Bidirectional Optical Link Anomaly Detection via Power Profile Estimation
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Solution Overview
Problem
Existing methods for monitoring bidirectional optical links lack accuracy in detecting anomalies, particularly due to noise and limited resolution, which can lead to inefficiencies in identifying signal degradation or enhancement along the optical link.
Innovation Solution
The use of bidirectional power profile estimations (PPEs) to analyze bidirectional optical links, where a first PPE is obtained for an optical signal propagating in one direction and a second PPE for an optical signal propagating in the opposite direction, allowing for the identification of locations with gain or loss along the optical link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If unidirectional power profile estimation is used for optical link monitoring, then the monitoring process is simple, but the measurement precision and anomaly detection accuracy are insufficient due to noise and limited resolution
Solution Approach 1:
The patent combines power profile estimations from both forward and reverse directions to create a comprehensive optical link analysis. By merging the PPE obtained from the forward direction with the PPE obtained from the reverse direction, the system achieves higher measurement precision and reduced noise through bidirectional data integration, directly resolving the contradiction between simple monitoring and accurate anomaly detection
2Measurement precision
If bidirectional power profile estimations are combined to improve measurement precision, then anomaly detection accuracy is enhanced, but the device complexity increases
Solution Approach 1:
The patent segments the optical link monitoring into two independent directional measurements (forward and reverse directions). Each direction's PPE is obtained separately through independent optical signal transmissions, allowing the system to manage complexity by dividing the monitoring task into manageable segments while achieving enhanced overall measurement precision through their combination
3Measurement precision
If optical signals are transmitted in both directions for PPE, then the resolution and noise reduction are improved, but the loss of time for dual-directional measurements increases
Solution Approach 1:
The patent employs periodic action by alternating between forward and reverse direction optical signal transmissions. The system transmits optical signals in one direction, obtains the PPE, then switches to the opposite direction for the next measurement cycle. This periodic bidirectional measurement approach improves resolution and reduces noise through multiple measurements while managing time loss through systematic alternation between directions
Data Source
AI summary
A method may include obtaining a first power profile estimation (PPE) for a first optical signal propagating through an optical link in a first direction. The method may include obtaining a second PPE for a second optical signal propagating through the optical link in a second direction opposite the first direction. The method may also include generating an optical link analysis indicating one or more locations along the optical link that apply a gain or loss to optical signals propagating through the optical link.