Rigorous analysis of numerical methods: a comparative study

Article
Part of the following topical collections:
  1. Optical Wave & Waveguide Theory and Numerical Modelling 2015

Abstract

For any photonic device simulation, the accuracy of the numerical solution not only depends on the methods being used but also on the discretization parameters used in that numerical method. In this work, Finite Element Method and Finite Difference Time Domain Method based on Maxwell’s equations were used to simulate optical waveguides and directional couplers. As the solution accuracy may also depend on the index contrast used in such photonic devices, the characteristics of low-index contrast Germanium doped Silica and high-index contrast Silicon Nanowire Waveguides were analyzed, evaluated and benchmarked. Numerical results to benchmark Directional Couplers are also reported in this paper.

Keywords

Waveguides, couplers, and arrays Finite element methods Integrated optics 

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Kathmandu UniversityDhulikhel, KavreNepal
  2. 2.City University LondonLondonUK

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