A Novel Approach to Coupled-Mode Analysis of Geometric Deformations in Reciprocal Waveguides

摘要

We present an approach to treat geometric perturbations in coupled-mode analysis for reciprocal waveguides. Geometric perturbations are converted into material ones and a coupled-mode theory for material perturbations is used to assess the propagation. The method is tested on an elliptically deformed antiresonant fiber.