OPTICAL WAVEGUIDE CIRCUIT COMPONENT AND PRODUCTION METHOD THEREFOR

摘要

An optical waveguide circuit component comprising a core formed of quartz selectively added with a dope agent on a quartz substrate structure, and a clad layer consisting of quartz provided on the substrate surface, characterized in that a lid or a cover member is fixed onto the clad layer by thermocompression bonding. This structure can limit a polarization-dependency loss (PDL) level that will occur when the clad layer and the lid are bonded together.