Fluidic-Channel Photonic Waveguides for Communication and Cooling
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Solution Overview
Problem
High-density through-silicon vias (TSVs) for communication in computing and communication systems lead to cooling challenges, as they increase latency and bandwidth requirements while compromising effective cooling mechanisms.
Innovation Solution
Implementing fluidic-channels configured as photonic waveguides within dies to facilitate both communication and cooling, using fluids with a higher index of refraction than the surrounding medium, allowing for wavelength division multiplexing and faster photon-based communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-density through-silicon vias (TSVs) are used for communication, then bandwidth and latency requirements are met, but cooling effectiveness deteriorates
Solution Approach 1:
The patent applies multi-functionality by designing fluidic channels that simultaneously serve two purposes: (1) cooling the die by circulating fluid through channels positioned near heat-generating components, and (2) enabling photonic communication between stacked dies. The same physical structure (fluidic channels) performs both thermal management and data transmission functions, eliminating the need for separate TSVs for communication and thus preserving cooling effectiveness while maintaining high bandwidth.
2Loss of time
If high-density TSVs are used for communication, then latency requirements are met, but cooling mechanisms are compromised
Solution Approach 1:
The patent uses fluidic channels to perform dual functions: rapid fluid circulation for cooling and photon transmission for low-latency communication. The channels provide direct thermal coupling between the die and cooling fluid while simultaneously serving as waveguides for optical signals, achieving both effective cooling and low latency without the trade-off imposed by high-density TSV arrangements.
3Temperature
If additional cooling elements are added to improve cooling, then cooling effectiveness is improved, but space is consumed
Solution Approach 1:
The patent eliminates the need for additional dedicated cooling elements by making the fluidic channels multi-functional. The channels are positioned to provide efficient thermal coupling with heat-generating components while simultaneously serving as photonic waveguides for communication. This integration achieves effective cooling without requiring extra space for separate cooling structures.
Solution Approach 2:
The patent merges the cooling function and communication function into a single integrated structure. The fluidic channels that would traditionally serve only cooling purposes are combined with photonic waveguide functionality, allowing the same physical pathways to handle both thermal management and data transmission, thus saving space while maintaining cooling effectiveness.
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 enables efficient cooling and high-density communication by reducing the need for additional cooling elements, saving space and enhancing bandwidth through photon-based communication with lower attenuation and faster modulation.
Implementation Method 1
fluids with a higher index of refraction than the surrounding medium
Implementation Method 2
fluidic-channels configured as photonic waveguides
Implementation Method 3
circulation of a fluid through at least the second portion of the die
Data Source
AI summary
Systems and apparatus including fluidic-channels configured as photonic waveguides for both communication and for cooling are described. An example die comprises a first portion of the die including a first set of components formed within the first portion of the die. The die further includes a second portion of the die including a set of fluidic-channels formed within the second portion of the die, where the set of fluidic-channels provides both: (1) circulation of a fluid through at least the second portion of the die, and (2) communication between at least a subset of the first set of components formed within the first portion of the die and at least a subset of the second set of components formed within the second portion of the die. Such dies can also be combined to create three-dimensional integrated circuit (3DIC) systems, 2.5DIC systems, or systems with horizontal communication among the dies.