- Build a bridge from fundamental research on metamaterials to engineering applications
- Develop new methods for the design of devices built with composite, doped metamaterials based on numerical simulations and optimizations
- Develop ultra-compact devices based on composite, doped metamaterials for photonics and in the Terahertz regime
- Fabrication and characterization of prototypes
- Modification and tuning of prototypes
- Development of accurate and efficient numerical Maxwell solvers
- Development of sophisticated and deterministic numerical optimizers
- Simulation and optimization of promising photonic crystal and metamaterial structures
- Fabrication of nano structures based on dielectric (semiconductors, amorphous) and metallic materials
- Static and dynamic characterization of nano structures using port-to-port, and local techniques.
- Modification of nano structures
- Densification increases interactions. Ultra-dense structures therefore become highly complex and cannot be designed with well-known rules.
- Numerical optimization based on accurate simulation is the way to design ultra-dense structures.
- Optimization leads to highly sensitive parts of the structures. This poses very hard problems of fabrication tolerances.
- High fabrication accuracy requires new technologies based on tuning and trimming of the critical areas guided by measurements and simulations.
- Generalization and combination of existing concepts leads to higher degree of freedom and this opens the door to devices with more attractive functionality. CDMs include concepts of photonic crystals, metamaterials (including negative index materials), artificial media (including artificial chiral media), diffractive optics, and frequency selective surfaces.
- In order to take advantage of more freedom, more experience is required. Experience can be efficiently obtained from accurate and reliable numerical simulations and optimizations.
The behavior of photonic crystal structures is often counter-intuitive.
Design rules and guidelines are currently missing. To test your intuition and
ability to find design rules, we prepared a Java applet of a simple photonic
Try our Java applet!
Therefore, our favorite way to design photonic crystals structures consists of several steps:
- First idea, based on experience and intuition.
- Numerical analysis of the first concept, including sensitivity analysis.
- Rough optimization of defects in the initial photonic crystal.
- Fine optimization based on the sensitivity analysis of the best solutions found in step 3.
In order to give you a better impression how photonic crystals work, we have prepared some movies for you. Watch our movies!