an optical connector has a ferrule for accommodating an optical fiber . the ferrule includes a glass capillary and a coating . the glass capillary is formed at the distal end portion of the ferrule and is inserted in a ceramic sleeve that performs optical connection . the glass cylinder has a first through hole at the central axis portion thereof to accommodate a bare optical fiber . the coating is made of a material having a higher hardness than that of the sleeve , and coats an entire outer circumferential surface of the glass capillary . a method of manufacturing an optical connector is also disclosed .