| 摘要 |
PURPOSE:To form a complex waveguide with printing by forming a smooth interface between two kinds of a low viscosity resin compositions and by printing an unnecessary part of the optical waveguide pattern on the above-described interface with an another kind of the resin composition. CONSTITUTION:An uncured core layer 3 coated with a printed layer 5 forms a compatible layer 6 which is compatible with the layer 5, and the layer 6 leaves in an uncured state, even if the layer 6 reaches to a curing temp. The 1st clad layer 2 and a core 7 provided on a base plate 1 are wholly coated with a resin composition so as to make one body except a light inlet and an outlet of the optical waveguide 4, and baked and cured at a temp. of 180 deg.C, thereby making the 1st clad layer 2 and the 2nd clad layer 10 to one body. Therefore, the core 7 is completely coated with a clad 11 composed of the 1st and 2nd clad layers 2 and 10, thereby forming the waveguide 4 on the base plate 1. Since the unnecessary resin part which does not from the clad and the core is dissolved and removed together with the unnecessary part excepting the waveguide forming part, the desired pattern may be easily printed on the base material in spite of being rough on a surface and the interface. |
