G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/10 (2006.01) B29C 39/10 (2006.01) C08G 73/10 (2006.01) C08L 79/08 (2006.01) G02B 6/122 (2006.01) G02B 6/12 (2006.01)
Patent
CA 2041133
ABSTRACT OF THE DISCLOSURE An optical waveguide which has properties including low optical losses, facile fabrication, controllable core - cladding refractive index ratio, and 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: Image [I]; (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.
Ando Shinji
Ichino Toshihiro
Koike Shinji
Matsuura Toru
Nishi Shiro
Marks & Clerk
Nippon Telegraph & Telephone Corporation
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