Integrated Optical Power Combiners for Scalable Signal Transmission
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Solution Overview
Problem
Conventional copper data channels face signal attenuation and crosstalk due to radiated electromagnetic energy, which are difficult to mitigate effectively with existing techniques like equalization, coding, and shielding, limiting scalability and requiring significant power and complexity.
Innovation Solution
A photonically enabled CMOS chip with integrated power combiners using optical power combiners, phase modulators, and polarization-splitting grating couplers to efficiently combine optical signals of unknown phase and intensity, allowing for adaptive phase control to maximize power in one output waveguide while minimizing it in another, thus overcoming channel limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If equalization, coding, and shielding techniques are used to mitigate signal attenuation and crosstalk in copper data channels, then signal quality is improved to some extent, but power consumption, device complexity, and cable bulk increase significantly
Solution Approach 1:
The patent replaces electrical signal transmission through copper channels with optical signal transmission through photonic channels. This substitution eliminates the fundamental issues of copper channels (signal attenuation, crosstalk, electromagnetic radiation) by using light-based transmission, thereby achieving high reliability without requiring complex equalization, coding, and shielding techniques
Solution Approach 2:
The patent introduces photonic intermediaries (optical modulators, optical amplifiers, wavelength division multiplexing components) as mediators between data sources and destinations. These photonic components enable high-speed data transmission with superior signal integrity, avoiding the need for complex electrical signal conditioning techniques required in copper channels
2Reliability
If equalization, coding, and shielding techniques are used to mitigate signal attenuation and crosstalk, then signal quality is improved, but power consumption increases considerably
Solution Approach 1:
The patent substitutes electrical signal processing with optical signal processing, eliminating the need for power-hungry equalization, coding, and shielding techniques. Optical signals inherently resist attenuation and interference, enabling long-distance transmission without the power-intensive mitigation techniques required for electrical signals in copper channels
3Productivity
If copper data channels are used to meet bandwidth requirements, then data transmission is achieved, but signal attenuation and crosstalk due to radiated electromagnetic energy limit scalability
Solution Approach 1:
The patent replaces copper-based electrical transmission with optical transmission, enabling scalable data networks that can meet ever-increasing bandwidth requirements. Optical channels provide superior bandwidth capacity and are immune to electromagnetic interference, allowing systems to scale without the signal degradation and crosstalk limitations that constrain copper channel scalability
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 solution enhances the efficiency of optical signal processing and transmission by effectively addressing signal attenuation and crosstalk, enabling scalable and high-speed data transmission with reduced power and complexity, making optical communication systems more viable for high-bandwidth applications.
Implementation Method 1
The optical signals received by the input optical waveguides may be generated utilizing a polarization-splitting grating coupler, wherein the polarization splitting grating coupler enables polarization-insensitive combining of optical signals
Implementation Method 2
polarization-splitting grating coupler
Implementation Method 3
phase-modulated to configure a phase offset between signals received at a first optical coupler
Data Source
AI summary
A system for integrated power combiners is disclosed and may include receiving optical signals in input optical waveguides and phase-modulating the signals to configure a phase offset between signals received at a first optical coupler, where the first optical coupler may generate output signals having substantially equal optical powers. Output signals of the first optical coupler may be phase-modulated to configure a phase offset between signals received at a second optical coupler, which may generate an output signal having an optical power of essentially zero and a second output signal having a maximized optical power. Optical signals received by the input optical waveguides may be generated utilizing a polarization-splitting grating coupler to enable polarization-insensitive combining of optical signals. Optical power may be monitored using optical detectors. The monitoring of optical power may be used to determine a desired phase offset between the signals received at the first optical coupler.