Optical Control Device for Flexible Grid Wavelength Path Power Adjustment
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Solution Overview
Problem
In flexible grid optical networks, setting a new wavelength path can adversely affect existing paths, making it difficult to detect transmission margin deterioration and potentially leading to unexpected transmission failures, due to the mixture of equipment from different vendors and dynamic wavelength path management.
Innovation Solution
A control device that monitors signal quality of established wavelength paths, selects a monitoring wavelength path, and adjusts the power of new wavelength paths to minimize impact on existing paths by calculating noise limit amounts and incrementally increasing path power, ensuring communication quality is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new wavelength path is set in a flexible grid optical network, then wavelength resource utilization is improved, but transmission reliability deteriorates due to potential interference with existing paths
Solution Approach 1:
The control device performs preliminary monitoring of signal quality on existing wavelength paths before setting a new wavelength path. By selecting a monitoring wavelength path and measuring its signal quality in advance, the system can predict potential interference issues and adjust the new path's parameters accordingly, preventing transmission failures before they occur
Solution Approach 2:
The system continuously monitors the signal quality of established wavelength paths and uses this feedback information to control the setting of new wavelength paths. When signal quality degradation is detected on monitored paths, the control device adjusts the new path's power or routing to maintain overall network reliability
2Measurement precision
If power of a new wavelength path is increased to improve signal quality, then communication quality is improved, but interference with existing wavelength paths increases
Solution Approach 1:
The control device dynamically adjusts parameters of the new wavelength path based on monitored signal quality of existing paths. By changing power levels, center wavelengths, or slot widths of the new path, the system optimizes signal quality while maintaining acceptable interference levels on existing wavelength paths
Solution Approach 2:
Before increasing power on a new wavelength path, the system preliminarily assesses the impact on existing paths through signal quality monitoring. If potential harmful interference is predicted, the system takes counter-actions by adjusting the new path's parameters or selecting alternative monitoring paths, preventing degradation of existing transmissions
Data Source
AI summary
There is provided a control device for controlling a first transmission device and a second transmission device, the control device including a memory, and a processor coupled to the memory and the processor configured to set a first wavelength path between the first transmission device and the second transmission device, select a monitoring wavelength path from established wavelength paths allocated on a transmission line between the first transmission device and the second transmission device, monitor a signal quality of the monitoring wavelength path, and increase power of the first wavelength path, based on the signal quality of the monitoring wavelength path.