OPTICAL WAVEGUIDE, OPTO-ELECTRONIC CIRCUIT BOARD, AND METHOD OF FABRICATING OPTO-ELECTRONIC CIRCUIT BOARD

摘要

An optical waveguide includes first cores provided on a first clad layer, second cores provided on a second clad layer, and a common clad layer interposed between the first and second clad layers and opposing the first and second cores, and the first cores are separated from the second cores.