Cross power and crosstalk in waveguide couplers

Author

Donnelly, Joseph P. ; Haus, Hermann A. ; Molter, Lynne A.

Author_Institution

MIT Lincoln Lab., Lexington, MA, USA

Volume

6

Issue

2

fYear

1988

fDate

2/1/1988 12:00:00 AM

Firstpage

257

Lastpage

268

Abstract

The operation of two-guide couplers is re-examined to include the effects of cross power. Two two-guide coupler structures that operate as on-off switches are analyzed using both the exact eigenmodes of a slab model of the coupler and a coupled-mode theory that takes cross-power effects into account. The two coupler configurations analyzed are with the output guide on the same side as the input guide and on the side of the coupled guide. For the proper choice of the length of the coupler in the first case, the waveguide detuning can be adjusted so that ideal switching behavior can be achieved. For the second case, full on-off switching is not possible. Excellent agreement is found between results of the coupled-mode theory and exact slab analyses

Keywords

crosstalk; optical couplers; optical waveguide theory; coupled-mode theory; cross power; cross-power effects; crosstalk; exact eigenmodes; on-off switches; slab model; two-guide couplers; waveguide couplers; waveguide detuning; Coupled mode analysis; Couplers; Crosstalk; Dispersion; Extinction ratio; Helium; Laboratories; Optical crosstalk; Optical switches; Optical waveguides; Slabs; Switches;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.3997

Filename

3997