Title :
Accurate analysis of MMI devices with two-dimensional confinement
Author :
Rajarajan, Muttukrishnan ; Rahman, B. M Azizur ; Wongcharoen, T. ; Grattan, Kenneth T V
Author_Institution :
Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK
fDate :
9/1/1996 12:00:00 AM
Abstract :
The accurate analysis of multimode interference (MMI) devices with two-dimensional (2-D) confinement has been demonstrated by using the least squares boundary residual (LSBR) method. Accurate modal propagation constants and spatial field profiles in the MMI section are obtained by using the vector H-field based finite element method. The accurate calculation of the excited modal coefficients is achieved by using the LSBR, which satisfies the continuity of the transverse field components more rigorously than using simple overlap integrals
Keywords :
boundary-value problems; least squares approximations; optical constants; optical waveguide theory; optical waveguides; vectors; 2D confinement; MMI devices; MMI section; accurate analysis; accurate calculation; accurate modal propagation constants; excited modal coefficients; least squares boundary residual method; multimode interference devices; spatial field profiles; transverse field component continuity; two-dimensional confinement; vector H-field based finite element method; Finite element methods; Interference; Least squares methods; Optical crosstalk; Optical polarization; Optical waveguides; Planar waveguides; Propagation constant; Signal processing; Two dimensional displays;
Journal_Title :
Lightwave Technology, Journal of
