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

Volume

12

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

2056

Lastpage

2065

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;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.350627

Filename

350627