This article is cited in 4 papers

Application of the WKB method in determination of the refractive-index profile of planar diffused waveguides

V. G. Pan'kin, V. Yu. Pchelkin, V. V. Shashkin


Abstract: An analysis is made of the potentialities of the quasiclassical approximation and a method is proposed for the determination of the refractive index profile directly from experimental values of the effective refractive indices of multimode planar waveguides formed by diffusion. The method proposed is used to determine the refractive index profile of waveguides formed by the diffusion of titanium into a lithium niobate substrate.

UDC: 621.372.833.1

PACS: 42.80.Lt

Received: 29.04.1976
Revised: 28.08.1976

 English version: Soviet Journal of Quantum Electronics, 1977, 7:7, 846–849