Corning Cable Systems

Siecor Corporation

Corning Optical Communications LLC

Other

Siecor Operations, LLC

Gregory Alan Lochkovic

Gregory A Mills

Thomas Theuerkorn

Christopher K Eoll

Sherrh Clint Reinhardt

Francisco Luna Pina

Marisol Aponte Cervantes

Michael Travis Hundley

Brunhilde Hagemeister

Norman Andrew Punch, Jr

Karen Elizabeth Williams

Richard H Purdue

Bradley Jerome Blazer

James Arthur Register, Iii

Anne Germaine Bringuier

Edward John Fewkes

Michelle Dawn Fabian

Michael James Winningham

Allen Michael Miller

Huan-Hung Sheng

Reginald Roberts

Samuel D Nav&eacute;

Harriet G Cooke

Leigh Rooker Josey

Larry W Self

John R Keesee

Michael D Genovese

James D Blackburn

Jeffrey L Dellinger

Mary C Corpening

Sheila A Cooper

Frederic Zapf

Siegfried Unterberger

George Neill Abernathy

Fiber optic cable demarcations inhibiting movements of optical fibers relative to strength members, and related cable assemblies and methods, are disclosed. By bonding optical fibers to strength members with a bonding agent received into at least one cavity, a demarcation may be formed inside the cable jacket at a cable jacket interface. The at least one cavity may be disposed within a cable jacket of a fiber optic cable and at the cable jacket interface. The demarcation may bond at least one optical fiber and at least one strength member together to inhibit longitudinal movement of the at least one optical fiber relative to the at least one strength member. In this manner, the demarcation may inhibit optical fiber movement within the fiber optic connector, which may cause tensile forces and/or buckling of the optical fiber resulting in optical fiber damage and/or optical attenuation.

Fiber optic cable demarcations inhibiting movement of optical fibers relative to strength members, and related assemblies and methods

A strain-relief member having a body formed from a block copolymer and designed for use in a fiber optic drop cable assembly. The body has a central channel and a cylindrical connector-end portion sized to surround an end-portion of a connector. The body also has a tapered cable-end portion sized to surround an end portion of a fiber optic cable that connects to the connector and that has a preferential bend axis. The strain-relief member is configured to limit an amount of strain in the strength components to less than 0.041 when subjected to flex and proof testing. A fiber optic drop cable assembly that has a fiber optic cable with a preferential bend axis and that employs the strain-relief member is also disclosed.

Strain-relief member and fiber optic drop cable assembly using same

A fiber optic cable includes a messenger section having at least one strength member, a carrier section having at least one optical fiber therein, and a common jacket that forms a common jacket. In one embodiment, the carrier jacket has a preferential tear portion adjacent to the at least one optical fiber with a substantially continuous outer surface in the carrier jacket adjacent to the preferential tear portion. The preferential tear portion may be defined by at least one of: at least one internal void, at least one weld line, and at least one wing extending from a tape disposed about the one or more optical fibers. Various alternatives are possible. For example, the carrier jacket may also or alternatively include at least one gripping area extending for enhancing the gripping of the carrier section when pulling apart the carrier section and messenger section.

Fiber optic cables that are separable for optical fiber access

Fiber optic articles, assemblies, and cables preserve optical performance by using optical waveguides having a core, a cladding, and a coating system according to the present invention. Moreover, the optical articles, assemblies, and cables of the present invention may achieve performance levels that were previously unattainable, for instance, the present invention contemplates acceptable optical performance for wavelengths such as 1625 nm and higher. Additionally, articles, assemblies, and/or cables of the present invention advantageously preserve optical performance, i.e., have relatively low delta attenuation, when subjected to manufacturing processes and/or environmental conditions such as temperature cycling. In other words, the articles, assemblies, and cables can withstand increased stress/strain before having significant attenuation.

Fiber optic articles, assemblies, and cables having optical waveguides

A tight buffered optical fiber having a protective layer generally surrounding the optical fiber, a release layer at least partially bonding to and generally surrounding the protective layer and a buffer layer generally surrounding and being strippable from the release layer. The release layer including an acrylate with oligomers, monomers and a reactive release substance distributed with a matrix. The reactive release substance may include a silicone selected from the group including methyl and phenyl silicones. The matrix may be mechanically or chemically bonded to the protective layer so that stripping the buffer layer does not remove the release layer.

Tight buffered optical cables with release layers

An optical fiber array ( ) comprising at least one subunit ( ) including at least one optical fiber ( ) therein surrounded by a respective subunit matrix ( ). The optical fiber array ( ) includes a common matrix ( ) disposed adjacent to the at least one subunit ( ). The optical fiber array ( ) can include an interfacial zone ( ) between the subunit and common matrices defined by an adhesion treatment, the adhesion treatment comprising at least one interfacial substance having an interface characteristic in a range from an essentially non-coupled relationship to a loose bond.

Optical fiber arrays having an interface characteristic

A fiber optic cable component, for example, an optical ribbon ( ), individual optical fiber, fiber bundle, or a non-optical fiber component, having a radiation markable section, the radiation markable section including a radiation reactive ingredient compounded with a base matrix material, and methods for creating markings in the radiation markable section. When irradiated with a suitable radiation source, a photochemical reaction occurs that creates markings in the radiation markable section, so that the ribbon classification task may be done with ease and reliability. The marking of fiber optic cable components according to the present invention may, for example, be accomplished by a radiation source of the laser type.

Radiation marking of fiber optic cable components

An optical transmission element (BL BL ) shows at least two optical fiber sub-units (BL BL ) which are combined by means of a common plastic covering (BSA). To the plastic covering (BS BS ) of the respective optical fiber sub-unit (BL BL ) at least one binding agent (HM HM ) is applied which causes the adhesion of the plastic matrix of the common second covering (BSA) of the optical transmission element (BL ) to the respective plastic matrix of the coverings (BS BS ) of the at least two optical fiber sub-units (BL BL ).

Optical transmission element, process as well as device for its manufacture

An optical fiber array ( ) comprising at least one subunit ( ) including at least one optical fiber ( ) therein surrounded by a respective subunit matrix ( ) having a subunit matrix modulus characteristic. The optical fiber array ( ) includes a common matrix ( ) disposed adjacent to the at least one subunit ( ) and having a common matrix modulus characteristic. A subunit/common matrix modulus ratio being defined as a ratio of the subunit matrix modulus characteristic with respect to the common matrix modulus characteristic, the subunit/common matrix modulus ratio being greater than about 1.5:1. The optical fiber array ( ) can include an adhesion zone ( ) defining a controlled adhesion bond between the common and subunit matrices ( ).

Optical fiber arrays

A fiber optic cable component, for example, an optical ribbon ( ), individual optical fiber, fiber bundle, or a non-optical fiber component, having a radiation markable section, the radiation markable section including a radiation reactive ingredient compounded with a base matrix material, and methods for creating markings in the radiation markable section. When irradiated with a suitable radiation source, a photochemical reaction occurs that creates markings in the radiation markable section, so that the ribbon classification task may be done with ease and reliability, so that substantial physical damage to the layer by the radiation source is avoided. The marking of fiber optic cable components according to the present invention may, for example, be accomplished by a radiation source of the laser type.

An optical fiber array (,) comprising at least one subunit (,) including at least one optical fiber (,) therein surrounded by a respective subunit matrix (,) having a subunit matrix modulus characteristic. The optical fiber array (,) includes a common matrix (,) disposed adjacent to the at least one subunit (,) and having a common matrix modulus characteristic. A subunit/common matrix modulus ratio being defined as a ratio of the subunit matrix modulus characteristic with respect to the common matrix modulus characteristic, the subunit/common matrix modulus ratio being greater than about 1.5:1. The optical fiber array (,) can include an adhesion zone (,) defining a controlled adhesion bond between the common and subunit matrices (,).

A ribbon separation tool (10) for separating optical fiber ribbons (C1,C2,C3) into subsets of optical fibers. Ribbon separation tool (10) includes a stationary shearing device (27), and a moveable shearing device (17), the moveable shearing device (17) is operative to move relative to the stationary shearing device (27) during a shearing stroke. Optical fiber ribbon support members (42), with optical fiber ribbon receiving slots (46) being defined therebetween, are adjacent shearing devices (17,27). Moveable shearing device (17) is moveably located between optical fiber ribbon support members (42) and includes moveable sub-slots (90a,90b,90c). When a cover member (26) of tool (10) is in a closed position, stationary sub-slots (92a,92b,92c) of stationary shearing device (27) are aligned with moveable sub-slots (90a,90b,90c) to define shearing slots (90a,92a;90b,92b;90c,92c). Shearing slots (90a,92a;90b,92b;90c,92c) are each sized to receive a respective optical fiber ribbon (C1,C2,C3), and each shearing slot straddles a shearing plane (M) defined between shearing devices (17,27). When tool (10) is actuated by pushing a pusher member (52) to an actuated position, ribbon (C1) will be separated into two 6-fiber subsets, ribbon (C2) will be separated into one 4-fiber and one 8-fiber subset, and ribbon (C3) will be separated into one 2-fiber subset and one 10-fiber subset. With pusher member (52) in the actuated position, optical fiber ribbons (C1,C2,C3) are then moved lengthwise whereby ribbons (C1,C2,C3) are separated lengthwise.

Ribbon separation tool and method for separating an optical fiber ribbon

A method for accessing individual coated optical fibers in an optical fiber ribbon includes securing an adhesive tape to a substrate surface. The adhesive tape has a backing which faces away from the substrate surface to which it is secured. A glue is placed on the tape backing. The optical fiber ribbon is placed over the glue. After the glue is set, the optical fiber ribbon is pulled to burst the optical fiber ribbon common coating and delaminate one surface of the optical common coating. The process may be repeated to delaminate the other surface of the common coating.

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Conover, NC, United States of America

Gregory Alan Lochkovic