Localized Organic Material for Reliable Plasmonic Waveguides
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Solution Overview
Problem
Existing plasmonic devices face challenges in achieving improved reliability, large electro-optic bandwidth, small footprint, and simplified fabrication, while maintaining high-speed operation.
Innovation Solution
A plasmonic device design featuring inorganic confining structures adjacent to an organic optical material, enclosed by a protective layer, which limits the organic material's area and protects it from external influences, enhancing reliability and enabling efficient modulation of optical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the organic optical material is deposited in a large area to ensure complete coverage, then the reliability is improved, but the footprint of the device increases
Solution Approach 1:
The patent applies local quality by limiting the organic optical material deposition to specific localized areas defined by the inorganic confining structures, rather than depositing material across the entire substrate. This ensures reliability is improved only where needed for the plasmonic waveguide function, while minimizing the overall footprint.
2Ease of manufacture
If the organic optical material is exposed to external influences, then the fabrication process is simplified, but the reliability deteriorates due to degradation
Solution Approach 1:
The patent implements beforehand cushioning by introducing a protective layer that encloses the organic optical material before it can be exposed to degrading external influences during operation. This protective enclosure prevents degradation while maintaining fabrication simplicity, as the protective layer is deposited as part of the manufacturing process.
3Ease of manufacture
If the organic optical material is not enclosed by a protective layer, then the fabrication process is simpler, but the power-handling capabilities and operating lifetime are reduced
Solution Approach 1:
The protective layer serves as a beforehand cushion that protects the organic optical material from degradation mechanisms that would limit operating lifetime and power-handling capabilities. By incorporating this protective enclosure during fabrication, the patent extends device lifetime without significantly complicating the manufacturing process.
4Area of stationary object
If the organic optical material is arranged in a limited area, then the device footprint is reduced, but the reliability may be compromised due to insufficient coverage
Solution Approach 1:
The patent resolves this contradiction by applying local quality - the organic optical material is deposited in limited areas precisely defined by the inorganic confining structures. This ensures the material is placed exactly where needed for plasmonic waveguide function, achieving both small footprint and high reliability through precise localized deposition rather than extensive coverage.
Solution Approach 2:
The inorganic confining structures serve as intermediaries that define the boundaries for organic optical material deposition. These structures mediate between the need for limited area coverage and reliable performance by providing a framework that guides precise material placement, ensuring sufficient coverage only where functionally required.
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 design provides improved reliability, large electro-optic bandwidth, and a small footprint, while allowing for simple fabrication and reduced temperature sensitivity, thus enhancing the plasmonic device's performance and operational lifetime.
Implementation Method 1
plasmonic devices enable modulation of an optical signal in accordance with an electrical signal
Implementation Method 2
Plasmonic devices introduce materials with a negative real part of the permittivity, e.g., metals, to overcome the diffraction limit, to localize and guide light
Implementation Method 3
a protective layer is deposited for covering and/or enclosing the organic optical material for improved reliability of the plasmonic waveguide
Data Source
AI summary
The invention relates to a plasmonic device and a method for fabricating a plasmonic device. The plasmonic device comprises a substrate on which is arranged a plasmonic section which includes at least one inorganic confining structure adjacent to an organic optical material for providing a plasmonic waveguide. The organic optical material originates from one or more processes for arranging the organic optical material in a limited area. A protective layer is deposited for covering and/or enclosing the organic optical material for improved reliability of the plasmonic waveguide.