1995
DOI: 10.1109/22.375239
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An improved finite element method formulation for the analysis of nonlinear anisotropic dielectric waveguides

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Cited by 12 publications
(2 citation statements)
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“…In the finite element analysis, the solution can be numerically computed as a linear combination of basis functions which, in electromagnetism, are usually of two kinds: node elements (also called Lagrangian elements) [1,[8][9][10][11][12][13][14] and edge elements (also called Nédélec elements) [1,8,[15][16][17][18][19]. The use of the edge elements shows mainly three important benefits: i) the spurious solutions can be effectively removed in several electromagnetic problem formulations, ii) the boundary conditions at material interface and conducting surface can be easily imposed, iii) there are no difficulties in treating conducting and dielectric edges and corners related to the field singularities [1,20].…”
Section: Introductionmentioning
confidence: 99%
“…In the finite element analysis, the solution can be numerically computed as a linear combination of basis functions which, in electromagnetism, are usually of two kinds: node elements (also called Lagrangian elements) [1,[8][9][10][11][12][13][14] and edge elements (also called Nédélec elements) [1,8,[15][16][17][18][19]. The use of the edge elements shows mainly three important benefits: i) the spurious solutions can be effectively removed in several electromagnetic problem formulations, ii) the boundary conditions at material interface and conducting surface can be easily imposed, iii) there are no difficulties in treating conducting and dielectric edges and corners related to the field singularities [1,20].…”
Section: Introductionmentioning
confidence: 99%
“…Guias com essas características podem ser obtidos por longos processos de "annealing" ou em problemas não lineares com baixa potência de sinal óptico.Entretanto, em situações onde ocorre uma rápida variação no índice de refração (poucas situações práticas) ou quando fortes processos não lineares estão presentes, a contribuição destes termos pode ser crucial. A referência[85] cita a possível importância de considerar-se explicitamente a variação dos índices de refração na formulação do MEF, no caso não linear por ele apresentado. Esse tipo de problema pode ser causado por pequenos erros no cálculo local dos perfis de campo óptico, proveniente da má representação da variação dos índices de refração, associado ao processo iterativo utilizado na determinação da solução estável.…”
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