Acta Optica Sinica, Volume. 14, Issue 11, 1223(1994)
Dispersion Equations of Inhomogeneous Planar Optical Waveguides
A new method for obtaining the analytical dispersion characteristics of planar waveguides with arbitrary refractive index profile is presented. The method is based on the transfer matrix theory and a new interpretation of the WKB approximation is proposed. A comparison with other methods and the exact numerical results shows that our method is much more accurate than the ordinary WKB method and other existing approximate methods.
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[in Chinese]. Dispersion Equations of Inhomogeneous Planar Optical Waveguides[J]. Acta Optica Sinica, 1994, 14(11): 1223