Portland State University. Department of Electrical and Computer Engineering
Lee W. Casperson
Date of Award
Master of Science (M.S.) in Electrical Engineering
Electrical and Computer Engineering
1 online resource (85 p.)
Beam optics, Dielectric wave guides, Optical fibers, Wave equation -- Numerical solutions, Inhomogeneous materials -- Optical properties
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.
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.