Abstract

An optical beam waveguide consisting of a central aperture and a surrounding lens—a hybrid lens guide—possesses some important advantages of both iris guides and lens guides. Compared to an iris guide, it has a lower loss, and for small curvatures, is less sensitive to bends. Also it is less subject to breakdown than a lens guide. A theoretical study is presented. The hybrid lens guide can be specified by four parameters; the loss is investigated as a function of each. The effects of bending and a method to reduce such effects are also discussed.

© 1973 Optical Society of America

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Equations (7)

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