Magnetic Light Detection Element With Ferromagnetic Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current light detection elements using semiconductor pn junctions face limitations in further development and require innovative solutions for enhanced performance in optical communication systems.
Innovation Solution
A light detection element comprising a magnetic element with a ferromagnetic layer structure and an optical waveguide, where the magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer, and the optical waveguide has a core and cladding, with light applied to the magnetic element through the waveguide, enabling changes in resistance in response to light intensity for signal conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semiconductor pn junction light detection elements are used, then they can detect light, but further development and performance enhancement are limited
Solution Approach 1:
The patent changes the fundamental detection mechanism from semiconductor pn junction to magnetic element with ferromagnetic layers. The magnetic element's resistance changes in response to light intensity through the magneto-optic effect, enabling new detection capabilities and performance enhancements that were not possible with conventional semiconductor structures.
Solution Approach 2:
The patent employs composite material structures including multiple ferromagnetic layers (first and second ferromagnetic layers) separated by spacer layers. This composite magnetic element structure enables enhanced light detection performance through the combined magnetic and optical properties of the materials.
2Productivity
If magnetic element with ferromagnetic layers is used, then light to electrical signal conversion efficiency improves, but device structure becomes more complex
Solution Approach 1:
The magnetic element is segmented into multiple ferromagnetic layers (first ferromagnetic layer, second ferromagnetic layer) separated by spacer layers. This segmentation allows the light-induced resistance changes to be amplified through the series connection of multiple magnetic tunnel junctions, improving conversion efficiency while maintaining manageable structural complexity through modular design.
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 allows for efficient conversion of light into electrical signals, improving sensitivity and versatility in detecting light across various wavelengths, and can be integrated into a single packaged electronic component.
Implementation Method 1
the magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer... light that has propagated through the optical waveguide is applied to the magnetic element
Data Source
AI summary
The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.