Microplasma Photonic Crystal Tunability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional photonic crystals are static and lack tunability, limiting their ability to quickly vary electromagnetic properties, and previous plasma-based photonic crystals face issues with insertion loss and inability to incorporate electromagnetically-active materials, restricting their application in high-frequency communications and sensing.
Innovation Solution
A microplasma photonic crystal device with a periodic array of microtubes confining microplasmas, allowing for adjustable electron densities and the incorporation of metal or dielectric coatings and electromagnetically-active materials, reducing insertion loss and enhancing tunability and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional photonic crystals are used, then electromagnetic energy control is achieved, but the crystal properties are fixed and not readily altered
Solution Approach 1:
The patent transforms static photonic crystals into dynamic, reconfigurable structures by incorporating plasma-filled microtubes that can be independently controlled. The plasma density in each microtube can be adjusted in real-time through electrode control, enabling the crystal to dynamically alter its electromagnetic properties, transmission spectra, and resonance characteristics according to operational requirements.
Solution Approach 2:
The invention changes the physical state and controllable parameters of the photonic crystal by filling microtubes with plasma instead of using solid dielectrics. The electron density of the plasma can be varied by changing the power supplied to the electrodes, allowing continuous adjustment of the refractive index and electromagnetic response of the crystal structure.
2Adaptability or versatility
If previous plasma-based photonic crystals are used, then tunability is achieved, but insertion loss is significant and electromagnetically-active materials cannot be incorporated
Solution Approach 1:
The patent segments the photonic crystal structure into discrete microtubes, each independently filled with plasma and controllable by separate electrodes. This segmentation allows selective activation and deactivation of individual microtubes or groups, enabling dynamic reconfiguration of the electromagnetic path and reducing energy loss by optimizing the active plasma volume.
Solution Approach 2:
The invention applies local quality control by allowing different microtubes to have different plasma densities or to be in different states (plasma on/off) based on their position and function within the crystal. This enables optimization of electromagnetic energy distribution and reduction of insertion loss in specific regions while maintaining tunability.
3Adaptability or versatility
If microtubes with metal or dielectric coatings are used, then versatility and tunability are enhanced, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where microtubes are embedded within a larger photonic crystal framework. The microtubes themselves can contain plasma, and their walls can be coated with metal or dielectric layers, creating multiple functional layers within a single structural element. This nesting approach enhances versatility without proportionally increasing overall device complexity.
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 achieves significant reduction in insertion loss, enabling efficient reflection, transmission, and storage of electromagnetic energy with improved tunability and versatility, particularly in the microwave and THz regions, suitable for advanced communications and sensing applications.
Implementation Method 1
the array has a spacing and average electron density selected to form a photonic crystal and produce a photonic response to the incident electromagnetic energy
Implementation Method 2
generating a periodic array of microplasmas in an array of microtubes
Implementation Method 3
at least a plurality of the microtubes separately confine microplasma therein
Implementation Method 4
electrodes for stimulating microplasma the elongated microtubes
Implementation Method 5
interacting the incident electromagnetic energy with the periodic array of microplasmas to reflect, transmit and/or trap the incident electromagnetic energy
Data Source
AI summary
The invention provides a microplasma photonic crystal for reflecting, transmitting and/or storing incident electromagnetic energy includes a periodic array of elongate microtubes confining microplasma therein and having a column-to-column spacing, average electron density and plasma column diameter selected to produce a photonic response to the incident electromagnetic energy entailing the increase or suppression of crystal resonances and/or shifting the frequency of the resonances. The crystal also includes electrodes for stimulating microplasma the elongated microtubes Electromagnetic energy can be interacted with the periodic array of microplasma to reflect, transmit and/or trap the incident electromagnetic energy.