TY - JOUR T1 - Galerkin Finite-Element Method for the Analysis of the Second Harmonic Generation in Wagon Wheel Fibers TT - JF - ijop JO - ijop VL - 11 IS - 2 UR - http://ijop.ir/article-1-257-en.html Y1 - 2017 SP - 113 EP - 122 KW - Second harmonics KW - Wagon wheel fiber KW - Finite element method KW - LiTaO3. N2 - The nonlinear effects of the second harmonic generation have been investigated for the propagation of light along the axis of fibers of wagon wheel cross sectional shape. Nodal finite element formulation is utilized to obtain discretized Helmholtz equations under appropriate boundary conditions. The hierarchical p-version nodal elements are used for meshing the cross section of wagon wheel fiber. The fiber material has been chosen to be LiTaO3 to provide proper second harmonic generation. Propagation of generated second harmonics for two incident field amplitudes are studied in this work. M3 10.18869/acadpub.ijop.11.2.113 ER -