Optical waveguides

Details Optical waveguides Optical waveguides

1989-06-23

1990-09-25

Lee, John D.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

350 963, 430270, 430 32, 428515, 252582, G02B 610

Patent

active

049588958

ABSTRACT:
A thin film optical waveguide made of a polymeric waveguiding film supported on a substrate, the film being made of a homopolymer of vinylpyridine or of a derivative or vinylpyridine in which the pyridine heterocyclic nucleus is substituted. Alternatively, a copolymer containing a major proportion of vinlypyridine, or of said derivative thereof, may be used in the film. A layer of a material having a lower refractive index may cover the film. The polymer may be modified to increase its capacity for refractive index variation in response to an electric field, by inclusion in the structure of the polymer of at least one optically nonlinear moiety. The polymer may also include cross-linking. The thin film optical waveguide may incorporate a laser dye in the film, for use with laser devices.

REFERENCES:
patent: 3809732 (1974-05-01), Chandross et al.
patent: 3955015 (1976-05-01), Ohtsuka et al.

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