Abstract: An optical connector according to the present invention has a ferrule body provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: A pair of guide holes for guide pin insertion and one or a plurality of optical fiber positioning holes extending inwardly from the front end surface are formed in a connector ferrule of an optical connector. A chamfer is formed on the opening edge portion of the guide hole of the connector ferrule on the front end surface side thereof. The opening diameter R of the guide hole at the front end surface is preferably 1.0 to 1.5 mm when the front end surface is slant polished at an angle of 8 degrees. Furthermore, the chamfering angle &thgr; of the chamfer is preferably 90 to 150 degrees. Moreover, the average particle size of the filler contained in the connector ferrule is no more than 20 &mgr;m. As a result, the surface of the chamfer is comparatively smooth.

Abstract: An optical connector comprising a ferrule including an optical fiber, wherein a hollow portion for optical fiber protrusion is formed on a front end face of the ferrule, the optical fiber is inserted into an optical fiber positioning hole extended from an optical fiber protrusion port provided on a bottom face of the hollow portion toward an inside of the ferrule, and a tip face of the optical fiber is drawn in the hollow portion. This makes it possible to provide an optical connector which can shorten a time for assembly and can be assembled easily and inexpensively.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: In an optical connector for securing an optical fiber by inserting it into an optical fiber positioning hole of a connector ferrule body, an end face of the optical fiber is disposed within the optical fiber positioning hole, a predetermined length region of the optical fiber on the end face side is in a free state adapted to expand and contract, and the end face of the optical fiber is buried in a refractive index matching material filling near an opening portion of the optical fiber positioning hole.

Abstract: An optical fiber holder 1B is an optical fiber holder for holding a plurality of optical fibers in line, and includes a base member 20 with a plurality of parallel positioning grooves 90 for positioning and aligning the plurality of optical fibers, and a lid member 32 adapted to cover the plurality of positioning grooves 90 and to fix the plurality of optical fibers, arranged in the positioning grooves 90, by pressing against the bottom portions of the positioning grooves 90. The lid member 32 has small projections 102 on its portion which comes into contact with the optical fibers.

Abstract: An optical transmission component and a method of making the same in which one or a plurality of optical fibers 1 are fixed to a main body 3 of the optical transmission component with one end face of each optical fiber being exposed, and thus exposed end face is used as a connecting end face to be optically connected to another optical transmission component. The coating 1b of each optical fiber 1 is removed, so as to expose a predetermined length of an optical fiber 1a. An end face 1c of thus exposed optical fiber is processed by spark discharge processing in a short period of time, such that at least the front end of a core portion projects from the front end of its cladding portion. Thus processed optical fiber 1 is inserted into the main body and fixed thereto with an adhesive 5, while a predetermined pressure is being added along the optical axis of each optical fiber 1 from the end face 1c side.

Abstract: An optical connector comprising a ferrule including an optical fiber, wherein a hollow portion for optical fiber protrusion is formed on a front end face of the ferrule, the optical fiber is inserted into an optical fiber positioning hole extended from an optical fiber protrusion port provided on a bottom face of the hollow portion toward an inside of the ferrule, and a tip face of the optical fiber is drawn in the hollow portion. This makes it possible to provide an optical connector which can shorten a time for assembly and can be assembled easily and inexpensively.

Abstract: An optical connector includes a first ferrule which holds the ends of a first optical fiber unit including at least one optical fiber, and a housing. The housing is a U-shaped member with parallel arms extending in the lengthwise direction of the first optical fiber unit. The housing surrounds one of the widthwise sides of the first ferrule from which the first optical fiber unit is derived and the lengthwise sides of the first ferrule, whereby the housing accommodates the first ferrule. The housing receives a second ferrule which holds the ends of a second optical fiber unit including at least one optical fiber through the U-shaped opening. The housing surrounds the lengthwise side of the second ferrule and a part of the side of the second ferrule from which the second optical fiber unit is derived, whereby the first and second ferrules are coupled together.

Abstract: A fiber optic connector ferrule in which a coating-accommodating portion for mounting a coated portion of an optical fiber and maintaining the optical fiber such that the axis thereof becomes substantially straight from the mounted portion to the front end is formed behind a fiber-arranging hole by the steps of: disposing one or a plurality of mold pins each having a columnar portion formed on a distal end side thereof and a prismatic portion, disposed on a proximal end side thereof, having substantially a quadrangular cross section, with side faces of the prismatic portions being in contact with each other, within a mold such that each mold pin is slidable in an axial direction of the columnar and prismatic portions; and filling the mold with a resin, and axially pulling off each mold pin after the resin is cured, thereby causing the columnar portion to form the fiber-arranging hole and causing the prismatic portion to form the coating-accommodating portion for mounting the coated portion.

Abstract: The ferrule 7 of the optical connector in accordance with the present invention has an optical fiber inserting portion 11 extending inward from an optical connection opening 10 formed in the nose surface 9, thereby projecting the end portion of an optical fiber 8 from the optical connection opening 10 in the nose surface 9. The nose surface 9 has a first flat portion 15 and a second flat portion 14. The second flat portion 14 extends while including the optical connection opening 10 therein. The first flat portion 15 extends so as to project ahead of the second flat portion 14.

Abstract: An optical connector includes a first ferrule which holds the ends of a first optical fiber unit including at least one optical fiber, and a housing. The housing is a U-shaped member with parallel arms extending in the lengthwise direction of the first optical fiber unit. The housing surrounds one of the widthwise sides of the first ferrule from which the first optical fiber unit is derived and the lengthwise sides of the first ferrule, whereby the housing accommodates the first ferrule. The housing receives a second ferrule which holds the ends of a second optical fiber unit including at least one optical fiber through the U-shaped opening. The housing surrounds the lengthwise side of the second ferrule and a part of the side of the second ferrule from which the second optical fiber unit is derived, whereby the first and second ferrules are coupled together.

Abstract: An optical connector in which an optical fiber is fixed within a ferrule such that a tip of the optical fiber is disposed at a front end face position of the ferrule. An optical-fiber-positioning hole formed so as to directly extend into the ferrule from an optical connecting orifice formed in the front end face of the ferrule has a diameter greater than a diameter of the optical fiber positioned within the optical-fiber-positioning hole, the optical-fiber-positioning hole having therein a compressible unfixing area for allowing the optical fiber to compress along the optical-fiber-positioning hole, and a fixing area, disposed behind the compressible unfixing area, for fixing the optical fiber to the ferrule.