Automatic power commissioning method and the first roadm site

Abstract

Embodiments of the present invention provide an automatic power testing and tuning method and a first reconfigurable optical add / drop multiplexer ROADM site to improve signal receiving quality. The method includes: creating an optical cross-connection for a wavelength of a first service after receiving a first service request message, and then obtaining a deterioration balance value of a first optical signal-to-noise ratio of wavelengths of all services on the first optical multiplex section according to a current optical signal-to-noise ratio of the wavelengths of all the services on the first ROADM site and an optical signal-to-noise ratio on a next ROADM site, where the services pass through the first optical multiplex section; obtaining a first outbound target power of the wavelengths of all the services on the first ROADM site separately according to the obtained deterioration balance value of the first optical signal-to-noise ratio of the wavelengths of all the services on the first optical multiplex section; and finally, tuning a single-wavelength attenuation of the wavelengths of all the services according to the first outbound target power. The present invention is applicable to the communication field.

Description

technical field [0001] The present invention relates to the communication field, in particular to an automatic power commissioning method and a first ROADM station. Background technique [0002] A wavelength division network refers to an optical network that adopts a WDM (Wavelength Division Multipleing, wavelength division multiplexing) transmission principle. With the maturity and application of WDM networking technology, WDM network management also changes accordingly, and gradually develops towards the direction of schedulable, intelligent, and service-oriented WDM network management. Automatically Switched Optical Network (ASON, Automatica11ySwitchedOpticalNetwork) adds a control plane to the optical network, and realizes automatic connection management through signaling. [0003] The method of automatic power commissioning in the existing automatic switching optical network is as follows: [0004] If the wavelength of a new service is added, then from the first ROADM...

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Problems solved by technology

[0006] However, this method does not consider the difference in transmission performance between different wavelengths, such as different wavelengths have different attenuation in the device, and the single-wave nominal power used to calculate the attenuation to be set is different, resulting in the actual outbound power of each wavelength. Nominal power, or even if the nominal power is reached, the power of different wavelengths will become unbalanced after long fiber transmission, resulting in unsatisfactory received signal quality

[0007] Moreover, this method does not take into account the impact of the newly added or reduced wavelengths on the performance of existing wavelengths when establishing or deleting bidirectional optical crossovers, resulting in the degradation of the received signal quality of some service wavelengths in the network

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