Rodríguez-Fortuño, Francisco J.Engheta, Nader2023-05-222023-05-222012-03-162012-03-28https://repository.upenn.edu/handle/20.500.14332/33829We theoretically explore the possibility of reducing propagation loss in a metal-insulator-metal (MIM) waveguide, using mode combinations to achieve wall-avoiding field distributions along a certain propagation length. We present analytical results for several waveguides showing notable loss reduction, and we discuss the trade-offs between low loss and high confinement present in this technique.EngineeringPhysicsArticle