Combining ray-tracing and FDTD to enable the simulation of complex optical devices in an iterative simulation process with reduced simulation effort

Claude Leiner; Wolfgang Nemitz; Susanne Schweitzer; Franz P. Wenzl; Gerhard Peharz; Christian Sommer

doi:10.1117/12.2191257

23 September 2015 Combining ray-tracing and FDTD to enable the simulation of complex optical devices in an iterative simulation process with reduced simulation effort

Claude Leiner, Wolfgang Nemitz, Susanne Schweitzer, Franz P. Wenzl, Gerhard Peharz, Christian Sommer

Author Affiliations +

Proceedings Volume 9630, Optical Systems Design 2015: Computational Optics; 96300T (2015) https://doi.org/10.1117/12.2191257
Event: SPIE Optical Systems Design, 2015, Jena, Germany

Abstract

The development of photonic multi-scale devices with tailor-made optical properties requires the control and the manipulation of light propagation within structures of different length scales, ranging from sub-wavelength to macroscopic dimensions. Unfortunately, applications of common optical simulation methods are usually restricted to particular size regimes. For this reason, a complete optical simulation of multi-scale devices can only be conducted by combining different simulation methods. In our previous work we already introduced an interface method that uses the Poynting vector to bridge between classical Ray-Tracing and the Finite-Difference-Time-Domain method to enable the simulation of suchlike devices. In this contribution we present and discuss a method to reduce the simulation effort and time consumption of this interface simulation process. This approach is based on an FDTD simulation concept for creating the matrices containing probability density distributions that are needed for the FDTD-RT interface simulations by using broadband frequency sources. With this new FDTD simulation concept, the number of simulations needed to create these matrices can be significantly decreased.

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Claude Leiner, Wolfgang Nemitz, Susanne Schweitzer, Franz P. Wenzl, Gerhard Peharz, and Christian Sommer "Combining ray-tracing and FDTD to enable the simulation of complex optical devices in an iterative simulation process with reduced simulation effort", Proc. SPIE 9630, Optical Systems Design 2015: Computational Optics, 96300T (23 September 2015); https://doi.org/10.1117/12.2191257

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KEYWORDS

Finite-difference time-domain method

Matrices

Interfaces

Computer simulations

Optical simulations

Diffractive optical elements

Optical components

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