| 摘要 |
The present invention relates to a method for preparing an optical. waveguide device which comprises a step of forming a V-shaped groove on a substrate; a step of applying a filling polymer-containing coating solution having an NV value of not less than 35% onto the substrate, drying the applied coating solution and then removing the unnecessary filling polymer so that the filling polymer remains only in the V-shaped groove; forming an optical waveguide consisting of a polymer on the substrate; a step of making a cut at a position corresponding to the end face of the optical waveguide; and a step of removing all the polymer present in and on the V-shaped groove. The method permits the solution of such a problem that when preparing an optical waveguide device, a coating solution of a polymer used for forming the core and clad layers thereof undergoes sagging and running towards the openings of the neighboring V-shaped grooves so that the level of the core center is lower than the designed level thereof and the method thus permits the production of an optical waveguide device completely free of any deviation of the core center. |
