Title :
Electro-optic directional coupler switch characterization
Author :
Wongcharoen, T. ; Rahman, B. M Azizur ; Grattan, Kenneth Thomas V
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng., City Univ., London, UK
fDate :
2/1/1997 12:00:00 AM
Abstract :
Results are presented on a study of the important parameters of synchronous and nonsynchronous, weakly and strongly coupled optical directional couplers using the finite element method. Accurate propagation constants and field profiles have been obtained for the modes of the isolated guides and the supermodes of the coupled system. The power transfer efficiency between nonidentical coupled optical waveguides has been calculated using the coupled mode, the least squares boundary residual and the finite element-based propagation methods. To show the advantages of the finite element-based approaches, the power transfer efficiency between coupled waveguides with two-dimensional confinement is presented
Keywords :
coupled mode analysis; electro-optical switches; finite element analysis; least squares approximations; optical constants; optical couplers; optical directional couplers; optical waveguide theory; accurate propagation constants; coupled mode analysis; coupled system supermodes; electro-optic directional coupler switch characterization; field profiles; finite element method; finite element-based approaches; finite element-based propagation methods; isolated guide modes; least squares boundary residual methods; nonidentical coupled optical waveguides; nonsynchronous optical directional couplers; power transfer efficiency; strongly coupled optical directional couplers; synchronous optical directional couplers; two-dimensional confinement; weakly coupled optical directional couplers; Directional couplers; Finite element methods; Optical coupling; Optical devices; Optical modulation; Optical refraction; Optical switches; Optical variables control; Optical waveguides; Propagation constant;
Journal_Title :
Lightwave Technology, Journal of
