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Optical and Quantum Electronics

, Volume 10, Issue 1, pp 17–29 | Cite as

The cladded parabolic-index profile waveguide: analysis and application to stripe-geometry lasers

  • M. J. Adams
Papers

Abstract

A two-dimensional real waveguide having a parabolic distribution of dielectric permittivity in the core region, flanked by cladding layers of constant refractive index is proposed as a model for a class of stripe-geometry injection lasers. The model is analysed by a series-solution method and results are given in terms of plots of normalized propagation constant, near-field filling factor, and far-field half-angle, all versus normalized frequency. These results are compared with those for the alternative models of (a) a homogeneous core waveguide, and (b) a medium whose dielectric permittivity varies quadratically with position throughout the whole of space.

Apart from the series-solution method which was employed, a survey is included of other techniques available for analysing this waveguide model. These include perturbation theory, variational analysis, an exact solution of the scalar wave equation, and the WKB approximation.

Keywords

Refractive Index Wave Equation Dielectric Permittivity Core Region Filling Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • M. J. Adams
    • 1
  1. 1.Department of ElectronicsThe UniversitySouthampton

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