Patent classifications
G02B6/4429
Ferrule-less multi-fiber connectors
A connection system includes an optical connector assembly; and an optical plug. The connector assembly includes a stack of gel-groove assemblies and a spring assembly mounted within a housing. Each of the gel-groove assemblies includes a first gel block at a first axial end, a second gel block at a second axial end, and a fiber mating region between the first and second gel blocks. The optical plug including sub-modules over-molded over arrays (e.g., ribbons) of the optical fibers. Each sub-module defines notches for receiving latches of the spring assembly when the optical plug is coupled to the first axial end of the optical adapter. Bare optical fibers extend from the plug, pass through the first axial gel block, and enter the fiber mating region when the plug is coupled to the adapter.
Disintegrating binders for multi-member cable
A multi-member cable includes at least a first cable element and a second cable element. The first and second cable elements may extend in parallel, be stranded in a helical winding pattern, or be stranded in a reverse-oscillatory winding pattern, along the length of the cable. At least one binder is helically wrapped about the first and second cable elements to hold them together. The binder is formed of a material which disintegrates when exposed to a particular liquid or heat. In a preferred embodiment, the binder may be formed of polyvinyl-alcohol (PVA).
Filling composition for optical fiber cables
A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C) from 1 wt % to less than 5 wt % polystyrene having a weight average molecular weight (M.sub.w) from 1,000 to 100,000. The composition is used as a filling composition in a buffer tube.
OPTICAL FIBER CABLE WITH LASER WELDED JACKET AND METHOD OF MANUFACTURING
An optical cable and method for forming an optical cable is provided. The cable includes a cable jacket including an inner surface defining a channel and an outer surface. The cable includes a seam within the cable jacket that couples together opposing longitudinal edges of a wrapped thermoplastic sheet which forms the cable jacket and maintains the cable jacket in the wrapped configuration around the plurality of optical fibers. The method includes forming an outer cable jacket by wrapping a sheet of thermoplastic material around a plurality of optical core elements. The method includes laser welding together portions of thermoplastic material of opposing longitudinal edges of the wrapped sheet such that a seam is formed holding the sheet of thermoplastic material in the wrapped configuration around the core elements.
CABLE ASSEMBLY WITH BUNDLING ARRANGEMENT
The present disclosure relates to a cable assembly including a sleeve and a plurality of cables that extend through the sleeve. The cable assembly also includes a grommet positioned within the sleeve at a location offset from one end of the sleeve. The grommet forms a dam location. The cable assembly further includes a bonding material at least partially filling a region of the sleeve located between the dam location and the end of the sleeve. The bonding material bonds the fiber optic cables and the grommet relative to the sleeve. The cables extend through the grommet and the bonding material and include break-out portions that extend outwardly beyond the end of the sleeve.
OPTICAL COMMUNICATION CABLE
An optical communication cable is provided having a cable body with an inner surface defining a passage within the cable body and a plurality of core elements within the passage. A film surrounds the plurality of core elements, wherein the film directs a radial force inward onto the plurality of core elements to restrain and hold the plurality of core elements in place.
FILLING COMPOSITION FOR OPTICAL FIBER CABLES
A filling composition comprises (A) a mineral oil having a kinematic viscosity from 80 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C1) a propylene/ethylene copolymer having a weight average molecular weight (M.sub.w) from 5,000 to 200,000 or (C2) an ethylene/propylene copolymer having a weight average molecular weight (M.sub.w) from 5,000 to 200,000. The filling composition is used as a filling composition in a buffer tube.
FILLING COMPOSITION FOR OPTICAL FIBER CABLES
A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C) from 1 wt % to less than 5 wt % polystyrene having a weight average molecular weight (M.sub.w) from 1,000 to 100,000. The composition is used as a filling composition in a buffer tube.
ROLLABLE OPTICAL FIBER RIBBON WITH LOW ATTENUATION, LARGE MODE FIELD DIAMETER OPTICAL FIBER AND CABLE
A rollable optical fiber ribbon utilizing low attenuation, bend insensitive fibers and cables incorporating such rollable ribbons are provided. The optical fibers are supported by a ribbon body, and the ribbon body is formed from a flexible material such that the optical fibers are reversibly movable from an unrolled position to a rolled position. The optical fibers have a large mode filed diameter, such as≥9 microns at 1310 nm facilitating low attenuation splicing/connectorization. The optical fibers are also highly bend insensitive, such as having a macrobend loss of≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm.
System for locking optical fibers within a fiber optic cable
The present disclosure includes a fiber optic cable having a conduit including a conduit wall defining a conduit passage that extends longitudinally through the conduit. The conduit also includes an adhesive injection port defined through the conduit wall and at least one optical fiber within the conduit passage. The cable further includes a fiber lock including an adhesive volume in communication with the adhesive injection port. The adhesive volume includes a main adhesive volume positioned within the conduit passage and bonded to the optical fiber. The main adhesive volume is fixed to prevent longitudinal movement relative to the conduit.