this invention relates to an alignment apparatus for aligning a planar optical wave - guide element and an optical fiber block wherein alignment can be completed with more precision and less expense than conventional methods . the alignment apparatus comprising a lower plate ; a sliding table mounted on the lower plate capable of horizontal displacement on the lower plate ; an upper plate mounted to the sliding table ; and , a jig disposed on the upper plate and fixed to rotational means and capable of rotation about the upper plate for holding the optical fiber block .