Abstract: An optical connector for connecting optical fibers, comprises: a guide-groove substrate having grooves for positioning optical fibers and guide pins; an upper plate having groove portions each for covering the guide pins positioned in the guide grooves of the guide-groove substrate; elastic guide-pin pressing members each provided in the groove portions of the upper plate above portions where the guide pin grooves are in contact with the guide pins. In such a arrangement, it is preferable to form an oxide film on said V-grooves of the guide-groove substrate at least in the vicinity of contact points between the guide pins and the V-grooves. The optical connector further includes a resin molding portion for surrounding the substrate and the upper plate, the resin molding portion including a pair of opposite opened portions at a front and back surfaces thereof.

Abstract: An optical connector for connecting optical fibers, comprises: a guide-groove substrate having grooves for positioning optical fibers and guide pins; an upper plate having groove portions each for covering the guide pins positioned in the guide grooves of the guide-groove substrate; elastic guide-pin pressing members each provided in the groove portions of the upper plate above portions where the guide pin grooves are in contact with the guide pins. In such a arrangement, it is preferable to form an oxide film on said V-grooves of the guide-groove substrate at least in the vicinity of contact points between the guide pins and the V-grooves. The optical connector further includes a resin molding portion for surrounding the substrate and the upper plate, the resin molding portion including a pair of opposite opened portions at a front and back surfaces thereof.

Abstract: A gland seal comprises a plurality of sealing plates (24, 28, 30) sealingly received in a bore (12). Each pair of adjacent plates define between them a sealing channel (42). The channels are linked by elongate slots (41) in the plates to define a generally helical path. The channels are filled with a sealant through a filling hole (54) at one end of its respective channel.

Abstract: A method of connecting an optical fiber to a planar optical waveguide is provided in which an end face of a waveguide chip in which planar optical waveguides are formed is abutted against an end face of a fiber aligning jig on which optical fibers are arranged, to thereby connect the optical fiber to the corresponding planar optical waveguide. At least one marker is formed in each of the waveguide chip and the fiber aligning jig, and also at least one pin guide groove is formed in each of the waveguide chip and the fiber aligning jig, using the marker as a reference mark. The markers of the waveguide chip and the fiber aligning jig are aligned with each other along optical axes of the planar optical waveguides when the waveguide chip and the fiber aligning jig are abutted against each other. Further, fiber guide grooves are formed in the fiber aligning jig, using the marker as a reference mark.

Abstract: A fiber optic connector for a fiber distributed data interface (FDDI) has a keying element located along the centerline of the plug which may be rotated to provide different polarizations for the plug. The plug has a cable entering one end, and breaking out into two fibers which terminate in ferrules at the other end of the plug. The keying element has a post which is slidably received in a hole through the plug, the hole positioned in a groove located along the centerline of the plug; an annular flange is formed at the distal end of the post to retain it within the hole. The post is molded with a square keyway block which has two channels in its upper surface. The channels are orthogonal, and one is located along the centerline of the block while the other is located along one side of the block. The plug mates with a receptacle having a spline on its inner surface, located in one of four possible configurations near the centerline of the receptacle.

Abstract: A middle portion (13) of an optical fiber encapsulation (11) of an optical fiber ribbon is selectively removed, while leaving intact separated ribbon portions (14, 15) and optical fiber portions (12) extending between the separated ribbon portions. The exposed optical fiber portions are next contained between a pair of first optical fiber support members (18, 19) on opposite sides of the fiber portions. The support members are then preferably contained and encapsulated (FIGS. 7, 8) by injection molding plastic around them, which additionally reinforces the adjacent optical fiber ribbon portions. The optical fiber ribbon is cut for use by cutting transversely through the first support members and the optical fiber portions. This exposes optical fiber ends (27) which are polished for alignment and abutment to other optical fiber ends. The optical fiber support members also define an alignment aperture (20) that extends substantially parallel to the optical fiber portions.

Abstract: An optical backplane is made by making an aperture (15) at each of a plurality of output ports (13). The optical fiber (12) is adhered to the substrate such that all of the optical fiber segments of each output port traverse the aperture of that port. Next, the optical fiber segments traversing each aperture are contained between a pair of first (18, 19) optical fiber support members on opposite sides. The support members are next encapsulated in a plastic encapsulation (24), preferably by injection molding. The encapsulation, support members and substrate are cut transversely to the optical fiber segments, and the exposed ends (27) of the optical fiber segments are polished. This provides a connector for the output port to which a matching array of optical fibers (32) contained between opposite second support members can be abutted and aligned so as to transmit light from the output port the second optical fibers.

Abstract: On an optical connector plug main body 3 whose transverse section is a trapezoid, a groove 6 of rectangular transverse section is provided, at a bottom of which a plurality of alignment V grooves 7 are formed. In a plate member 9 of rectangular transverse section has a receiving groove 10 of also rectangular transverse section, the groove 10 being connected with the bottom of the plate member 9. An alignment sleeve 12 has an alignment groove 14 of wedge head shape. The plate member 9 is engaged with the groove 6 of the connector plug main body 3, and protrusions 11 of the plate member 9 is ultrasonic bonded into recesses 8 provided in the connector plug main body 3. A ribbon type optical fiber to which an adhesive is applied is inserted from the groove 6 to complete the connector plug. Thus assembled connector plugs are inserted in the state whose ends are faced with each other into the groove 14 of the alignment sleeve 12 to make the connection of the ribbon type optical fiber.

Abstract: An optical connector includes a cylindrical front body formed with a center bore having a front cylindrical bore, a rear cylindrical bore and a tapered bore therebetween. A fiber holding unit made of a flexible material is separable into two parts, whose mating surfaces are formed with grooves for holding an optical fiber and at front and rear portions with spacers for partially preventing contact between the mating surfaces in the proximity of the spacers. The two assembled parts form cylindrical outer surfaces at front and rear ends and a tapered outer surface between the cylindrical outer surfaces. The two assembled parts with the optical fiber interposed therebetween are able to be fitted in the front body from its rear end.

Abstract: This invention discloses an optical fiber connect/disconnect for power lasers. The connect/disconnect should allow a laser/fiber user to quickly interface fiber injection input and fiber output couplers while providing an audible and visual optical alignment. The connect/disconnect also offers fiber end protection against dust and mechanical damage.

Abstract: A fiber optic wafer probe, for use in measuring the parameters of photodetectors and other optoelectronic test devices at the wafer level, has a probe body along which an optical fiber extends to protrude from a tip of the probe body. The probe body loosely guides the optical fiber so that at least a significant portion of the length of the optical fiber is movable longitudinally with respect to the tip and probe body. This provides protection against excessive contact force between the fiber and the test device by enabling the optical fiber to buckle longitudinally in response to longitudinal overtravel of the fiber toward the test device. The probe body is of elongate shape with a probe tip at one end and a connector at the other end for detachably connecting the optical fiber to the probe body.

Abstract: An optical connector comprising, an alignment ferrule 11 receiving a plunger 38 and receiving an insert 35 between the plunger 38 and a constriction 32, the plunger 38 being constructed to receive an optical fiber 3 and a buffer 4 covering the optical fiber 3, the plunger 38 and the insert 35 being constructed for movement forwardly to compact the insert 35 in the constriction 32 and to apply compression concentrically on the optical fiber 3, and projecting barbs comprising a frictional surface 44 on the plunger 38 being force fit with corresponding ribs 47 along the alignment ferrule 11.