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Ofs Fitel Llc patents (2016 archive)


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


Design and manufacture of multi-mode optical fibers

Described is a technique for the design and manufacture of mmfs. Designs are implemented so as to limit the maximum variation in z(r, λ) with respect to wavelength, where z(r, λ) is the dielectric constant weighted by the square of the wavelength. ... Ofs Fitel Llc

Low refractive index coating for optical fibers, methods of manufacture thereof and articles comprising the same

Disclosed herein is a composition comprising 65 to 95 weight percent of a fluorinated monofunctional monomer; 5 to 35 weight percent of a fluorinated multifunctional monomer; and 0.5 to 3 weight percent of a silane coupling agent; where all weight percents are based on the total weight of the composition; where the fluorinated monofunctional monomer and the fluorinated multifunctional monomer are devoid of any trifunctional fluorocarbon moieties when they have 6 or more fluorocarbon repeat units; where the fluorocarbon repeat units are cf2 or cf moieties; and where a crosslinked composition has a shore d hardness of 56 to 85 and has a refractive index (ri) that meets the limitation of the equation ri≦1.368+10.8/x, where x denotes wavelength in nanometers.. . ... 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

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

Compression-resistant seismic fiber optic cable for repeated deployment

Embodiments of the invention include a compression-resistant seismic optical fiber cable for repeated deployment. The seismic optical fiber cable includes a central core tube dimensioned to receive at least one bundle of optical fibers. ... Ofs Fitel Llc

9 lp-mode fiber designs for mode-division multiplexing

A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 lp modes for transmission of a spatially-multiplexed optical signal and has optimized maximum differential group delay (mdgd) through a wide range of wavelengths.. ... Ofs Fitel Llc

Multi-fiber optical distribution cable for hallway installations

An optical fiber distribution or breakout cable for serving multiple customer premises in a multi-dwelling unit (mdu) building. The cable contains a number of bend insensitive fibers each having a different colored coating for identification. ... Ofs Fitel Llc

Systems and techniques for termination of ports in fiber lasers

A technique is described for eliminating feedback light in a high-power optical device. An optical device is provided that generates, along an optical pathway, an output light at a desired signal wavelength, wherein the generation of the output light at the signal wavelength results in the generation of a feedback light at an undesired feedback wavelength. ... Ofs Fitel Llc

Suppression of stimulated brillouin scattering in higher-order-mode optical fiber amplifiers

An hom-based optical fiber amplifier is selectively doped within its core region to minimize the presence of dopants in those portions of the core where the unwanted lower-order modes (particularly, the fundamental mode) of the signal reside. The reduction (elimination) of the gain medium from these portions of the core minimizes (perhaps to the point of elimination) limits the amount of amplification impressed upon the backward-propagating stokes wave. ... Ofs Fitel Llc

Optical-fiber ribbon with reduced-diameter optical fibers

An optical-fiber ribbon with reduced-diameter optical fibers is disclosed in which the optical-fiber ribbon comprises a plurality of reduced-diameter optical fibers that meet the itu-t g.657.a1 standard or the itu-t g.652.d standard, and a ribbon matrix surrounding the reduced-diameter optical fibers, wherein a local matrix thickness of the optical-fiber ribbon is more than about 35 microns.. . ... Ofs Fitel Llc

Apparatus for alignment of a multicore fiber in a multifiber connector and method of using same

A multicore fiber alignment apparatus is described, having a chassis into which is mounted ferrule-holding means for holding a multicore fiber ferrule having one or more capillaries extending therethrough. Fiber-holding means for holding one or more multicore fibers in position to be mounted into the ferrule, such that each multicore fiber extends through a respective ferrule capillary. ... Ofs Fitel Llc

Distributed brillouin sensor

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

Using silicon tetraflouride during powder-in-tube (pit) process

The embodiments disclosed herein seek to ameliorate the high costs associated with the use of ultra-pure silica by using a lower-cost starting material and purifying the lower-cost starting material to an acceptable level of purity during the preform manufacturing process. In one embodiment, instead of using fully densified silica crystals, the disclosed process uses porous silica grains that have a substantially monodisperse size distribution as the starting materials for a powder-in-tube preform manufacturing process and utilize silicon tetrafloride doping to promote silica dehydration.. ... Ofs Fitel Llc

Eliminating the need for a thin-walled tube in a powder-in-tube (pit) process

The need for thin-walled tubes or binders is eliminated in powder-in-tube preform manufacturing processes. This is done by using high-surface-area silica particles that consolidate at temperatures that are lower than a high-temperature mold.. ... Ofs Fitel Llc

09/08/16 / #20160257600

Manufacturing irregular-shaped preforms

Irregular-shaped optical fiber preforms and processes for manufacturing such preforms are disclosed. In some embodiments, the irregular-shaped preforms are manufactured by using thin-walled tubes that have irregularities. ... Ofs Fitel Llc

09/08/16 / #20160257599

Easy removal of a thin-walled tube in a powder-in-tube (pit) process

The embodiments disclosed herein seek to ameliorate high costs associated with the use of ultra-pure silica by using a lower-cost starting material and purifying the lower-cost starting material to an acceptable level of purity during the preform manufacturing process. In one embodiment, a nucleating compound is coated on a thin-walled silica tube, which upon cooling, forms cristobalite allowing for easy removal of the thin-walled silica tube.. ... Ofs Fitel Llc

09/08/16 / #20160257572

Using porous grains in powder-in-tube (pit) process

The embodiments disclosed herein seek to ameliorate the high costs associated with the use of ultra-pure silica by using a lower-cost starting material and purifying the lower-cost starting material to an acceptable level of purity during the preform manufacturing process. In one embodiment, instead of using fully densified silica particulate, the disclosed process uses mesoporous silica grains that have a substantially monodisperse size distribution as the starting materials for a powder-in-tube preform manufacturing process.. ... Ofs Fitel Llc

09/01/16 / #20160252684

Systems and techniques for improving insertion loss performance of multicore fiber connectors

Structures and techniques are described for aligning multicore optical fibers in a multicore optical fiber cable having a plurality of optical fiber cores, at least one end portion and a protective coating. The protective coating is removed from the end portion of the multicore fiber cable to create an exposed end portion of the multicore fiber. ... Ofs Fitel Llc

09/01/16 / #20160252673

Polarization maintaining single-mode low-loss hollow-core fiber

A hollow core fiber exhibiting selective birefringence is provided. The selective birefringence is induced by harnessing properties of surface modes that cause transmission loss and are otherwise considered as detrimental. ... Ofs Fitel Llc

07/28/16 / #20160216136

Distributed environmental fiber optic sensor and system

A fiber optic sensor for use in environments containing darkening agents, e.g., hydrogen. The sensor includes a multicore fiber or a fiber optic cable containing a number of optical signal paths. ... Ofs Fitel Llc

07/21/16 / #20160211640

Fat-fiber adapter for pump use

As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.. ... Ofs Fitel Llc

07/21/16 / #20160211639

Pump and signal combiner for high numerical aperture use

As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.. ... Ofs Fitel Llc

07/21/16 / #20160209592

Optical combiner

A waveguide comprises an un-tapered end and a tapered end. The waveguide progressively varies a numerical aperture (na) of light as the light propagates from the tapered end to the un-tapered end.. ... Ofs Fitel Llc

06/16/16 / #20160170137

Low loss optical fiber and method of making the same

The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. ... Ofs Fitel Llc

06/16/16 / #20160169711

Fiber optic sensor cable and fiber optic sensing system

The present disclosure relates to a fiber optic sensor cable comprising one or more optical fibers, each optical fiber comprising at least one core for guiding light, at least one cladding layer and one or more coating layers, at least one (thermoplastic) buffer layer surrounding each optical fiber, two or more longitudinally extending strength members located on opposite sides of the buffer layer(s), and a plastic jacket enveloping the buffer layer(s) and the strength members. A further embodiment relates to a remote sensing system incorporating one or more of said fiber optic sensor cables.. ... Ofs Fitel Llc

05/19/16 / #20160139337

Dual-ended optical fiber pathway

In an optical fiber turnaround, first and second optical fiber cores are configured to transmit light bidirectionally along a transmission axis between proximal and distal ends of the first and second optical fiber cores. A reflector component is positioned at the distal ends of the first and second optical fiber cores. ... Ofs Fitel Llc

05/19/16 / #20160139336

High efficiency pump signal combiner for high power fiber amplifier and laser applications

A high efficiency optical combiner minimizes core region distortions in the area where fusion splicing between an input tapered fiber bundle (or any other type of “cladding-less” input fiber) and output fiber are joined. The thickness of the output fiber's glass cladding layer in the splice region is reduced (if not removed altogether) so that a core-to-core splice is formed and any necked-down region where the glass flows to join the core regions (while also joining the outer diameters) is essentially eliminated. ... Ofs Fitel Llc

05/05/16 / #20160126692

Polarization-maintaining (pm) double-clad (dc) optical fiber

A double-clad (dc) polarization-maintaining (pm) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (ncore). ... Ofs Fitel Llc

05/05/16 / #20160124175

Apparatus for fiber-to-the-premises and network system thereof

Splitter housings suitable for a rapid deployment of an fttx network system are disclosed. For some embodiments, a splitter housing splits one of many input optical fibers to a plurality of output optical fibers and keeps the rest of input optical fibers for future network expansion. ... Ofs Fitel Llc

04/07/16 / #20160097911

Installation of optical fiber bundles in a multi-dwelling unit for providing network access to multiple user premises

A method of installing a bundle of optical fibers associated with a fiber network through hallways or corridors in a multi-dwelling unit (mdu) to service a number of premises in the mdu. The bundle is adhered along a wall or other supporting surface in a hall or corridor leading to the premises, by dispensing or activating an adhesive material or component over one or both of the bundle and a desired installation path along the supporting surface, and applying the bundle to the supporting surface over the installation path. ... Ofs Fitel Llc

02/04/16 / #20160033733

Compact storage and distribution module for optical fiber and cable

A storage and distribution module for optical fiber and cable includes a base having a bottom wall, and the bottom wall has a raised boss. A number of spool mounting fingers are arranged and configured on top of the boss to retain a fiber supply spool containing slack windings of an optical fiber. ... Ofs Fitel Llc

02/04/16 / #20160033720

Polarization-maintaining (pm) double-clad (dc) optical fiber

A double-clad (dc) polarization-maintaining (pm) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (ncore). ... Ofs Fitel Llc

02/04/16 / #20160033100

Light-emitting diode input for hybrid solar lighting systems

A hybrid lighting system is disclosed in which light emitting diodes (leds) provide input light when illumination with solar light is unavailable. Light from leds are propagated through an optical fiber, which delivers the light to a point of illumination. ... Ofs Fitel Llc

01/28/16 / #20160023939

Isothermal plasma cvd system for reduced taper in optical fiber preforms

A chemical vapor deposition (cvd) system is configured to reduce the presence of geometrical and optical taper at the end sections of the preform, or more generally controlling the axial profile of the fabricated optical fiber preform. The system is configured to create an isothermal plasma within the substrate tube, with a relatively confined deposition zone located upstream of the plasma. ... Ofs Fitel Llc

01/21/16 / #20160018616

Drop cable assembly

Drop cable assemblies suitable for an optical fiber distribution system are disclosed. For some embodiments, the drop cable assembly splits an input optical fiber to a plurality of optical fibers and provides optical connection to designated premises. ... Ofs Fitel Llc

01/21/16 / #20160018615

Plug-and-play optical fiber distribution system

An optical fiber distribution system is disclosed. The distribution system has a cable combiner and a splitter housing. ... Ofs Fitel Llc

01/21/16 / #20160018612

Systems and methods for cable distribution

A fiber-optic system is disclosed in which a self-supporting cable comprises self-supporting break-out sub-cables, which provide fiber-optic connectivity to customer premises.. . ... Ofs Fitel Llc

01/21/16 / #20160018598

Collimating and concentrating light into an optical fiber

The present disclosure provides an optical design configured to achieve an increased concentration and improved coupling of light to an optical fiber for a passive lighting system. Light may be passed through a collector lens followed by collimation and concentration to yield improved coupling of light to an optical fiber. ... Ofs Fitel Llc

01/14/16 / #20160011389

Reduced diameter multimode optical fiber cables

Described are new cable designs for indoor installations wherein the cable comprises a dual-layer optical fiber buffer encasement of acrylate resin. The buffer encasement has an acrylate compliant inner layer that protects the fiber and minimizes stress transfer to the fiber; and a hard, tough acrylate outer layer that provides crush resistance. ... Ofs Fitel Llc

01/14/16 / #20160011018

Tdm- and wdm-based fbg sensor array system

In a tdm- and wdm-based fbg sensor array system, a source emits a light covering a selected wavelength range. The light is amplified and then used to generate a series of pulses that are fed into an array of sensor gratings. ... Ofs Fitel Llc

01/07/16 / #20160004025

Optical fiber seismic sensing cable

Described is an improved optical fiber cable specially adapted for seismic sensing. Compared with standard optical fiber cable, this improved optical fiber cable is reduced in size, lighter, and more flexible. ... Ofs Fitel Llc

01/07/16 / #20160003976

Statistical prediction functions for natural chaotic systems and computer models thereof

A method and apparatus for precipitation prediction is provided. In exemplary embodiments, the method may comprise, at a server having one or more processors and memory storing one or more programs for execution by the one or more processors: decomposing climate model attractors; receiving ground data in a region from a client as well as global data; reweighting and reordering the relative importance of the climate model attractors based on a rank and incorporating the ground data; reassembling a selected group of data including the ground data, thereby adding information to the climate model; and generating a prediction of regional weather based on the reassembled selected group of data.. ... Ofs Fitel Llc








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