Title :
Loss/gain characterization of optical waveguides
Author :
Themistos, Christos ; Rahman, B. M Azizur ; Hadjicharalambous, Angelos ; Grattan, Kenneth Thomas Victor
Author_Institution :
Dept. of Electr. & Electron. Eng., City Univ., London, UK
fDate :
8/1/1995 12:00:00 AM
Abstract :
Finite element analysis employing the vector H-field formulation, with the aid of the perturbation technique, is used to calculate modal loss or gain for several different types of optical waveguides. Further, the complex propagation constant of an optical waveguide is obtained from the solution of the complex transcendental equation and the use of the effective index approach. Results obtained by both methods for different optical waveguides are found to be in good agreement for a wide range of gain/loss values. The accuracy limit for modal loss or gain calculation using the perturbation technique is also examined
Keywords :
finite element analysis; optical constants; optical losses; optical waveguide theory; optical waveguides; permittivity; perturbation theory; refractive index; complex propagation constant; complex transcendental equation; effective index approach; finite element analysis; gain calculation; gain/loss values; loss/gain characterization; modal gain; modal loss; optical waveguides; perturbation technique; vector H-field formulation; Equations; Optical losses; Optical refraction; Optical variables control; Optical waveguides; Perturbation methods; Propagation constant; Propagation losses; Semiconductor waveguides; Transmission line matrix methods;
Journal_Title :
Lightwave Technology, Journal of
