The present invention relates to a universal optical fiber connector including a hot-melt end connector assembly, a heat-shrinkable sleeve and a protective shell for the heat-shrinkable sleeve. The assembly further comprises the main body of the hot-melt end, and a ceramic ferrule, a wedge for the ceramic ferrule and a pre-embedded optical fiber passing through the main body. The tail end of the protective shell for the heat-shrinkable sleeve is connected with an optical fiber locking device for the locking of the optical fiber; the locking device and the protective shell for the heat-shrinkable sleeve are separately configured. The present invention is applicable to optical fibers of different sizes and can improve the tensile properties of the optical fiber connector, and the protective shell for the heat-shrinkable sleeve can be volume-produced with the same mould instead of being produced independently for each type, so as to improve the production efficiency.

A pigtail fiber module comprises: a large mode area fiber (LMA fiber) 10 having a fiber core wire 1 composed of a core where single-mode light travels and a clad, and a protective coating 2 surrounding the core wire; and a fiber holding member, and has the following structure. The fiber holding member includes a ferrule 20 having a through hole 21, and a capillary 30 having a narrow hole 31 and incorporated in a tip end side of the ferrule. The narrow hole houses the fiber core wire of the LMA fiber. The through hole houses the LMA fiber having the protective coating. An end portion of the narrow hole at the through hole side is provided with a sealing member 40 for sealing a gap between the fiber core wire and the narrow hole and shutting the narrow hole off from the through hole, and the protective coating is fixed to the through hole with a thermosetting adhesive.

Hardened fiber optic connectors having a mechanical splice assembly are disclosed. The mechanical splice assembly is attached to a first end of an optical waveguide such as an optical fiber of a fiber optic cable by way of a stub optical fiber, thereby connectorizing the hardened connector. In one embodiment, the hardened connector includes an inner housing having two shells for securing a tensile element of the cable and securing the mechanical splice assembly so that a ferrule assembly may translate. Further assembly of the hardened connector has the inner housing fitting into a shroud of the hardened connector. The shroud aides in mating the hardened connector with a complimentary device and the shroud may have any suitable configuration. The hardened connector may also include features for fiber buckling, sealing, cable strain relief or a pre-assembly for ease of installation.

According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including a ferrule containing an optical fiber conducting light; a holder holding the fiber stub; and a sleeve, one end of the sleeve being capable of holding a tip of the fiber stub, one other end of the sleeve being capable of holding a plug ferrule inserted into the optical receptacle, the ferrule including a foreign matter movement suppressor in an end surface of the ferrule, the end surface being polished into a convex spherical configuration on a side to be connected to the plug ferrule, the foreign matter movement suppressor suppressing movement of foreign matter moving, due to inserting and removing the plug ferrule, from an outer circumferential portion of the ferrule toward a central portion of the end surface. It is possible to prevent the loss occurring due to the foreign matter at the outer circumferential portion of the fiber stub moving to the central portion of the end surface of the ferrule when repeatedly inserting and removing the plug ferrule into and from the optical receptacle; and it is possible to reduce the Wiggle loss by maintaining the length where the sleeve holds the fiber stub.

An optical component assembly includes a light-guiding member; a cylindrical member which retains the light-guiding member in a through hole thereof; and a projection which is provided at one end of the cylindrical member so as to extend beyond an outer periphery of the cylindrical member, and is engageable in a groove which is formed in a cylindrical shell so as to extend in an axial direction of the cylindrical shell and then turn at a distal end thereof in a circumferential direction of the cylindrical shell. By fixing the cylindrical shell to the projection, the cylindrical shell becomes attachable and detachable. It is possible to provide an optical receptacle and a transceiver module for optical communications having easy removal of foreign matters.

A fiber optic connector comprises a connector body, a ferrule, and a boot. The ferrule has a rear portion supported within the connector body and a front portion extending beyond a front end of the connector body. The boot has a front portion within the connector body and a funnel-shaped portion that extends beyond a back end of the connector body. The funnel-shaped portion defines a boot back end. Additionally, the funnel-shaped portion includes a tapered passage on an interior of the boot and a lip on an exterior of the boot. The tapered passage and the lip are curved toward each other proximate the boot back end so that the funnel-shaped portion terminates with a rounded configuration.

A fiber optic cable assembly includes a fiber optic cable and a fiber optic connector. The cable includes a jacket having an elongated transverse cross-sectional profile that defines a major axis and a minor axis. Strength components of the cable are anchored to the connector. The fiber optic connector includes a multi-fiber ferrule defining a major axis that is generally perpendicular to the major axis of the jacket and a minor axis that is generally perpendicular to the minor axis of the jacket. Certain types of connectors include a connector body defining a side opening that extends along a length of the connector body; a multi-fiber ferrule configured for lateral insertion into the connector body through the side opening; and a cover that mounts over the side opening after the multi-fiber ferrule has been inserted into the connector body through the side opening.

An optical fiber connector of a networking module faceplate assembly includes a shuttle body, a connection assembly, and a retention clip. The shuttle body including a fiber slot extending across the shuttle body and adapted for an optical fiber to extend therethrough. The connection assembly is adapted to connect the optical fiber of the networking module to an external optical fiber connector. The connection assembly includes a ferrule flange fiber termination, a split sleeve, and a ferrule. The ferrule flange fiber termination positioned within the shuttle body and adapted to splice to an end of the optical fiber. A length of the optical fiber connector can be less than half a length of the external optical fiber connector.

The present disclosure relates to an optical fiber alignment device that has an alignment housing that includes first and second ends. The alignment housing defines a fiber insertion axis that extends through the alignment housing between the first and second ends. The alignment housing includes a fiber alignment region at an intermediate location between the first and second ends. First and second fiber alignment rods are positioned within the alignment housing. The first and second fiber alignment rods cooperate to define a fiber alignment groove that extends along the fiber insertion axis. The first and second fiber alignment rods each having rounded ends positioned at the first and second ends of the alignment housing.

An indexing terminal arrangement includes a terminal housing that receives an input cable; an optical power splitter disposed within the interior of the terminal housing; a first multi-fiber optical adapter coupled to the terminal housing; a first single-fiber optical adapter coupled to the terminal housing; and a pass-through multi-fiber optical adapter coupled to the terminal housing. Split optical signals are provided to the first multi-fiber optical adapter and the first single-fiber optical adapter. Unsplit and indexed optical signals are provided to the pass-through optical adapter.