Optical chip structure and optical communication package

An optical chip structure, adapted for coupling an optical fiber array, wherein the optical fiber array comprises a plurality of optical fibers arranged side by side, and the optical chip structure comprises:

• an optical fiber coupling substrate;
• a plurality of optical fiber accommodation grooves adapted to accommodate the optical fiber array, wherein the optical fiber accommodation grooves extend along a first axis and are arranged side by side in the optical fiber coupling substrate along a second axis, the first axis is perpendicular to the second axis, the optical fiber accommodation grooves respectively comprise a plurality of first ends and a plurality of second ends opposite to each other, and the first ends are located at an edge of the optical chip structure;
• and
• a plurality of stoppers located in the optical fiber coupling substrate and respectively located at the second ends, wherein when the optical fiber array is accommodated in the optical fiber accommodation grooves, the optical fibers are respectively abutted against the stoppers to position in the first axis,
• wherein each of the stoppers comprises an insertion hole facing the corresponding optical fiber accommodation groove, the optical fiber is adapted to insert into the insertion hole, the insertion hole comprises a stepped inner surface to form a plurality of sections with different apertures and a plurality of abutment surfaces corresponding to the sections, and the optical fiber is adapted to be abutted against one of the abutment surfaces to position in the first axis.