Optical Link Power Adjustment for Signal Quality
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Solution Overview
Problem
Current power adjustment methods in optical communication networks are not optimized, leading to suboptimal signal quality due to equal power distribution across channels, which does not account for varying vulnerabilities of connections.
Innovation Solution
A method for adjusting power levels in optical links based on target power levels, vulnerability characterizing parameters, and total available power, using a cost function to minimize differences in power levels for more vulnerable connections, with iterative power adjustments and compensation across links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If equal power distribution is used across all channels, then the system is simple to implement, but signal quality deteriorates for connections with different vulnerability levels
Solution Approach 1:
The patent applies local quality by assigning different power levels to different channels based on their specific vulnerability characterizing parameters. Instead of uniform power distribution, each channel receives customized power adjustment according to its connection's vulnerability level, thereby optimizing signal quality for each individual connection while maintaining overall system simplicity.
2Reliability
If power levels are adjusted for each channel based on vulnerability parameters, then signal quality improves, but system complexity increases
Solution Approach 1:
The patent utilizes parameter changes by modifying the power level parameter dynamically based on the vulnerability characterizing parameter of each connection. The system adjusts power levels according to calculated target values derived from vulnerability parameters such as connection length, bitrate, and modulation format, enabling optimized signal quality through parameter-based control rather than complex manual adjustment mechanisms.
3Reliability
If higher power is allocated to vulnerable channels, then signal quality improves for those channels, but total power consumption increases
Solution Approach 1:
The patent applies partial action by allocating power selectively based on actual vulnerability needs rather than uniformly or excessively. The power adjustment is calculated to provide just enough additional power to vulnerable channels to achieve acceptable signal quality, avoiding unnecessary power consumption on channels that do not require enhanced power levels.
Solution Approach 2:
The patent uses the concept of copying by creating a mathematical model that copies the vulnerability characteristics into power allocation decisions. The vulnerability characterizing parameters are used to generate target power levels through a standardized calculation process, allowing systematic and efficient power distribution that mirrors the actual vulnerability profile of each connection.
Data Source
AI summary
The present invention refers to a method for adjusting power levels of channels (15) in an optical link (7) of an optical network comprising at least one optical amplifier (9) wherein the power distribution among the channels (15) of the optical link (7) is achieved in function of:target power levels based on the features of corresponding connections and of link physical features,total available power in said at least one amplifier (9),features of control means allowing the power distribution,and wherein for a channel corresponding to a connection having a higher vulnerability characterizing parameter, the tolerated difference between an actual channel power level and the target power level is lower than for a channel corresponding to a connection having a lower vulnerability characterizing parameter.