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A simple, generalized method of analyzing the light
transmission in leaky and absorbing planar waveguides is
proposed in this thesis. We use a straightforward and
intuitive manner to derive the analytical expression
of the power transmission discussed. By utilizing the
well-known law for the partial reflection of a plane wave at an
interface and the Goos-Hanchen shift happened for the case of
total internal reflection, the associated power
transmission of the above structure is derived.
Advantages of the present method are simple and applicable
to multilayer structures with ease. For comparisons, the
existing formula for this waveguiding structures is overviewed,
and numerical calculations are compared well with our and
the other method. An extension of this approach is applied
to a medium-clad side-polished single-mode fiber.
Calculations based on our simplified method and an
expression derived from the sophisticated coupled-mode
theory are also made. Our results can explain the behaviors of
the light transmission in the above structure. It is still far
from satisfaction because some assumptions are made too
rough, however. Further works in this subject are needed. In
summary, this thesis introduces a simple and interesting
approach to analyze the light transmission in leaky and
absorbing planar and fiber-optic waveguides. The previous
subject is important in designing and analyzing optical
waveguide components.
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