Title :
A new iterative method for the analysis of longitudinally invariant waveguide couplers
Author :
Su, Jung-Young ; Wei, Pei-Kuen ; Wang, Way-Seen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
12/1/1994 12:00:00 AM
Abstract :
In this paper, a new iterative method to solve for the modal indices and field profiles of the supermodes of multichannel waveguide structures is proposed. This method combines the shift inverse power method with the simultaneous iteration method, and can be applied to any longitudinally invariant waveguide couplers problem very efficiently. Using this method, the characteristics of the leading supermodes can be obtained simultaneously. The validity and accuracy of this method are assessed by comparing to other existing methods for symmetric two-channel waveguide couplers. Results are in good agreement. Asymmetric two-channel and symmetric three-channel waveguide couplers are then considered to show the usefulness and versatility of the proposed method
Keywords :
iterative methods; optical couplers; refractive index; waveguide couplers; asymmetric three-channel waveguide couplers; field profiles; iterative method; leading supermodes; longitudinally invariant waveguide couplers; longitudinally invariant waveguide couplers problem; modal indices; multichannel waveguide structures; shift inverse power method; simultaneous iteration method; supermodes; symmetric three-channel waveguide couplers; symmetric two-channel waveguide couplers; Directional couplers; Helium; Integrated optics; Iterative methods; Optical coupling; Optical devices; Optical filters; Optical switches; Optical waveguides; Rectangular waveguides;
Journal_Title :
Lightwave Technology, Journal of
