Polyimide optical waveguide

Details Polyimide optical waveguide Polyimide optical waveguide

1991-04-26

1992-04-28

Lee, John D.

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

385123, 385129, G02B 104, G02B 616

Patent

active

051082012

ABSTRACT:
An optical waveguide which has properties including low optical losses, facile fabrication, controllable core-cladding refractive index ratio, and a high heat resistance is provided. The optical waveguide for light transmission therethrough has a core made of a polyimide obtained from at least one tetracarboxylic acid dianhydride and at least one diamine. The polyimide is (a) a polyimide homopolymer derived from a diamine represented by formula [I] as follows: ##STR1## (b) a polyimide copolymer derived from at least one diamine including the diamine represented by the formula [I]; or (c) a mixture of the polyimide homopolymers.

REFERENCES:
patent: 4941729 (1990-07-01), Hardin et al.
patent: 4969706 (1990-11-01), Hardin et al.
patent: 5024506 (1991-06-01), Hardin et al.

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