengths through remote reconfiguration. [0003] A ROADM has multiple dimensions (ie, line directions), each dimension corresponds to a wavelength scheduling unit, and the wavelength scheduling units corresponding to each dimension are fully interconnected. The greater the number of dimensions in the ROADM, the greater the number of optical channels used for inter-dimensional interconnection inside the ROADM. In order to reduce the number of external fi...

Claims

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Application Information

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IPC IPC(8): H04J14/02
CPCH04J14/0212
Inventor 李杨陈昆
Owner HUAWEI TECH CO LTD
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