| 摘要 |
PURPOSE:To facilitate the generation and to improve the profitability by connecting a flexible waveguide film which has been bent to a U-shape to input/output optical fibers and using it. CONSTITUTION:A waveguide type liquid detector is formed by connecting input/ output optical fibers 3, 4, respectively to each end of a waveguide 2 obtained by bending to a U-shape a flexible organic substance film which has formed a waveguide by irradiating with a light beam and polymerizing a monomer of an exposing part in a state that masking has been performed to a sheet of a mixture of, for instance, a base organic high polymer and the monomer for varying its refractive index. In this state, by a liquid 5 which has adhered to the top part of the U-shaped bend part of this detector, an incident light is radiated into the air, a total reflectivity of the waveguide 2 is varied substantially and the liquid 5 is detected. By this cutting working, etc., the waveguide type liquid detector which can be generated easily and whose profitability is high is obtained by the constitution by which it is unnecessary to generate a flat part in the waveguide. |
