METHOD FOR FABRICATION OF POLYMER OPTICAL WAVEGUIDE AND POLYMER OPTICAL WAVEGUIDE

摘要

A method for fabrication of a polymer optical waveguide which has a core layer, a lateral cladding layer, a lower cladding and an upper cladding layer, the method characterized as comprising the steps of coating a polysilane composition containing polysilane and an organic peroxide onto the lower cladding layer to form a polysilane layer which corresponds to the core layer and the lateral cladding layer, and exposing a region of the polysilane layer that corresponds to the lateral cladding layer to an ultraviolet radiation to render the exposed region lower in refractive index than the unexposed region so that the exposed region constitutes the lateral cladding layer and the unexposed region constitutes the core layer.