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Online calibration configurable site wavelength dependent attenuation method, a device and a system

A wavelength-dependent, wavelength-based technology, applied in the field of communications, which can solve the problem of inability to accurately know the WDL of configurable sites

Inactive Publication Date: 2013-03-27
陆中尧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a method for online calibration of the wavelength-dependent attenuation of a configurable site, which aims to solve the problem that the WDL of a configurable site cannot be accurately obtained in the prior art, and realize After the wavelength is opened, the WDL of the configurable site can be updated in real time, providing reliable input parameters for the planning algorithm to provide high-quality network services

Method used

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  • Online calibration configurable site wavelength dependent attenuation method, a device and a system
  • Online calibration configurable site wavelength dependent attenuation method, a device and a system
  • Online calibration configurable site wavelength dependent attenuation method, a device and a system

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Embodiment 1

[0100] Figure 5 A flow chart of the method for calibrating the wavelength-dependent attenuation of a configurable station online according to the first embodiment of the present invention is shown. For the convenience of description, only parts related to this embodiment are shown.

[0101] In step S101, the single-wavelength output optical power of the wavelength to be calibrated outputted by the optical amplifier at the transmitting end is acquired.

[0102] In the embodiment of the present invention, the optical amplifier at the transmitting end (referred to as "the optical amplifier at the transmitting end") emits the light wave including the wavelength to be calibrated. The light wave can be a composite wave (light waves with multiple wavelengths) or a single wave (light waves with only one wavelength). monochromatic light sources such as lasers or monochromatic conventional light sources. Stimulated radiation and spontaneous emission are common phenomena in optical am...

Embodiment 2

[0112] When it is necessary to calibrate the wavelength-dependent attenuation for multiple wavelengths, the embodiment of the present invention provides a better implementation method for step S102 on the basis of the first embodiment above, as follows:

[0113] Multiple wavelength pass-through configurations are performed on the configurable sites, and each wavelength pass-through configuration is: configure one of the multiple wavelengths to be calibrated as a pass-through configurable site, and block the optical wave pass-through of other wavelengths to be calibrated. The station is configured, and the wavelength of the light wave passing through the configurable station is different each time; and, after each wavelength pass-through configuration is completed, the incident optical power of the light wave reaching the optical amplifier at the receiving end is detected.

[0114] More specifically, the above method can be implemented through the following steps:

[0115] The ...

Embodiment 3

[0126] Figure 6 A flow chart of the method for calibrating the wavelength-dependent attenuation of a configurable station online according to the third embodiment of the present invention is shown. For the convenience of description, only the parts related to this embodiment are shown.

[0127] The embodiment of the present invention is applicable to the situation where there is no service wavelength at the configurable site in the deployment stage, and there is no external monochromatic light source at the originating optical amplifier but an OPM device is configured. The details are as follows:

[0128] In step S301, make the transmitting-end optical amplifier work in a spontaneous emission state, and control the spontaneous emission intensity of the transmitting-end optical amplifier so that it is under a spontaneous emission intensity;

[0129] In step S302, the OPM device detects the single-wave outgoing light power P of each light wave of the wavelength to be calibrated...

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Abstract

The invention is applicable to the communication field and provides on-line calibration configurable site wavelength dependent attenuation method, a device and an optical communication system. The method comprises the following steps : obtaining the transmitting end of the optical amplifier to be calibrated single wave emitted light power; the configurable site wavelength through configuration, the calibration of the wavelength of the light penetrating configurable site arrive at the receiving end of an optical amplifier, and detecting the arrive at the receiving end of the optical amplifier optical incident optical power; according to the calibration of the single wave emitted light power to arrive at the receiving end of the optical amplifier optical incident optical power, obtain calibration of wavelength dependent attenuation. In the method, the network starting stage and the expansion phase can be real-time obtaining and updating wdl, so as to timely update the network state, ensuring the quality of the communication quality.. In addition, the invention can completely based on the prior the network the environment to realize the wavelength dependent attenuation on-line calibration, does not need to add any hardware, effectively controlling the cost increase.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a method, device and system for online calibration of wavelength-dependent attenuation of a configurable site. Background technique [0002] In the optical communication network, the attenuation of the wavelength division multiplexing network at the ROADM (reconfigurable optical add-drop multiplexer, reconfigurable optical add-drop multiplexer) site (also known as the configurable site) has wavelength correlation, that is, the performance of the network has a Each channel is wavelength-dependent, and often the attenuation of a site in different wavelength channels can reach 3-4dB, or even greater. This attenuation is related to the WDL (wavelength dependent loss, wavelength-dependent attenuation) of the passive device, and usually the WDL of the WSS (wavelength selective switch, wavelength selective switch) is dominant. [0003] figure 1 It shows the network topology struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/075
CPCH04B10/075
Inventor 周恩波张森
Owner 陆中尧
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