Planar light waveguide circuit with landmarks

摘要

A planar light waveguide circuit includes a plurality of landmarks arranged on the planar light waveguide circuit at intervals of a specific gap starting from a cut section of the planar light waveguide circuit so as to increase the uniformity of a coupling loss that occurs when connecting the planar light waveguide circuit in alignment with optical fiber blocks, wherein the landmarks are formed onto the planar light waveguide circuit so as to enable an operator to monitor a permissible angle error, and wherein Arabic numerals or specific symbols are marked in association with the landmarks to help the operator distinguish the landmarks.