Cascadable Photonic Circuit With SOA Amplitude Thresholder
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Solution Overview
Problem
Photonic circuits used in computing face challenges with amplitude errors and phase errors that propagate and accumulate through cascaded photonic gates, affecting the accuracy of signal processing and data communications.
Innovation Solution
A cascadable photonic circuit is implemented using at least one nonlinear semiconductor optical amplifier (SOA) based amplitude thresholder to correct amplitude and phase errors. This circuit comprises photonic inputs, cascaded series of photonic components, amplitude thresholders, and additional photonic components to generate corrected output signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If cascaded photonic gates are used for signal processing, then high bandwidth and low latency are achieved, but amplitude errors and phase errors propagate and accumulate
Solution Approach 1:
The patent introduces error correction mechanisms that provide feedback to compensate for amplitude and phase errors accumulated in cascaded photonic gates. This allows the system to maintain high bandwidth while correcting signal degradation through iterative or compensatory feedback loops.
Solution Approach 2:
The patent employs dynamic adjustment of photonic parameters (such as phase shifters and amplifiers) to compensate for errors. By changing parameters in real-time based on detected errors, the system maintains signal accuracy despite the high-speed operation of cascaded gates.
2Loss of time
If photonic circuits are used for high-speed processing, then low latency is achieved, but amplitude errors and phase errors accumulate through cascaded gates
Solution Approach 1:
The patent implements preliminary error compensation by predicting and correcting amplitude and phase errors before they fully accumulate and affect output accuracy. This allows high-speed processing to proceed while maintaining precision through proactive error management.
Solution Approach 2:
Real-time feedback mechanisms monitor signal quality through cascaded gates and adjust parameters to compensate for accumulating errors, enabling low latency operation without sacrificing signal precision.
3Productivity
If photonic computing is implemented, then high bandwidth and parallel processing are achieved, but amplitude and phase errors propagate through the circuit
Solution Approach 1:
The patent introduces feedback mechanisms that monitor and correct amplitude and phase errors in parallel photonic processing paths, enabling high productivity while maintaining computational accuracy through continuous error compensation.
Solution Approach 2:
Dynamic parameter adjustment in multiple parallel paths allows the system to compensate for errors introduced during high-speed parallel processing, maintaining accuracy without sacrificing productivity.
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
The photonic circuit effectively corrects amplitude and phase errors, ensuring accurate output signals and enabling direct cascading with other photonic gates within a photonic processor, enhancing the reliability and efficiency of photonic computing.
Implementation Method 1
at least one nonlinear semiconductor optical amplifier (SOA) based amplitude thresholder for correction of amplitude errors and/or phase errors produced by photonic logic
Implementation Method 2
The at least one amplitude thresholder is configured to generate one or more thresholding photonic signals by saturating one or more amplitudes of a first of the one or more intermediate photonic output signals
Data Source
AI summary
A photonic circuit with at least one semiconductor optical amplifier-based amplitude thresholder for correcting bit errors. The photonic circuit further includes a first cascaded series of one or more photonic components and a second cascaded series of one or more photonic components that is coupled to the at least one amplitude thresholder. The first cascaded series of one or more photonic components generates one or more intermediate photonic output signals based on one or more received photonic input signals. The at least one amplitude thresholder generates one or more thresholding photonic signals based on a first of the one or more photonic output signals. The second cascaded series of one or more photonic components generates one or more photonic output signals based at least in part on a second of the one or more intermediate photonic output signals and the one or more thresholding photonic signals.