The Ultra Weak Variational Formulation Applied to Radiation Problems With Macroscopic Sources in Inhomogeneous Domains

This paper shows the applicability of the ultraweak variational formulation for radiation problems that typically occur during the simulation of active optoelectronic devices. In frequency domain, we investigate the field generated by a macroscopic source (i.e., no point source) embedded in a layered medium with varying refractive index. The analysis focuses on large 2-D simulation domains up to 1000 lambda times 1000 lambda. A comparison with various reference solutions shows the applicability of the approach. Special focus is put on computational efficiency aspects such as information reduction and parallelization.