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.
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Authors acknowledge, numerical simulations by Dr. Ajanta Bahr, IIT Delhi, India, Mr. Jitendra K. Mishra, ISM, Dhanbad, India, Mr. Yousaf Omar Azabi, City University London, UK, Md. Enayetur Rahman, City University London, UK, and Mr. James Pond, Ph.D., Lumerical Solutions, Inc., Canada.
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This article is part of the Topical Collection on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM’ 15.
Guest edited by Arti Agrawal, B. M. A. Rahman, Tong Sun, Gregory Wurtz, Anibal Fernandez and James R. Taylor.
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Hada, S.L., Rahman, B.M.A. Rigorous analysis of numerical methods: a comparative study. Opt Quant Electron 48, 309 (2016). https://doi.org/10.1007/s11082-016-0579-x
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DOI: https://doi.org/10.1007/s11082-016-0579-x