Patents Examined by Hoang Q Tran
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Patent number: 11747574Abstract: A ferrule mold having a reverse-image of a through-hole array for optical fibers is formed. A non-polymeric ferrule material is deposited in the reverse-image mold, followed by removing the mold to create a multi-fiber connector ferrule having at least two fiber through-holes. An optical fiber is inserted in each through-hole until each fiber endface is positioned approximately even with a connection surface of the ferrule. A fiber recess for each of the optical fibers is formed such that each fiber is recessed from the multi-fiber ferrule connection surface by a distance of at least 0.1 micron. The recess may be formed by differential polishing of the non-polymeric ferrule and endfaces of the optical fibers. Alternatively, a layer of spacer material may be deposited over the multi-fiber ferrule connection surface. An antireflection coating is deposited over the ferrule connection surface and ends of the recessed fibers.Type: GrantFiled: April 16, 2021Date of Patent: September 5, 2023Assignee: Ningo Litas Optical Technologies Co. Ltd.Inventor: Benjamin B. Jian
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Patent number: 11740416Abstract: An optoelectronic element is located in a package. The package includes a first optical block and a second optical block that are attached to each other by a bonding layer. One of the first and second optical blocks is attached to lateral walls of the package by glue. The material of the bonding layer is configured to induce less stress to the first and second optical blocks than the glue.Type: GrantFiled: December 9, 2021Date of Patent: August 29, 2023Assignee: STMicroelectronics (Grenoble 2) SASInventors: Romain Coffy, Jean-Michel Riviere
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Patent number: 11740452Abstract: An optical device includes: a base that includes a main surface; a movable unit that includes an optical function unit; and an elastic support unit that is connected between the base and the movable unit, and supports the movable unit so that the movable unit is movable along a first direction perpendicular to the main surface. The elastic support unit includes a lever, a first torsion support portion that extends along a second direction perpendicular to the first direction and is connected between the lever and the movable unit, and a second torsion support portion that extends along the second direction and is connected between the lever and the base. A torsional spring constant of the first torsion support portion is greater than a torsional spring constant of the second torsion support portion.Type: GrantFiled: July 6, 2018Date of Patent: August 29, 2023Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tatsuya Sugimoto, Tomofumi Suzuki, Kyosuke Kotani
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Patent number: 11719890Abstract: Passive optical couplers having passive optical activity indicators and methods of operating the same are disclosed. An example passive optical coupler for passively coupling first and second optical fibers includes a housing including: a first port configured to receive an end of a first optical fiber, and a second port configured to receive an end of a second optical fiber; and a passive optical activity indicator positioned at least partially within the housing, wherein a first portion of the passive optical activity indicator is exposed through the housing, and wherein the passive optical activity indicator is configured to passively illuminate in response to (i) first light propagating in the first optical fiber when the end of the first optical fiber is received in the first port, and (ii) second light propagating in the second optical fiber when the end of the second optical fiber is received in the second port.Type: GrantFiled: June 16, 2022Date of Patent: August 8, 2023Assignee: FRONTIER COMMUNICATIONS HOLDINGS, LLCInventors: John Valdez, Steven Smith, Erwin Wardojo
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Patent number: 11703635Abstract: A delivery fiber assembly suitable for delivering broad band light and including a delivery fiber and a connector member. The delivery fiber has a length, an input end for launching light, and a delivery end. The delivery fiber includes along its length a core region and a cladding region surrounding the core region, the cladding region includes a cladding background material having a refractive index Nbg and a plurality of microstructures in the form of inclusions of solid material having refractive index up to Ninc and extending in the length of the longitudinal axis of the delivery fiber, wherein Ninc<Nbg. The plurality of inclusions in the cladding region is arranged in a cross-sectional pattern including at least two rings of inclusions surrounding the core region. The connector member is mounted to the delivery fiber at a delivery end section of the delivery fiber including the delivery end.Type: GrantFiled: August 19, 2021Date of Patent: July 18, 2023Assignee: NKT PHOTONICS A/SInventors: Johannes Weirich, Martin Dybendal Maack
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Patent number: 11703680Abstract: An optical device includes: a base that includes a main surface; a movable unit that includes an optical function unit; and an elastic support unit that is connected between the base and the movable unit, and supports the movable unit so that the movable unit is movable along a first direction perpendicular to the main surface. The elastic support unit includes a lever, a first torsion support portion that extends along a second direction perpendicular to the first direction and is connected between the lever and the movable unit, and a second torsion support portion that extends along the second direction and is connected between the lever and the base. A torsional spring constant of the first torsion support portion is greater than a torsional spring constant of the second torsion support portion.Type: GrantFiled: July 6, 2018Date of Patent: July 18, 2023Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tatsuya Sugimoto, Tomofumi Suzuki, Kyosuke Kotani
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Patent number: 11698495Abstract: A method for manufacturing a fan-in-fan-out device which does not require processing of a small-diameter hole and improves work efficiency of installation of an optical fiber, includes: arranging a first holding member in a hole of a second holding member, the hole being larger than an outer diameter of the first holding member, and holding a plurality of optical fibers between the first holding member and the second holding member respectively along a plurality of grooves formed on an outer periphery of the first holding member or an inner periphery of the hole of the second holding member; heating and integrally melting the arranged first holding member, the plurality of held optical fibers, and the second holding member in a portion including an axial end portion of the second holding member; and drawing the melted portion.Type: GrantFiled: May 17, 2021Date of Patent: July 11, 2023Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Ayumi Inoue
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Patent number: 11698505Abstract: A device may provide, to a user device, a first message instructing a technician to move fiber cables and may receive a first signal based on the technician moving the fiber cables and a rest signal based on the technician stopping movement of the fiber cables. The device may calculate a distance, an average peak signal, and a baseline signal based on the first signal and the rest signal and may calculate a data collection window based on the distance, the average peak signal, and the baseline signal. The device may provide, to the user device, a second message instructing the technician to move one fiber cable at a time and may receive second signals based on the technician moving one fiber cable at a time. The device may provide, for display to the user device, the data collection window and indications of the second signals.Type: GrantFiled: September 16, 2021Date of Patent: July 11, 2023Assignee: Verizon Patent and Licensing Inc.Inventors: Tiejun J. Xia, Glenn A. Wellbrock
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Patent number: 11668883Abstract: The present disclosure relates to system and method for cleaning an end face of a bare optical fiber (100). The system and methods include inserting the end face of the bare optical fiber (100) through a layer of material (500) that includes electrospun fibers.Type: GrantFiled: May 10, 2021Date of Patent: June 6, 2023Inventors: Jan Watte, Stefano Beri, Danny Willy August Verheyden, Sangram Keshari Samal, Ana Margarida Doamaral Cardoso Dos Santos, Peter Martha Dubruel, Ana Nedelcheva Hristova
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Patent number: 11650475Abstract: Driving an optical modulator is described. A control circuit generates first and second input voltages based on a target phase modulation between first and second optical waveguide arms of the optical modulator. An offset control circuit generates first and second offset signals. A linear modulator driver receives the first and second offset signals, generates a first output voltage for biasing the first optical waveguide arm using the first offset signal, and generates a second output voltage for biasing the second optical waveguide arm using the second offset signal. Feedback circuitry can feed the first and second output voltages to the offset control circuit, which can generate the first and second offset signals using the first and second output voltages. The output voltages bias the waveguide arms so the optical modulator operates close to the target phase modulation, even in the presence of manufacturing errors.Type: GrantFiled: January 5, 2021Date of Patent: May 16, 2023Assignee: Ciena CorporationInventors: Michael Vitic, Christopher Edgar Falt, Alexandre Delisle-Simard, Michel Poulin
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Patent number: 11650374Abstract: The present disclosure relates to optical fiber alignment devices and systems for use in implementing optical splices between optical fibers. In certain examples, the optical fiber alignment devices and systems can include fiber alignment structures capable of clamping optical fibers in a co-axially aligned orientation.Type: GrantFiled: August 29, 2019Date of Patent: May 16, 2023Assignee: COMMSCOPE TECHNOLOGIES LLCInventors: Danny Willy August Verheyden, Debora Dockx
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Patent number: 11604315Abstract: A display assembly presented herein includes an inset display, a peripheral display, and a multiplexing optical assembly (MOA). The inset display has a first resolution and emits image light of a first polarization. The peripheral display has a second resolution and emits image light of a second polarization. The MOA receives the image light of the first polarization and the image light of the second polarization. The MOA then transforms the image light of the first polarization into a first portion of image light of a third polarization, and transforms the image light of the second polarization into a second portion of image light of the third polarization. The MOA directs the first portion of image light and the second portion of image light toward an eye-box. The display assembly can be implemented as a component of a head-mounted display of an artificial reality system.Type: GrantFiled: July 22, 2020Date of Patent: March 14, 2023Assignee: Meta Platforms Technologies, LLCInventors: Brian Wheelwright, Ying Geng
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Patent number: 11579379Abstract: A fiber optic adapter assembly reduced in size from a SFP footprint to a SC footprint to accommodate a first fiber optic connector on a first side within one or more ports, and a second fiber optic connector on a second side within one or more ports. The first fiber optic connector is a duplex fiber optic connector with an overall length of about 50 mm and the second fiber optic connector is a behind-the-wall connector with an overall length of about 15 mm thereby reducing the overall length of a connector and adapter assembly for increasing optical fiber density.Type: GrantFiled: March 30, 2020Date of Patent: February 14, 2023Assignee: Senko Advanced Components, Inc.Inventors: Jimmy Chang, Kazuyoshi Takano, Paul Newbury
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Patent number: 11561354Abstract: A butt closure base includes a base housing extending along a longitudinal axis between a first outer surface and a second outer surface, the base housing defining a plurality of cavities between the first and second outer surfaces, the plurality of cavities aligned in an annular array. A first gel is disposed in each of the plurality of cavities. The butt closure base further includes a plurality of wedge assemblies, each of the plurality of wedge assemblies removably insertable into one of the plurality of cavities. Each of the plurality of wedge assemblies includes an outer cover, a second gel, and a main pressure plate in contact with the second gel. The main pressure plate is movable along the longitudinal axis to apply pressure to the second gel.Type: GrantFiled: May 9, 2019Date of Patent: January 24, 2023Assignee: AFL Telecommunications LLCInventors: David Wittmeier, Eddie Kimbrell
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Patent number: 11555975Abstract: A telecommunications component includes an outer housing that includes a badge holder. The badge holder is configured to receive a badge. The badge is configured to be inserted into the badge holder. The badge includes a feature that is identifying of the source of the telecommunications component and the feature is at least one of a logo, a specific color, text information, a barcode, a QR code, and a RFID tag. The badge includes a pair of arms extending from opposing sides to engage with the badge holder of outer housing. The badge includes a securing feature that is configured to secure the badge within the badge holder.Type: GrantFiled: March 29, 2019Date of Patent: January 17, 2023Assignee: CommScope Technologies LLCInventors: Johan Geens, Roel Modest Willy Bryon, Pieter Doultremont, Philippe Coenegracht
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Patent number: 11555974Abstract: Disclosed is an armored fire resistant fiber optic cable including a core comprising a central strength member, and a plurality of buffer tubes arranged around said central strength member, each buffer tube containing a plurality of optical fibers; a first mica layer arranged around the core; an inner sheath surrounding the first mica layer; a metal wire armor surrounding the inner sheath; and an outer sheath surrounding and in direct contact with the metal wire armor, wherein a second mica layer surrounds the inner sheath and the metal wire armor surrounds the second mica layer.Type: GrantFiled: January 29, 2018Date of Patent: January 17, 2023Assignee: Prysmian S.p.A.Inventors: Zekeriya Sirin, Baris Soenmez, Can Altingoez
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Patent number: 11550200Abstract: One illustrative device disclosed herein includes a lower waveguide structure and an upper body structure positioned above at least a portion of the lower waveguide structure. In this example, the device also includes a grating structure positioned in the upper body structure, wherein the grating structure comprises a plurality of grating elements that comprise a tunable material whose index of refraction may be changed by application of energy to the tunable material.Type: GrantFiled: March 4, 2020Date of Patent: January 10, 2023Assignee: GlobalFoundries U.S. Inc.Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
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Patent number: 11543609Abstract: An optical fiber cable including a central strength member extending along a longitudinal axis of the optical fiber cable and a plurality of buffer tubes that are wound around the central strength member. Each of the plurality of buffer tubes includes a first material having a modulus of elasticity of at most 600 MPa at room temperature and a peak heat release rate (PHRR) of at most 300 kW/m2 as measured according to ASTM E1354. A cable jacket is disposed circumferentially around the plurality of buffer tubes and extends along the longitudinal axis.Type: GrantFiled: August 6, 2021Date of Patent: January 3, 2023Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATIONInventors: Jie Feng, William Carl Hurley, Martina Petra Richter-Bühling
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Patent number: 11531178Abstract: An apparatus implements a fiber breakout assembly. The fiber breakout assembly includes a tube and a plug. The tube includes a trunk portion and a plug receiving portion. The plug includes multiple entry holes and is configured to be inserted into the plug receiving portion of the tube. A crimp post is formed as part of the tube and includes one or more crimp retention features.Type: GrantFiled: May 5, 2021Date of Patent: December 20, 2022Assignee: ViaPhoton, Inc.Inventors: Walter Mark Hendrix, James Patrick Nolan, Nathan Eric Benton, Syed Babar Abbas
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Patent number: 11487070Abstract: A fiber distribution hub includes an enclosure defining an interior region and a frame body having a longitudinal axis. The frame body is rotatably mounted within the interior region of the enclosure such that the frame body can rotate about the longitudinal axis relative to the enclosure between a first terminal angular position and a second terminal angular position. The frame body is rotatably mounted within the interior region of the enclosure also such that the entire frame body remains within the interior region as the frame body rotates between the first terminal angular position and the second terminal angular position. The fiber distribution hub also includes a splitter coupled to the frame body and having a splitter input and a splitter output.Type: GrantFiled: May 19, 2020Date of Patent: November 1, 2022Assignee: OPTERNA AM, INC.Inventors: K. R. Suresh Nair, Kizhakkekuttu Parameswaran Chandran, Mathew Anjilimoottil Thomas, Biji Mathew Arakkakudy, Binoy J. Puthussery, E. K. Kiran Kumar, Beevi M. Mohammedali, P. V. Ashwin, Benoy Sarasan, Randy Reagan