Optical Channel Telemetry for Fast Transient Detection
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Solution Overview
Problem
Current optical network monitoring systems struggle to detect fast transient events due to their reliance on processor sampling rates that are slower than the rate of these events, leading to missed detection of critical changes in optical channels.
Innovation Solution
The method involves generating channel estimates at a faster rate than the processor sampling rate using an optical detector, determining channel properties, and applying a summarization function to produce a channel summary that captures information on fast transient events, which is then transmitted to an optical network controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If processor sampling rate is used for optical channel monitoring, then system complexity is reduced, but fast transient events are missed due to slower sampling rate
Solution Approach 1:
The patent segments the monitoring function into two parts: the optical detector continuously generates channel estimates at high rate, while the processor periodically summarizes channel properties at lower rate. This segmentation allows the high-speed detection capability to be preserved without requiring the entire system to operate at high speed, thus resolving the contradiction between system complexity and measurement precision.
Solution Approach 2:
The optical detector performs preliminary action by continuously generating channel estimates at high rate before the processor samples them. The detector prepares the channel property data in advance, allowing the processor to capture fast transient events without needing to operate at the full detection rate, thereby reducing system complexity while maintaining measurement precision.
2Measurement precision
If continuous high-rate sampling is performed, then fast transient events are detected, but data processing load increases
Solution Approach 1:
The patent extracts only the essential channel properties from the continuous high-rate channel estimates generated by the optical detector. Instead of processing all raw estimation data, the system extracts relevant channel properties and summarizes them periodically, reducing the data processing load while maintaining the ability to detect fast transient events.
Solution Approach 2:
The system performs partial action by summarizing channel properties at a lower periodic rate rather than continuously processing all high-rate data. The summarization function processes a subset of the generated estimates at intervals, which is sufficient to capture transient events while significantly reducing the overall data processing load and power consumption.
3Measurement precision
If channel estimates are generated faster than processor sampling rate, then fast transient events are captured, but information loss occurs between sampling intervals
Solution Approach 1:
The patent implements feedback through the summarization function that analyzes the sequence of channel estimates between sampling intervals. The summarization function detects changes and trends in the channel properties by comparing successive estimates, providing feedback information about transient events that occurred between processor samples, thus preventing information loss while maintaining the faster generation rate of channel estimates.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the detection and analysis of fast transient events that would otherwise be missed, providing a more comprehensive understanding of optical channel conditions and improving network management by capturing information on changes such as chromatic dispersion, polarization-dependent loss, and other impairments.
Implementation Method 1
an optical detector generates various channel estimates of an optical channel
Data Source
AI summary
A method for performing optical channel telemetry. The method may include generating various channel estimates of an optical channel, wherein the channel estimates are generated by an optical detector. The method may further include determining, from the channel estimates, various channel properties regarding the optical channel. The method may further include determining, using a summarization function and the channel properties, a channel summary that describes a portion of the optical channel during a predetermined period of time. The predetermined period of time corresponds to a processor interval of a computer processor. The method may further include transmitting, over a network, the channel summary to an optical network controller.