Mapping 2D Optoelectronic Arrays to 1D Waveguides
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current high-end computer systems face limitations in data throughput due to restrictive interconnections, particularly in board-to-board and rack-to-rack interconnects, which are hindered by the density of edge connectors and power constraints, and existing technologies fail to effectively map two-dimensional optoelectronic device arrays to one-dimensional waveguides without incurring substantial optical losses.
Innovation Solution
A unique configuration that allows two-dimensional optoelectronic device arrays to be interconnected with one-dimensional waveguides by orienting waveguide channels at a fixed angle relative to the device array grid, minimizing losses and maintaining a compact module size, and utilizing a rhomboidal pattern for the OE devices to avoid sharp bends and optimize optical alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If waveguides are fanned out to wider module pitch, then optical alignment becomes easier, but timing skew between channels increases excessively
Solution Approach 1:
The patent transitions from a one-dimensional linear waveguide array to a two-dimensional waveguide array configuration. This dimensional change allows waveguides to be arranged in multiple rows and columns, enabling independent optimization of alignment and timing characteristics. The 2D arrangement provides additional spatial degrees of freedom to manage signal paths and reduce timing skew while maintaining alignment quality.
Solution Approach 2:
The waveguide array is segmented into multiple independent rows and columns, allowing different regions to serve different functions. Some waveguides can be optimized for alignment while others manage timing characteristics. This segmentation enables the system to handle multiple optical channels with differentiated performance requirements independently.
2Quantity of substance
If linear dimension of optical module increases, then more channels can be accommodated, but optical alignment difficulty increases due to excessive run out
Solution Approach 1:
By organizing waveguides in a two-dimensional grid rather than a single linear array, the patent distributes optical channels across both horizontal and vertical dimensions. This reduces the linear run-out distance required for each individual waveguide while accommodating a larger total number of channels through the expanded 2D footprint.
3Area of stationary object
If OE devices are arranged in rectangular 2D array, then module size is reduced and alignment is improved, but waveguides must navigate sharp bends causing substantial losses
Solution Approach 1:
The patent employs asymmetric waveguide routing patterns within the 2D array configuration, where waveguides follow optimized paths that avoid sharp bends while maintaining compact overall dimensions. The asymmetric layout allows different waveguides to have customized routes tailored to their specific source and destination points, minimizing bend-induced losses.
4Productivity
If edge connector density is increased, then data throughput is improved, but power dissipation and production costs increase
Solution Approach 1:
The patent replaces traditional electrical interconnects with optical waveguide-based interconnections. This substitution eliminates the need for high-density electrical edge connectors and their associated power dissipation issues, while providing higher data throughput capabilities through optical signal transmission with lower energy consumption.
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 approach enhances data throughput by reducing power dissipation and manufacturing costs while maintaining high connector density and minimizing optical losses, enabling more efficient optical alignment and reduced timing skew between channels.
Implementation Method 1
the optoelectronic (OE) device is constrained to operate at a wavelength at which the OE substrate is transparent, whereby the projected optical beam is emitted or detected through the substrate
Implementation Method 2
a lens is provided which focuses an optical beam onto the waveguide
Data Source
AI summary
For integrated circuits including circuit packaging and circuit communication technologies provision is made for a method of interconnecting or mapping a two-dimensional optoelectronic (OE) device array to a one-dimensional waveguide array. Also provided is an arrangement for the interconnecting or mapping of a two-dimensional optoelectronic (OE) device array to a one-dimensional waveguide array.