Photodefinable optical waveguides

Details Photodefinable optical waveguides Photodefinable optical waveguides

1992-12-22

1994-05-31

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528171, 528173, 528183, 528185, 528188, 528220, 528229, 528351, 385123, 385129, 385142, 385143, 385144, 385145, C08G 7310, G02B 104, G02B 616

Patent

active

053170822

ABSTRACT:
Polyimide optical waveguide structures comprising a core within a cladding wherein at least one of the core and the cladding is a polyimide containing 6FDA, BTDA, an aromatic diamine having bulky methyl groups ortho to the amine, and a co-diamine wherein the polyimides have the properties of low optical loss, low optical absorbance, controllable refractive index, and high thermal stability, and wherein the polyimides are photosensitive and solvent resistant.

REFERENCES:
patent: 4595548 (1986-06-01), St. Clair et al.
patent: 4603061 (1986-07-01), St. Clair et al.
patent: 4657832 (1987-04-01), Pfeifer
patent: 4705540 (1987-11-01), Hayes
patent: 4717393 (1988-01-01), Hayes
patent: 4912197 (1990-03-01), Hayes
A. K. St. Clair and W. S. Slemp, NASA LAR-13539 "Evaluation of Colorless Polyimide Film for Thermal Control Coating Applications".
E. S. Moyer, Thesis Virginia Polytech Institute, 1989, "Photocrosslinkable Polyimide and Poly(imide Siloxane) Homo and Copolymers: Synthesis and Characterization" (pp. 119-120, 164-169).

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