Rigorous Simulation of Sub-Wavelength Structures in Optical Systems

The interoperability of modeling techniques implemented in the optical design software VirtualLab Fusion means that its users can navigate the ever-relevant compromise between accuracy and speed with full flexibility. That is also the case when it comes to simulating the propagation of light through sub-wavelength structures: rigorous models can be selected just for those parts of the optical system that exhibit sub-wavelength modulation, while choosing numerically lighter alternatives elsewhere in the system, thus reaching the required accuracy without sacrificing speed unnecessarily.

But don’t take our word for it – see for yourself!
You can find links below to two very different examples of systems with sub-wavelength structures: the illustration of the design workflow of a meta-lens constructed from an arrangement of nano-pillars with different diameters, and a prism beam splitter based on the working principle of frustrated total internal reflection (FTIR), where the energy redistribution between the two arms of the splitter is achieved by the evanescent waves tunneling through a thin layer of material barely separating two prisms of a denser medium.

Frustrated Total Internal Reflection (FTIR) on a Cube Beam Shaper

This Use Case demonstrates a real beam splitter based on Frustrated Total Internal Reflection (FTIR) and investigates the influence the gap thickness on reflection and transmission efficiency.

Design and Analysis of a Metalens

In this use case, a focusing metalens based on dielectric, cylindrical pillars is designed and analyzed in detail. The parameters used follow a publication by E. Bayata (2022).

We wish you a Merry Christmas and a Happy New Year.

We wish you a Merry Christmas and a Happy New Year.