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Green's tensor technique for scattering in two-dimensional stratified media
1Electromagnetic Fields and Microwave Electronics Laboratory, Swiss Federal Institute of Technology, ETH-Zentrum ETZ, CH-8092 Zurich, Switzerland.
Summary
This study introduces an accurate computational technique for electromagnetic fields in 2D scattering structures. It simplifies calculations by discretizing only embedded scatterers, not the entire stratified background.
Area of Science:
- Computational electromagnetics
- Photonics and optical engineering
Background:
- Scattering structures with embedded bodies in stratified backgrounds present computational challenges.
- Accurate electromagnetic field computation is crucial for designing complex optical devices.
Purpose of the Study:
- To develop an accurate and self-consistent computational technique for electromagnetic fields in 2D scattering structures.
- To simplify the discretization process by leveraging the Green's tensor of the stratified background.
Main Methods:
- A fully vectorial approach based on the Green's tensor associated with the stratified background.
- Derivation and detailed discussion of the Green's tensor computation.
- Discretization limited to embedded scatterers.
Main Results:
- An accurate method for computing electromagnetic fields in complex 2D scattering geometries.
- Demonstration of the technique's effectiveness using examples from photonic integrated circuits.
Conclusions:
- The presented technique offers an efficient and accurate solution for electromagnetic scattering problems in stratified media.
- This method is particularly applicable to the design and analysis of photonic integrated circuits.
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