Corning Cable Systems

Corning Research & Development Corporation

Corning Optical Communications LLC

Chanh C Vo

John Joseph Napiorkowski

Brad N Grunwald

Boyd Grant Brower

Guy Castonguay

Rodger Alan Tenholder

Brett A Menke

Jason B Reagan

Terry Dean Cox

Harley Joseph Staber

Jennifer A Battey

Donnie R Clapp, Jr

Carl Randall Harrison

James Phillip Luther

Terry Lee Cooke

Qi Wu

Michael De Jong

Hieu Vinh Tran

Tory Allen Klavuhn

John Austin Keenum

Howard Clark Schwartz

Stephen Guy Bloodworth

Elizabeth Tran

Randy LaRue McClure

JiWei Sun

Guy Joachin Castonguay

Paul X Devereaux

Gregory Earl McMinn

Steven E Glenn

Kristen C Stohr

Anil Bastola

Anthony R Board

Barry G Slotnick

Alicia D Hothem

Wei Liu

Chad Charles Terwilliger

Sean Matthew Arnold

James O Little

The present disclosure relates to a polymeric overcoating used as a splice protector, and a corresponding method of application where the resulting coated fusion spliced optical fibers or coated fusion spliced optical fiber ribbons can be bundled or stacked to reduce the size of splice protection.

Coating fusion spliced optical fibers and subsequent processing methods thereof

Apparatus and methods for stripping tight-buffered optical fibers are disclosed. The methods include removing a portion of the buffer layer and thin-coating layer to expose the bare fiber at the optical fiber end, wherein the cuts to the optical fiber needed to strip the optical fiber are made simultaneously. In some methods, a portion of the cover is used to clean the bare fiber as the cover portion is removed. In other methods, the normal force that secures the cover is alleviated so that the cover portion can be removed without breaking the bare fiber. Different apparatus configured to effectuate the stripping methods are disclosed.

Stripping apparatus and methods for tight-buffered optical fibers

Disclosed are fiber optic connectors including a holder for attaching a fiber optic cable to a fiber optic connector along with cable assemblies and methods for making the same. In one embodiment, the holder includes a first and a second cantilevered arm that are squeezed together when a sleeve is placed over the holder. Further, one or more of the cantilevered arm may include a plurality of teeth for 'biting' into the cable jacket and providing a suitable fiber optic cable retention force. The fiber optic connectors, cable assemblies and methods disclosed herein are advantageous since they allow the craft to quickly, reliably, and easily attach a robust fiber optic cable to a connector, thereby providing a rugged solution for the craft.

Fiber optic connectors, cable assemblies and methods for making the same

A line module includes a plurality of pivoting insulation displacement connector holders, an insulation connector (IDC) positionable in at least one holder when the holder is in a connected position, and a gel-less jack in electrical communication with at least one IDC.

Network interface device, apparatus, and methods

A hybrid surge protector for a network interface device (NID) is disclosed. The hybrid surge protector includes a fail-safe spring connected to the ground electrode of a three-electrode gas tube. Tabs on the fail-safe spring are held away from the gas-tube end electrodes by a fusible element. The hybrid surge protector also includes metal-oxide varistor elements ('MOVs') in contact with the gas-tube end electrodes and with the ground electrode via an MOV spring. This arrangement provides for two initial paths to ground-one path from the gas-tube end electrodes to the ground electrode through the gas tube, and another from the gas-tube end electrodes to the ground electrode through the MOVs and the MOV spring. The dominant path to ground starts as the MOV ground path but switches to the gas-tube path as the gas tube becomes activated. Another path to ground via the fail-safe spring is also available should the gas tube overheat. A surge protection module that includes the hybrid surge protector is also disclosed.

Hybrid surge protector for a network interface device

An optical connection closure has at least one connector port located within an external wall of the closure for receiving a connectorized optical fiber of a distribution cable on the inside of the closure and a pre-connectorized fiber optic drop cable on the outside of the closure. The closure includes a base, a cover affixed to the base and movable between a closed position and an opened position, and an end wall that defines at least a portion of at least one cable opening for receiving the distribution cable in a butt-type or a through-type closure configuration. The base and the cover define an interior cavity that optionally contains a splice tray for interconnecting the optical fiber of the distribution cable with a pigtail to create the connectorized optical fiber. The connector port may be located within an end wall, a bottom wall or a top wall of the closure.

Optical connection closure having at least one connector port for optically connecting a drop cable to a distribution cable

Furcation bodies and furcation assemblies are disclosed. In one embodiment, a furcation body includes a channel forming a passageway extending from the front end to a back end of the furcation body. The furcation body may accommodate different styles and/or sizes of fiber optic cables. For instance, the furcation body may be secured to either a buffer tube of a buffered drop cable or a cable jacket of an unbuffered drop cable. Additionally, assemblies may include a furcation tube secured to the furcation member back end for protecting the optical fiber extending from the furcation body and/or a fiber optic connector. Furcation assemblies having multiple fibers are also disclosed.

Furcation bodies and fiber optic assemblies using the same

A NID includes a base defining an interior cavity and a protective outer cover attached to the base for movement between an opened position and a closed position. At least one of the base and the outer cover has one or more channels formed therein and the other of the base and the outer cover has one or more lips that depend outwardly therefrom. Each lip is received within a corresponding channel formed on the other of the base and the outer cover. The lip and the channel have side portions that engage at multiple contact points to form an environmental seal that prevents contaminants, such as wind-driven dust, sand and moisture, from entering the interior cavity when the outer cover is in the closed position, thereby protecting communications equipment within the NID without the use of an elastomeric gel, seal or gasket.

Environmental seal for network interface device

A slack storage receptacle for storing an excess length of a pre-connectorized fiber optic drop cable extending between an optical connection terminal and a network interface device (NID) includes a housing and a storage means disposed within the housing for receiving the drop cable such that the drop cable slack is stored external to the NID. The slack storage receptacle may be secured to an exterior wall of a subscriber premises and the NID mounted thereon. Alternatively, the slack storage receptacle may be positioned around and formed to the NID. Alternatively, the slack storage receptacle may be buried in the ground adjacent the NID. The drop cable slack may be wound onto the storage means after deployment. Alternatively, the slack storage receptacle may be pre-assembled, shipped to the subscriber premises, and the drop cable unwound from the storage means with the drop cable slack remaining wound on the storage means.

Fiber optic drop cable slack storage receptacle

An installation closure having fiber management apparatus includes an outer shell and at least one cable centralizer disposed within the outer shell at a factory-assembled access location on a fiber optic distribution cable. The cable centralizer has a central channel for retaining the distribution cable and at least one routing slot for routing an optical fiber preterminated from the distribution cable at the access location. At least a portion of the outer shell is removed following deployment of the distribution cable and replaced with a conventional closure. An optical connector may be mounted upon the end of the preterminated optical fiber and the installation closure may further include an end centralizer having a central channel for retaining the distribution cable and at least one connector slot for retaining the connector. The replacement closure includes at least one connector port for receiving the connector from the inside of the installation closure.

Installation closure having fiber management apparatus

A wire termination device, such as a protected termination device ('PTD'), is provided for establishing and testing telephone wiring connections. Conductive contacts provided on the cover of the PTD are incorporated into a plug assembly mounted on the cover. The plug assembly is then brought into engagement with the jack of the PTD when the cover is closed. A preferred embodiment of the plug assembly incorporates laterally disposed bypass contacts that are brought into engagement with conductive plates within the jack. An alternative embodiment of the plug assembly has conductive contacts that are brought into contact with the tip and ring contacts of the jack when the cover is closed. In either case, test contacts are accessible through the cover of the PTD so that the cover of the PTD can be opened and closed without having to disconnect and reconnect the test probes from the test contact points.

Wire termination device having test contacts on cover

A fiber optic cable has a plug assembly that may be positioned and secured at any desired location along the length of the cable to engage a receptacle disposed within a connector port provided in a wall of a connection terminal. The plug assembly includes a shroud, a coupling nut, a heat shrink tube for sealing the cable and a boot for providing bending strain relief. At least a portion of the cable passes through the connector port for interconnection with optical fibers of a distribution cable or optical equipment. A method for routing a fiber optic cable into a connection terminal includes using a connector port provided in a wall of the terminal, determining a desired length of the cable, positioning and securing a plug assembly at a desired location along the length of the cable, and mating the plug assembly with a receptacle disposed within the connector port.

Fiber optic cable and plug assembly

Optical connection closure having at least one connector port

An xDSL splitter module is provided for mounting in a network interface device (NID) that contains an xDSL splitter circuit and the terminals to connect the circuit between outside plant wires and two pairs of inside wires to deliver POTS and xDSL to the subscriber. The module also has at least a demarcation point for the POTS signal.

XDSL splitter line module for network interface device

Metal oxide varistors (MOVs) are employed in surge protection devices, such as overvoltage protection devices, between a pair of signal lines and ground to reduce the capacitive imbalance introduced by the overvoltage protector, thereby improving higher frequency transmissions over twisted-pair telephone lines. The MOVs are sorted into subgroups having a capacitive tolerance of no more than about 1.0 picofarad. MOVs with asymmetrical electrodes can also be sorted to reduce both the capacitance and the capacitive tolerance of the MOVs. The sorted MOVs can then be electrically connected in parallel with a gas discharge tube on each signal line to produce an overvoltage protection device, for example a station protector for use at a customer premises, having a capacitive imbalance that does not exceed about 1.3 picofarads. The use of asymmetrical electrodes reduces the capacitance of the sorted MOVs to less than about 30 picofarads.

Method and apparatus for balancing capacitance in hybrid overvoltage protection device

Growing community of inventors

Arlington, TX, United States of America

Chanh C Vo