Photonic band gap guidance in optical fibers.

Knight, JC; Broeng, J; Birks, TA; Russell, PSJ · Science · 1998

basic_science · Level V

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Abstract

A fundamentally different type of optical waveguide structure is demonstrated, in which light is confined to the vicinity of a low-index region by a two-dimensional photonic band gap crystal. The waveguide consists of an extra air hole in an otherwise regular honeycomb pattern of holes running down the length of a fine silica glass fiber. Optical fibers based on this waveguide mechanism support guided modes with extraordinary properties.