Plastic optical fiber ferrule and method for making the same

摘要

An insert pipe (1) is fitted on an outer circumferential surface of a front end of a ferrule provided with a core wire receiving bore (5) in an axial center thereof, and a small-diameter tubular portion (10) is insert molded coaxially with respect to the insert pipe (4) around the core wire receiving bore adjacent to the front end, a thin-walled plastic portion (8) being formed inside the small-diameter tubular portion. A plastic reservoir may be provided in a part of the plastic ferrule remote from the front end of the core wire receiving bore. The provision of the thin-walled plastic portion and/or the plastic reservoir prevents the tapering of the core wire receiving bore due to thermal shrinkage following the injection molding process.