Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1991-12-16
1993-05-18
Healy, Brian
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
385 28, 385 29, 385131, 385129, G02B 610
Patent
active
052127591
ABSTRACT:
A waveguide structure includes a substrate, a waveguide film, and an overlay material in contact with the waveguide film. The overlay material may also contact the substrate or the film may be disposed between the overlay and the substrate. The overlay material has a higher refractive index than the waveguide so that the ratio of the effective refractive indexes is substantially constant for all propagating modes supported by the waveguide.
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Brazas, Jr. John C.
Kohnke Glenn E.
Eastman Kodak Company
Healy Brian
Walker Robert Luke
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