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Optical transmission system and its analysis method, terminal station equipment and management equipment

An analysis method and terminal station technology, applied in the field of optical transmission system, can solve problems such as complex system configuration

Active Publication Date: 2020-02-21
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] On the other hand, the introduction of wavelength multiplexing technology and OADM functionality along with the increase in the number of stations has made system configuration such as wavelength band connection management complicated, and it is necessary to provide monitoring of the operating status of the optical transmission system to deal with failure or reconfiguration Function

Method used

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  • Optical transmission system and its analysis method, terminal station equipment and management equipment
  • Optical transmission system and its analysis method, terminal station equipment and management equipment
  • Optical transmission system and its analysis method, terminal station equipment and management equipment

Examples

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Embodiment Construction

[0044] first example embodiment

[0045] The optical transmission system in the first exemplary embodiment of the disclosed subject matter will be first described using the drawings. figure 1 is a block diagram showing the composition of the optical transmission system in the first exemplary embodiment.

[0046] like figure 1 As shown, an optical transmission system 1 includes OADM branch equipment 2 , terminal station equipment 3 of station A, terminal station equipment 4 of station B, terminal station equipment 5 of station C, and optical transmission paths 6 , 7 and 8 . End station devices 3, 4 and 5 are coupled to OADM branch device 2 via optical transmission paths 6, 7 and 8, respectively. Each of the terminal station devices 3 , 4 and 5 includes an optical transmission device 10 and an optical reception device 20 .

[0047] The optical transmission device 10 will be described. figure 2 is a block diagram showing the configuration of the optical transmission device...

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Abstract

The present invention makes it possible to specify the filtering boundary of the optical add / drop equipment at the terminal station even when the proportion occupied by the wavelength band of the virtual light is larger than that occupied by the wavelength band of the main optical signal within the wavelength bandwidth of the optical transmission system. The optical transmission system has a terminal station device for outputting a wavelength-multiplexed optical signal in which an optical signal and virtual light are synthesized, and for accepting as input the respective wavelength-multiplexed optical signals output from a plurality of terminal station devices and dividing / multiplexing An optical add / drop device where the add process is applied to the incoming optical signal. The virtual light has a wavelength configuration in which the intervals between adjacent wavelengths are equidistant, and the wavelength configuration of the virtual light is different for each terminal station device.

Description

technical field [0001] The disclosed subject matter relates to optical transport systems including optical add-drop multiplexers. Background technique [0002] With the increasing demand for connectivity or ease of operation in optical transmission systems using optical fibers in recent years, attention has been paid to optical add-drop multiplexers (hereinafter referred to as OADMs) that provide optical signals on the same optical fiber transmission path. ) wavelength or wavelength band functionality and an optical transmission system with variable wavelength functionality. In particular, with the introduction of wavelength selective switch (hereinafter referred to as WSS) technology to improve resolution, further convenience or connectivity of optical transmission systems employing optical add-drop multiplexers (hereinafter referred to as OADM branch devices) has been improved. [0003] On the other hand, the introduction of wavelength multiplexing technology and OADM fun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/291H04B10/073H04J14/00H04J14/02
CPCH04B10/501H04B10/073H04B10/291H04J14/00H04J14/0202H04J14/0307H04J14/0213H04J14/0256
Inventor 稻田喜久
Owner NEC CORP