Process for producing optical waveguide

Details Process for producing optical waveguide Process for producing optical waveguide

2007-09-11

2007-09-11

McPherson, John A (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

Reexamination Certificate

active

11194456

ABSTRACT:
The present invention provides a process for producing an optical waveguide, comprising the steps of: continuously applying a fluorene derivative layer onto a continuous substrate and curing the layer to thereby form a lower cladding layer; continuously applying a photosensitive fluorene derivative layer onto the lower cladding layer; continuously exposing the applied photosensitive fluorene derivative layer to a light through a photomask having a predetermined pattern; continuously subjecting the exposed photosensitive fluorene derivative layer to post-exposure heating; continuously developing the heated photosensitive fluorene derivative layer to remove the unexposed areas therein, thereby forming into the predetermined pattern; curing the developed photosensitive fluorene derivative layer to thereby form a core layer having the predetermined pattern on the lower cladding layer; and continuously applying a fluorene derivative layer over the lower cladding layer so as to cover the core layer and curing the fluorene derivative layer to thereby form an upper cladding layer.

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Patent Abstracts of Japan—2001192433 (2001) Sakamoto Hironori “Epoxy Resin Composition and its Cured Product”.
European Search Report dated Nov. 22, 2005.

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