COUPLING OPTICAL FIBRE TO WAVEGUIDE

摘要

An apparatus is provided for coupling an optical fibre (1) to a waveguide (3) on an optical chip, the apparatus comprises a recess in the chip for receiving the optical fibre, the recess comprising a V-groove (2) the side faces of which locate the position of the fibre in directions perpendicular to the optical axis of the fibre so as to position the fibre in alignment with the waveguide, and an end face (4A) adjacent the end of the waveguide, the end face (4A) of the recess being substantially flat and substantially perpendicular to the plane of the chip with its normal inclined to the optical axis of the waveguide so an optical fibre having an inclined end face (2A) can be brought into a close, abutting relationship with the end of the waveguide and brought into rotational alignment therewith about its optical axis by positioning the fibre so its inclined end face lies in planar contact with the end face of the recess.