Controllable optical waveguide

Details Controllable optical waveguide Controllable optical waveguide

1985-02-07

1988-04-12

Lee, John

350 9614, 350 9632, 350 9634, 350347V, G02B 616

Patent

active

047370149

ABSTRACT:
A controllable optical waveguide includes a core through which light can propagate and cladding around the core, at least one of the core and cladding having plural portions made of a material having a refractive index which varies in response to an applied electric field. A plurality of electrode pairs are arranged so as to each be able to apply an electric field to a respective one of the portions of the material in a manner effecting a change in its refractive index. Each electrode pair includes two electrodes which each have a plurality of fingers, the fingers of one electrode of each pair being interdigitated with those of the other electrode of the pair. As the electric field produced by a given electrode pair varies, the refractive index of the corresponding portion of the material varies in a manner causing the waveguide to retain light or to allow light to escape through such portion.

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