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The electromagnetic behavior of plasmonic structures can be predicted afterdiscretizing and solving a linear system of equations, derived from acontinuous surface integral equation (SIE) and the appropriate boundaryconditions, using a method of moments (MoM) methodology. In realisticlarge-scale optical problems, a direct inversion of the SIE-MoM matrix cannotbe performed due to its large size, and an iterative solver must be usedinstead. This paper investigates the performance of four iterative solvers(GMRES, TFQMR, CGS, and BICGSTAB) for five different SIE-MoM formulations(PMCHWT, JMCFIE, CTF, CNF, and MNMF). Moreover, under this plasmonic context, aset of suggested guidelines are provided to choose a suitable SIE formulationand iterative solver depending on the desired simulation error and availableruntime resources.

Comparison of iterative solvers for electromagnetic analysis of plasmonic nanostructures using multiple surface integral equation formulations