Multi-Channel Waveform Reconstruction for Optical Power Profiling
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Solution Overview
Problem
Existing power profile estimation (PPE) techniques in optical fibers suffer from reduced accuracy in regions with low optical signal power due to noise interference, leading to signal distortion and reduced spatial resolution.
Innovation Solution
Combining waveform profiles of co-propagated optical signals to generate a combined reconstructed waveform profile, which is emulated over the optical fiber, allowing for improved power profile estimation by comparing it with a combined reference waveform profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power profile estimation is performed using single-channel techniques, then the measurement process is simple, but the accuracy is reduced in regions with low optical signal power due to noise interference
Solution Approach 1:
The patent combines waveform profiles from multiple optical channels (first waveform profile from first optical signal, second waveform profile from second optical signal) to create a combined waveform profile. This merging approach increases the signal-to-noise ratio in regions with low optical power, thereby improving measurement precision without being dominated by noise interference that affects individual channels.
2Measurement precision
If power profile estimation is performed in low optical signal power regions, then complete coverage of the optical link is achieved, but spatial resolution is reduced
Solution Approach 1:
By combining waveform profiles from multiple channels, the patent maintains sufficient signal strength and spatial resolution even in regions where individual channels have low optical power. The combined waveform profile preserves spatial information while reducing noise, enabling accurate power profile estimation across the complete optical link including previously unresolved low-power regions.
3Measurement precision
If multiple optical signals are combined to improve accuracy, then noise interference is reduced, but the device complexity increases
Solution Approach 1:
The patent uses digital waveform profiles obtained from optical signals and creates reconstructed waveform profiles through digital signal processing. This copying approach in the digital domain allows combination of multiple channels without requiring complex physical hardware modifications, thereby improving accuracy while limiting the increase in device complexity to software/digital processing levels.
Data Source
AI summary
A method may include obtaining a first waveform corresponding to a first optical signal received at a first optical receiver via an optical link, and a second waveform profile corresponding to a second optical signal received a second optical receiver. The first waveform profile and the second waveform profile may be combined to form a combined waveform profile. A first reconstructed waveform profile that is an estimate of the first waveform profile and a second reconstructed waveform profile that is an estimate of the second waveform profile may be obtained. The first reconstructed waveform profile and the second reconstructed waveform profile may be combined to form a combined reconstructed waveform profile which may be emulated to obtain an emulated reconstructed waveform profile. A power profile estimation corresponding to the optical ink may be determined based on a comparison between the combined waveform profile and the emulated reconstructed waveform profile.