Photonic Interconnects for High-Speed Data Transfer
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Solution Overview
Problem
The semiconductor industry faces limitations in on-chip and off-chip communication as the rate of data transfer across multi-core chips using metal wires increases at a slower pace than computational bandwidth, leading to energy cost constraints and hindering performance growth.
Innovation Solution
The implementation of photonic interconnects with on-chip and off-chip waveguides, optoelectronic converters, and nanophotonic components for high-speed, low-power data transmission, enabling efficient communication between computer system components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal wires are used for on-chip and off-chip communication, then device complexity is reduced and ease of manufacture is improved, but data transfer rate increases at a slower pace than computational bandwidth and energy consumption increases
Solution Approach 1:
The patent replaces electrical signal transmission through metal wires with optical signal transmission through waveguides. This substitution of the transmission medium fundamentally changes the mechanism from electrical conduction to optical propagation, enabling higher data transfer rates with lower energy consumption by exploiting the properties of light instead of electrons
Solution Approach 2:
The patent changes the fundamental parameter of signal transmission from electrical to optical domain. By using photonic interconnects with waveguides and optoelectronic converters, the system transitions to a different physical regime where data is transmitted as light signals, achieving superior bandwidth and energy efficiency compared to traditional electrical interconnects
2Productivity
If the number of cores is increased to maintain performance growth, then computational bandwidth scales linearly, but the rate of data communication across the chip increases at a much slower pace
Solution Approach 1:
The patent replaces the electrical interconnect infrastructure with an optical interconnect system using waveguides and photonic components. This substitution enables data communication rates that can keep pace with the linearly scaling computational bandwidth of multi-core systems, as optical signals provide higher bandwidth and faster transmission speeds compared to electrical signals in metal wires
3Productivity
If transistor size is reduced to microscale and nanoscale dimensions to increase density, then processing power increases, but communication infrastructure becomes a limiting factor
Solution Approach 1:
The patent transitions from planar electrical interconnects to three-dimensional photonic integration with waveguides that can be routed in multiple layers and dimensions. This dimensional transition allows for more flexible and efficient communication infrastructure that can support high-density transistor arrangements without becoming a bottleneck, as optical signals can be routed through vertical and lateral pathways independently
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 solution provides faster data transfer rates, higher computational bandwidth, and lower energy consumption compared to conventional metal wires, allowing for scalable and efficient communication within multi-core systems.
Implementation Method 1
at least one optoelectronic converter. The at least one optoelectronic converter can be photonically coupled to a portion of the plurality of on-chip waveguides and can be photonically coupled to a portion of the plurality of off-chip waveguides
Implementation Method 2
a plurality of on-chip waveguides. Additionally, the photonic interconnect may include a plurality of off-chip waveguides
Data Source
AI summary
Various embodiments of the present invention are directed to photonic interconnects that can be used for on-chip as well as off-chip communications between computer system components. In one embodiment of the present invention, a photonic interconnect comprises a plurality of on-chip waveguides. Additionally, the photonic interconnect may include a plurality of off-chip waveguides, and at least one optoelectronic converter. The at least one optoelectronic converter can be photonically coupled to a portion of the plurality of on-chip waveguides, can be photonically coupled to a portion of the plurality of off-chip waveguides, and is in electronic communication with at least one computer system component.