Title :
Optical properties of metal-clad/Pb1-xSnxTe waveguides
Author :
Shahar, A. ; Zussman, A.
Author_Institution :
Dept. of Solid State Phys., Soreq Nucl. Res. Centre, Yavne, Israel
fDate :
10/1/1988 12:00:00 AM
Abstract :
The optical characteristics of a metal/p-Pb1-xSnxTe/p+ -Pb1-xSnxTe three layers waveguide were studied. The effective index, propagation losses and electric field distribution of the TE-modes were calculated numerically. Approximate expressions for the losses derived by first-order perturbation methods were found to agree with the exact solutions. The conditions for transversal and lateral single-mode operation of the waveguide were discussed. The coupling constant of a metal/Pb1-x SnxTe DFB waveguide produced by periodic variation in the active layer thickness and on-off metal contact modulation was calculated by the perturbation technique
Keywords :
IV-VI semiconductors; lead compounds; optical waveguides; tin compounds; DFB waveguide; PbSnTe; TE-modes; electric field distribution; metal contact modulation; metal-clad waveguides; optical characteristics; perturbation technique; semiconductors;
Journal_Title :
Optoelectronics, IEE Proceedings J
