Plastic optical fiber ferrule

摘要

An insert pipe is fitted on an outer circumferential surface of a front end of a ferrule provided with a core wire receiving bore in an axial center thereof, and a small-diameter tubular portion is insert molded coaxially with the insert pipe 4 around the core receiving bore adjacent to the front end, a thin-walled plastic portion 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.