Efficient Full-Vectorial Finite Element Analysis for Circularly Symmetric Waveguides
- Resource Type
- Periodical
- Authors
- Morimoto, K.; Iguchi, A.; Tsuji, Y.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 40(13):4351-4356 Jul, 2022
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Finite element analysis
Optical waveguides
Photonics
Scattering
Geometry
Shape
Boundary conditions
Boundary condition
circularly symmetric waveguide
cylindrical coordinate system
full-vectorial finite element method
propagation operator
scattering operator
- Language
- ISSN
- 0733-8724
1558-2213
In this paper, in order to improve performance efficiency of a full-vectorial finite element method (FV-FEM) for analysis of circularly symmetric waveguides, a novel FV-FEM scheme combined with a propagation operator technique is proposed. A cylindrical coordinate system we employed here requires less computational time and resources for 3-D analysis of circularly symmetric photonic devices. A boundary condition which is necessary for terminating the computational domain of FV-FEM are modified to allow construction of scattering operators. It can analyze arbitrary geometries including structural dinscontinuities along the propagation direction. We show that our approach can greatly improve analysis efficiency of large-scale waveguides by multi-stage connection of the scattering operators.