Photonic ADC Architecture Using Phase Modulation to Cut Energy Use
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Solution Overview
Problem
Traditional electronic analog-to-digital converters require significant energy for sampling and quantization, posing a challenge in energy-constrained applications, necessitating the development of a more efficient photonic analog-to-digital conversion system.
Innovation Solution
A photonic analog-to-digital conversion system utilizing optical inputs, phase remodulators, and photonic circuits to convert optical analog signals into digital outputs, leveraging phase modulation and interference to generate digital representations with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional electronic analog-to-digital converters are used, then conversion functionality is achieved, but energy consumption is high
Solution Approach 1:
The patent replaces the electronic conversion system with a photonic system. The analog-to-digital conversion is performed using optical components including a photonic integrated circuit with interferometers and phase modulators, eliminating the need for electronic sampling and quantization circuits that consume significant energy.
Solution Approach 2:
The patent changes the fundamental operating parameters from electronic to photonic domains. The system uses optical intensity modulation and interferometric detection to perform conversion, fundamentally changing the physical domain and associated energy consumption characteristics from electronic to photonic operation.
2Use of energy by moving object
If photonic analog-to-digital conversion is implemented, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent integrates multiple photonic components including light sources, phase remodulators, photonic circuits with interferometers, and detectors into a unified photonic integrated circuit. This merging of functions into a single integrated platform reduces overall system complexity despite the sophisticated conversion mechanism.
Solution Approach 2:
The photonic integrated circuit performs multiple functions within a single device: signal modulation, interference-based conversion, and detection. The interferometer-based architecture provides universal functionality for converting analog optical signals to digital outputs through intrinsic photonic processes.
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 system effectively converts optical analog inputs into digital outputs with lower energy requirements, addressing the energy constraints of traditional converters and enhancing efficiency in analog-to-digital conversion.
Implementation Method 1
generating a phase-modulated optical signal
Implementation Method 2
leveraging phase modulation and interference to generate digital representations
Data Source
AI summary
A system for analog-to-digital conversion, preferably including one or more optical inputs, optical sources, phase remodulators, and/or photonic circuits, and optionally including detector banks and/or digital electronics. A method for analog-to-digital conversion, preferably including receiving an optical input signal, generating a phase-modulated optical signal, and/or generating a plurality of optical outputs, and optionally including generating a plurality of electrical outputs and/or encoding a digital representation of the outputs.