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Ofs Fitel Llc patents


Recent patent applications related to Ofs Fitel Llc. Ofs Fitel Llc is listed as an Agent/Assignee. Note: Ofs Fitel Llc may have other listings under different names/spellings. We're not affiliated with Ofs Fitel Llc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "O" | Ofs Fitel Llc-related inventors


Flat profile optical fiber cable for distributed sensing applications

A distributed sensing optical fiber cable is proposed. An optical fiber is positioned at the center of the cable and includes a core region, at least one cladding layer surrounding the core region, a protective coating covering the at least one cladding layer, and a tight buffer of elastomeric thermoplastic material disposed to surround the protective coating. ... Ofs Fitel Llc

Installation of optical fiber distribution cables in a multi-dwelling unit building

An optical fiber distribution cable for servicing living units inside a mdu building, is formed by surrounding differently colored optical fibers with a jacket having a diameter of not more than about 3.5 mm. The jacket is opaque for hiding the colored fibers at least partially from view, thus reducing or eliminating any negative visual impact of the cable when installed. ... Ofs Fitel Llc

Cladding mode stripper for use with optical systems and methods of forming the same

An all-glass cladding mode stripper comprises a plurality of high refractive index, small diameter glass beads disposed along an exposed portion of the inner cladding region of an optical fiber. The unwanted low na signal light (as well as any other type of stray light) propagating within the cladding layer is removed by refracting into the adjacent beads, where this captured light then scatters away from the optical fiber.. ... Ofs Fitel Llc

Broad bandwidth graded index multimode optical fiber for distributed temperature sensing in the 550nm region

. . Disclosed herein is a method for measuring temperature via distributed temperature sensing comprising transmitting light through a fiber optic cable; detecting backscattered light in the fiber optic cable, wherein the backscattered light comprises an anti-stokes band and a stokes band; calculating a ratio between an intensity of the anti-stokes band and an intensity of the stokes band; and using the calculated ratio to determine a temperature being sensed in the fiber optic cable; wherein the fiber optic cable comprises, from the center to the periphery; a central core having a refractive index that decreases progressively from a center of the central core to an edge of the core, wherein the refractive index follows an alpha profile; wherein a bandwidth-length product of the multimode optical fiber has a value greater than 2000 mhz-km at 1550 nm.. . ... Ofs Fitel Llc

Fiber optic storage module installation at user premises

An optical fiber storage module has a base, and a wall having an opening for paying out an optical fiber from inside the module. Spool retention fingers extend from the base. ... Ofs Fitel Llc

High count optical fiber cable configuration

A high count optical fiber cable is formed of a number of sub-unit components stranded around a central tension member. Each sub-unit component is formed to include the total number of individual fibers required to populate a given equipment rack (e.g., 288 fibers, for example). ... Ofs Fitel Llc

Parallel slit torch for making optical fiber preform

A torch for fabricating optical fiber preforms may include a body having a surface and two or more slit-shaped orifices oriented parallel or substantially parallel to each other along the surface. The torch body may further include two or more conduits connected to corresponding orifices. ... Ofs Fitel Llc

Gain fiber for high power lasers and amplifiers

An optical gain fiber for use in high power (e.g., greater than 500 w pump power) is proposed that is configured to exhibit a minimum bend radius such that the bend loss for the propagating lp01 mode is greater than about 0.03 db/m. It has been discovered that this bend radius criteria, which is less stringent, than that typically suggested in the art (e.g., bend loss less than about 0.03 db/m), meets the modal stability requirements at high power operation, since the increase in operating temperature of the fiber laser or amplifier has been found to somewhat relax the bend radius requirement (which was heretofore only measured at “room temperature”, not “operating temperature”). ... Ofs Fitel Llc

Wireless network cable assembly

An optical fiber-based cable is formed to include pre-manufactured wireless access nodes included at spaced-apart locations along a length of the optical fiber cable. Each wireless access node is formed to include an antenna, a wireless radio transceiver, and an optical transceiver. ... Ofs Fitel Llc

Polarization-maintaining fiber device supporting propagation in large mode field diameters

A higher-order mode (hom) fiber is configured as a polarization-maintaining fiber by including a pair of stress rods at a location within the cladding layer that provides for a sufficient degree of birefringence without unduly comprising the spatial mode profile of the propagating higher-order modes. Long-period gratings are used as mode couplers at the input and output of the pm-hom fiber, where the gratings are formed by exposing areas of the core region orthogonal to the position of the stress rods. ... Ofs Fitel Llc

Polarization maintaining optical fiber with non-symmetric stress applying parts

Embodiments are directed to an optical fiber cable assembly. The optical fiber cable assembly is a polarization maintaining optical fiber assembly. ... Ofs Fitel Llc

Extending a range of an optical fiber distributed sensing system

Embodiments are directed to a distributed temperature sensing system. The system includes a first fiber optic cable and a second fiber optic cable. ... Ofs Fitel Llc

Splicing optical fiber cable using a mass fusion splicer having a pitch different from cable pitch

A method for splicing a first optical fiber ribbon cable to a second optical fiber ribbon cable includes separating an end of the first optical fiber ribbon cable into loose optical fibers, and re-ribbonizing the loose optical fibers into a ribbonized end having a second pitch different from the first pitch of the original first optical fiber ribbon cable. The method further includes inserting the ribbonized end into a mass fusion splicer having the second pitch, and splicing the ribbonized end to the end of the second optical fiber ribbon cable using the mass fusion splicer.. ... Ofs Fitel Llc

Fiber bragg gratings in carbon-coated optical fibers and techniques for making same

A technique is described for fabricating one or more optical devices in a carbon-coated optical fiber. A photosensitive optical fiber is provided having a hermetic carbon coating. ... Ofs Fitel Llc

01/11/18 / #20180011236

Optical fiber assembly, methods of manufacture thereof and articles comprising the same

Disclosed herein is an optical fiber assembly comprising a launching fiber having a receiving end and a transmitting end; an illuminating fiber having a receiving end and a transmitting end; where the receiving end of the launching fiber is operative to receive light from a light source and the transmitting end of the launching fiber is operative to transmit light to the receiving end of the illuminating fiber; where the launching fiber contacts the illuminating fiber in a manner so as to be offset from a center of a cross-sectional area of the illuminating fiber; and where the launching fiber has a diameter that is ⅛ to ½ of a diameter of the illuminating fiber; and a lens that is operative to contact the transmitting end of the illuminating fiber.. . ... Ofs Fitel Llc

12/21/17 / #20170363810

Multimode beam combiner

An up-taper is applied by a mode adapter to increase a signal mode area prior to tapering and combining.. . ... Ofs Fitel Llc

12/14/17 / #20170357073

Tool system for routing an optical fiber or cable through walls at customer premises

A tool system for threading an optical fiber through a hole formed in a wall at customer premises, and for protecting the fiber inside the wall. A tool body has forwardly projecting fingers for capturing a connector at an end of the fiber from a direction approaching a front face of the connector. ... Ofs Fitel Llc

12/14/17 / #20170357072

Module for optical fiber installation and storage at customer premises

A module for installing and storing an optical fiber includes a supply spool containing fiber for routing between the module and a service module at a customer premises. An adapter inside the module connects the fiber on the spool with an outside connector associated with a device at the premises. ... Ofs Fitel Llc

12/14/17 / #20170357070

Module for optical fiber installation and storage at customer premises

A module for optical fiber installation and storage at customer premises has a base, and a fiber supply spool mounted for rotation on the base. An elongated adapter plate has a front end portion for mounting a connector adapter. ... Ofs Fitel Llc

11/30/17 / #20170343728

High backscattering waveguides

A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (db) above rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 db.. ... Ofs Fitel Llc

11/23/17 / #20170336566

Ribbon transition tool

A ribbon transition tool modifies a 200 μm ribbon for splicing to a 250 μm ribbon. A spreader comb is fixedly mounted at the front end of the base of the tool. ... Ofs Fitel Llc

10/26/17 / #20170307839

Surface treated optical fibers and cables for installation at customer premises

A method of treating a buffered optical fiber or jacketed cable having a relatively low surface energy, e.g., fibers or cables that meet low smoke zero halogen (lszh) standards, so they can be bonded to a supporting substrate at a customer premises by a water soluble, non-flammable adhesive. One or more burners produce a flame that treats the surface of the fiber or cable by oxidizing the surface as the fiber or cable moves past the burners. ... Ofs Fitel Llc

10/05/17 / #20170285291

Tight-buffered optical fiber having improved fiber access

A tight-buffered optical fiber cable includes an improved method of accessing the coated optical fiber. The cable can include an optical fiber having a glass core and a cladding layer. ... Ofs Fitel Llc

10/05/17 / #20170285272

Compact adapter module for installation at customer premises

A compact adapter module for installation at customer premises includes a base for mounting on a supporting surface, and a cover. The base is constructed for mounting a connector adapter operative to connect two communication lines to one another at a given location along a routing path at customer premises. ... Ofs Fitel Llc

09/28/17 / #20170276890

Composite cable

An optical fiber cable comprising a stack of optical fiber ribbons. The stack comprises corner fibers at the corners of the stack, edge fibers the edges of the stack, and internal fibers that are internal to the stack. ... Ofs Fitel Llc

08/31/17 / #20170248757

High-birefringence hollow-core fibers and techniques for making same

A hollow core fiber has a cladding comprising a matrix of cells, wherein each cell comprises a hole and a wall surrounding the hole. The fiber further has a hollow core region comprising a core gap in the matrix of cells, wherein the core gap spans a plurality of cells and has a boundary defined by the interface of the core gap. ... Ofs Fitel Llc

08/17/17 / #20170235068

Rollable ribbons in loose-tube cable structures

Embodiments of the invention include an optical fiber cable. The optical fiber cable includes a plurality of multi-fiber unit tubes. ... Ofs Fitel Llc

08/03/17 / #20170219792

Method for high speed processing of partially bonded ribbon structures

. . Embodiments of the invention include a method for making a partially bonded optical fiber ribbon. The method includes providing a linear array of optical fibers, and applying with an ink jet printing machine a bonding matrix material to at least a portion of at least two adjacent optical fibers. ... Ofs Fitel Llc

08/03/17 / #20170219791

Loose-tube optical fiber cables

An optical fiber cable comprising 200 micrometer (μm) optical fibers (fibers with an outer diameter of approximately 200 μm) that are located within buffer tubes. This permits fiber packing densities of 3.8 fibers/mm2 or higher. ... Ofs Fitel Llc

08/03/17 / #20170219790

Flexible ribbon structure and method for making

Embodiments of the invention include a method for making a partially bonded optical fiber ribbon. The method includes providing a linear array of optical fibers, and applying a bonding matrix material randomly to at least a portion of at least two adjacent optical fibers. ... Ofs Fitel Llc

07/20/17 / #20170204290

Uv-curable silsesquioxane-containing write-through optical fiber coatings for fabrication of optical fiber bragg gratings, and fibers made therefrom

Disclosed herein is a coating composition comprising a silsesquioxane component having one or more reactive functional groups that render it curable using ultraviolet radiation; where the one or more reactive functional groups are selected from the group consisting of an acrylate, a vinyl ether, or an epoxy; and optionally, a co-reactive non-silsesquioxane monomer and/or an oligomer having one or more reactive functional groups that are curable using ultraviolet radiation and are selected from the group consisting of free radically curable acrylates, cationically curable epoxies, and cationically curable vinyl ethers; where the coating composition is disposed and cured on an optical article; where the optical article is at least one of an optical fiber or an optical planar waveguide; and where the average functionality of the composition is greater than one.. . ... Ofs Fitel Llc

07/06/17 / #20170192167

High backscattering waveguides

A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (db) above rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 db.. ... Ofs Fitel Llc

06/15/17 / #20170168239

Preventing delamination of a coating on an optical fiber when stripping the fiber

A length of a coating on an optical fiber is cut and stripped from an end of the fiber by supporting the fiber in confronting relation to a cutting edge on one or more blades. Each blade is positioned so that its cutting edge cuts into the coating without delaminating the coating from an underlying fiber cladding by providing the cutting edge with sufficient sharpness. ... Ofs Fitel Llc

06/08/17 / #20170160508

Tool for installing an optical fiber in a building room or hallway

An installation tool and method of embedding an optical fiber in an adhesive bead deposited along a structural corner or crevice in a building room or hallway, without a ladder and while an installer stands safely on the floor. The tool includes a neck portion arranged to be joined to a distal end of a pole, a trough for receiving and containing the optical fiber, a guide channel disposed at a downstream end of the trough for retaining the fiber, and a tool nose disposed at a downstream end of the guide channel. ... Ofs Fitel Llc

06/01/17 / #20170153178

Distributed brillouin sensor

A distributed brillouin sensor system comprising a pump laser, a brillouin sensor fiber, and a detector system is described. The pump laser is arranged so as to send a pump signal into a first end of the brillouin sensor fiber, and the detector system is arranged to detect brillouin backscattering from the brillouin sensor fiber. ... Ofs Fitel Llc

05/18/17 / #20170139166

Optical cable containing fiber bundles and thread for tying the bundles

A thread for tying a group of fibers in a fiber optic cable having an outer jacket to one another to form a fiber bundle. The thread includes a length of a binder thread, and an adhesion material coated on the binder thread so that (a) the binder thread adheres to the group of optical fibers about which the thread is tied to form the fiber bundle, and the binder thread remains adhered to the bundled fibers to restrain movement of the fibers when the outer jacket and cable elements other than the bundled fibers are removed. ... Ofs Fitel Llc

05/04/17 / #20170126321

Wireless network cable assembly

An optical fiber-based cable is formed to include pre-manufactured wireless access nodes included at spaced-apart locations along a length of the optical fiber cable. Each wireless access node is formed to include an antenna, a wireless radio transceiver, and an optical transceiver. ... Ofs Fitel Llc

01/26/17 / #20170023754

Optical fiber cables

. . An optical fiber cable comprising a duct space and a fiber density in the duct space. The fiber density is greater than 2.3 fibers/mm2.. ... Ofs Fitel Llc

01/12/17 / #20170010411

Uv-transparent optical fiber coating for high temperature application, and fibers made therefrom

An optical fiber having at least two polymer coatings, the optical fiber comprising: an optical fiber comprising a glass optical core and a glass cladding; a first polymer coating comprising a silicone polymer covering the optical fiber; and a second polymer coating covering the first polymer coating is provided.. . ... Ofs Fitel Llc

01/05/17 / #20170003219

Optical sensor having fiduciary marks detected by backscattered light

An optical fiber having at least one fiduciary mark is provided. The at least one fiduciary mark is located at one or more axial positions along the optical fiber. ... Ofs Fitel Llc








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