Non-evanescent adiabatic directional coupler

Author

Kenis, Alexander M. ; Vorobeichik, Ilya ; Orenstein, Meir ; Moiseyev, Nimrod

Author_Institution

Dept. of Phys., Technion-Israel Inst. of Technol., Haifa, Israel

Volume

37

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1321

Lastpage

1328

Abstract

A directional coupling mechanism based on an adiabatic coupling between three optical modes is suggested. The optical power transfer between two waveguides which are far apart is mediated by adiabatic coupling between zero-order optical modes of the individual waveguides and a high-order intermediate mode. The analytical model for an adiabatic three-mode coupling based on a scalar wave equation is presented. The directional coupling via the adiabatic mode coupling between copropagating modes is described and compared with a nonadiabatic directional coupling assisted by periodic perturbation. It is shown that adiabatic directional coupling has much less sensitivity to the mode parameters and to the wavelength

Keywords

coupled mode analysis; optical directional couplers; optical waveguide theory; periodic structures; adiabatic coupling; adiabatic three-mode coupling; analytical model; copropagating modes; directional coupling mechanism; high-order intermediate mode; mode parameter sensitivity; multimode optical waveguides; nonevanescent adiabatic directional coupler; optical power transfer; periodic structure; scalar wave equation; waveguides; wavelength sensitivity; zero-order optical modes; Directional couplers; Nonlinear optics; Optical coupling; Optical filters; Optical refraction; Optical sensors; Optical surface waves; Optical variables control; Optical waveguides; Partial differential equations;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.952544

Filename

952544