Portland State University. Department of Electrical and Computer Engineering
Lee W. Casperson
Date of Publication
Master of Science (M.S.) in Electrical Engineering
Electrical and Computer Engineering
Beam optics, Dielectric wave guides, Optical fibers, Wave equation -- Numerical solutions, Inhomogeneous materials -- Optical properties
1 online resource (85 p.)
The propagation of light beams in inhomogeneous dielectric media is considered. The derivation begins with first principles and remains general enough to include off-axis asymmetric multimode input beams in tapered lenslike media with spatial variations of gain or loss. The tapering of lenslike media leads to a number of important applications. A parabolic taper is proposed as a model for a heated axially stretched fiber taper, and beams in such media are fully characterized. Other models are proposed by the concatenation of a parabola with other taper functions.
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Tovar, Anthony Alan, "Off-axis multimode light beam propagation in tapered lenslike media including those with spatial gain or loss variation" (1988). Dissertations and Theses. Paper 3839.