Title :
Application of modified finite-difference formulas to the analysis of z-variant rib waveguides
Author :
Yamauchi, Junji ; Nakamura, Shu ; Nakano, Hisamatsu
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
Abstract :
Modified finite-difference formulas for a general position of an interface are applied to the propagating beam analysis of z-variant rib waveguides. The modified formula based on the semivectorial H-field is found to be more insensitive to variation in an interface position than that on the E-field. A discretization error is satisfactorily reduced in tilted and tapered rib waveguides.
Keywords :
finite difference methods; optical waveguide theory; optical waveguides; rib waveguides; vectors; discretization error; interface position; modified finite-difference formulas; propagating beam analysis; semivectorial H-field; tapered rib waveguides; tilted rib waveguides; z-variant rib waveguides; Boundary conditions; Equations; Finite difference methods; Geometrical optics; Geometry; Optical beams; Optical propagation; Optical waveguides; Power engineering and energy; Testing;
Journal_Title :
Photonics Technology Letters, IEEE
