Numerical modeling of coherent coupling and radiation fields in planar Y-branch interferometers

Author

Munowitz, Michael ; Vezzetti, David J.

Author_Institution

Amoco Technol. Co., Naperville, IL, USA

Volume

10

Issue

11

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

1570

Lastpage

1574

Abstract

The beam-propagation method is used to study intermodal power transfer and radiation losses in slab waveguide splitters and combiners. Numerical computations demonstrate how modal power at an interferometer´s recombination point exhibits an oscillatory dependence on the length of each distinct section of the structure. Recoupling of guided and unguided modes can be anticipated and adjusted so as to maximize output modal power and minimize sensitivity to transition lengths. Examples are given for systems formed from both angle bends and S bends

Keywords

integrated optics; light interferometers; optical couplers; optical losses; optical waveguide theory; S bends; angle bends; beam-propagation method; coherent coupling; combiners; guided modes; interferometer´s recombination point; intermodal power transfer; numerical modeling; oscillatory dependence; output modal power; planar Y-branch interferometers; radiation fields; radiation losses; sensitivity; slab waveguide splitters; transition lengths; unguided modes; Coherence; Interference; Interferometers; Numerical models; Planar waveguides; Refractive index; Slabs; Waveguide components; Waveguide junctions; Waveguide transitions;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.184895

Filename

184895