Optical Communication Circuits Interposer Signal Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed optical communication systems face challenges in power efficiency and data rate limitations due to the use of lengthy signal lines through wiring layers in IC packages, which dissipate significant power and restrict data transmission.
Innovation Solution
The implementation of a configuration where the serializer circuit and optical interface circuit are mounted on separate interposers, reducing signal line lengths to less than or equal to ⅛ the wavelength of the highest frequency, and integrating the serializer with the optical communication circuit on the same interposer to improve power efficiency and data rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If signal lines are extended through wiring layers in IC packages, then connectivity between circuits is achieved, but power dissipation increases and data transmission speed decreases
Solution Approach 1:
The patent transitions signal transmission from planar wiring layers (2D) to three-dimensional vertical interconnects through wiring vias (3D), reducing signal path length and improving both speed and power efficiency by exploiting the third dimension for signal routing
Solution Approach 2:
The signal transmission path is segmented into multiple short sections through hierarchical wiring layers and vias, replacing single lengthy traces with a series of short connected segments that collectively achieve the same connectivity with reduced power loss and improved signal integrity
2Loss of energy
If signal line length is reduced to improve power efficiency, then power dissipation decreases, but manufacturing complexity increases due to multi-layer wiring requirements
Solution Approach 1:
The wiring structure is segmented into multiple standardised layers and via levels, allowing complex interconnections to be built from simple, repeatable structural units that simplify manufacturing despite the increased number of components
Solution Approach 2:
The patent employs systematic variation of wiring layer parameters (conductor width, spacing, material composition) and via parameters (diameter, depth, fill material) to optimize electrical performance while maintaining compatibility with standard semiconductor manufacturing 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
This configuration enhances power efficiency and data transmission rates by reducing signal line lengths and allowing for higher impedance signal lines, thereby improving the overall performance of high-speed optical communication systems.
Implementation Method 1
A plurality of lasers is coupled to receive an electronic signal. Each laser is configured to encode and output a respective optical data signal in response to the electronic signal
Implementation Method 2
Each optical component of a plurality of optical components configures second optical parameters of an input optical data signal
Implementation Method 3
A first selection circuit is configured to select the respective optical data signal from one of the lasers. A second selection circuit is coupled to receive the selected optical data signal
Data Source
AI summary
Various apparatuses, circuits, systems, and methods for optical communication are disclosed. In some implementations, an apparatus includes multiple lasers that input an electronic signal. Each laser encodes and outputs a respective optical data signal based on the electronic signal. Each laser has a different configuration of one or more first optical parameters. A first selection circuit selects the respective optical data signal from one of the lasers. Multiple optical components configure second optical parameters of an input optical data signal. A second selection circuit inputs the selected optical data signal from the first selection circuit and provides the selected optical data signal to one of the optical components. A third selection circuit selects the optical data signal output from the one optical component.