With Splice (permanent Connection) Patents (Class 385/95)
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Publication number: 20090252462Abstract: An optical box includes a first part suitable for fastening to an optical fibre distribution cable and a second part having an opening intended for the passage of at least one optical fibre dropped from the distribution cable and at least one optical component positioned in the second part for connecting the dropped optical fibre to at least one optical fibre of a subscriber cable. The second part of the optical box is fastened detachably to the first part of the optical box. The optical box combines the dropping and splicing of optical fibres in a single optical box.Type: ApplicationFiled: April 8, 2009Publication date: October 8, 2009Inventor: Jean-Pierre Bonical
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Optical Waveguide Splice Apparatus and Method for Performing a Splice of at Least Two Optical Fibers
Publication number: 20090232458Abstract: An optical waveguide splice apparatus, comprises a camera adapted to record an image of at least two optical waveguides, a screen, a control unit coupled to the screen to generate a display representation to be displayed on the screen, wherein the display representation comprises a first region comprises a first portion of the recorded image and a second region comprising a second portion of the recorded image, a semitransparent layer and information about a splice process.Type: ApplicationFiled: September 30, 2008Publication date: September 17, 2009Inventors: Johann Simon Daniel Hess, Bryan R. Roark -
Publication number: 20090232457Abstract: A splicer comprises a chassis with an opening in which a splicing unit for splicing of optical waveguides is arranged. The splicer can be controlled via a control and display apparatus. A splicing cassette carrier is arranged rotatably on the chassis. The splicing cassette carrier is designed such that it can be used both for fixing a splicing cassette or else as a carrying handle for the splicer. Furthermore, the splicer has a control unit via which the splicer is switched to an active operating mode or to a standby mode, as a function of the rotation position of the splicing cassette carrier. When the splicing cassette carrier is open, the light intensity of background lighting for the display apparatus and the light intensity of a lighting device can be controlled so they are variable. The reduced power consumption associated with this allows the operational readiness of the splicer to be lengthened.Type: ApplicationFiled: March 1, 2007Publication date: September 17, 2009Inventors: Thomas Detemple, Heinz Kronawitter, Marco Forlenza, Christian Heidler, Martin Klahr, Rainer Kossat
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Patent number: 7563032Abstract: A fiber optic connection is formed by a first connector including a first bench and a second connector. The first bench includes a first lens, an optical fiber in optical communication with the first lens, and a resting area. The first lens is attached to the first bench by an epoxy. The resting area is formed by a material having a hardness which is substantially equal to or greater than a hardness of a second lens which resides in the resting area when the second connector is mated to the first connector. The resting area can be formed by a hard layer over a softer material forming the remainder of the first bench. The epoxy may include additives which lower a thermal expansion coefficient of the epoxy.Type: GrantFiled: June 19, 2007Date of Patent: July 21, 2009Assignee: Commscope, Inc. of North CarolinaInventors: Jeffrey D. Nielson, Matthew Cruz
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Patent number: 7559706Abstract: A light-amplifying fiber arrangement including a pump fiber including glass and a bridge element. At least a portion of a side of the bridge element has been fused to at least a portion of a side of the pump fiber. An active fiber includes a light-amplifying core and a first cladding. The first cladding includes glass. At least a portion of a side of the active element has been fused to at least a portion of a side of the bridge element. A second cladding surrounds the pump and active fibers in order to confine pump light to the fibers. The second cladding includes glass. The arrangement allows coupling of high power levels into the pump fiber, wherein splicing of pigtails to the arrangement is easier than e.g. in case of conventional doubly clad fibers.Type: GrantFiled: August 31, 2007Date of Patent: July 14, 2009Assignee: Liekki OyInventors: Simo Tammela, Per Stenius
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Patent number: 7556441Abstract: An optical connector configured to connect a pair of coated optical fibers, each of which includes an exposed leading end of optical fiber, and a process to connect a pair of coated optical fibers using the connector. The connector includes: a connector body including a fine hole portion for housing and mutually butting the exposed leading ends of the pair of coated optical fibers, a first receiving portion and a second receiving portion, which are disposed at both outer sides in the axial direction of the fine hole portion, for housing the individual coated optical fibers without pressing the coating, and a holding portion, which is disposed at an outer side in the axial direction of the fine hole portion and at a side of the first receiving portion against the fine hole portion, for housing one of the coated optical fibers and holding the coated optical fiber by pressing the coating.Type: GrantFiled: November 21, 2007Date of Patent: July 7, 2009Assignee: Kabushiki Kaisha ToshibaInventor: Hideto Furuyama
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Patent number: 7558459Abstract: A splice holder device includes a tray mountable in a telecommunications closure, the tray including a splice mounting mechanism configured to receive a splice device. The splice holder device also includes first and second fiber clamps disposed on the tray, wherein the first and second fiber clamps are each configured to releasably secure a buffered portion of an optical fiber. The tray can include a single splice device, such as a mechanical splice, mounted therein or can include a plurality of splice devices mounted therein. The splice holder device can be configured to be securedly mounted in a telecommunications enclosure.Type: GrantFiled: February 12, 2008Date of Patent: July 7, 2009Assignee: 3M Innovative Properties CompanyInventors: James B. Carpenter, Douglas P. Hills, Chansool Park, Donald K. Larson, Paul N. Winberg
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Patent number: 7556438Abstract: An angle type optical connector enables a splicing operation of an optical fiber cable accurately and stably without requiring skilled labor and having a superior on-site installation property. An optical connector is provided with a splicing section for securely supporting an incorporated optical fiber securely supported at a ferrule and an optical fiber of an outside optical fiber cable in an end-abutting condition. The body of the optical connector is provided with a cable holding member able to hold an optical fiber cable. The cable holding member can be set at a temporary position where it makes an optical fiber of the optical fiber cable abut against the incorporated optical fiber at the splicing section in the state holding the optical fiber cable and bends a covered optical fiber of the optical fiber cable between the splicing section and the cable holding member by a pressing force in the lengthwise direction.Type: GrantFiled: June 23, 2005Date of Patent: July 7, 2009Assignees: 3M Innovative Properties Company, Nippon Telegraph and Telephone CorporationInventors: Tomayasu Oike, Takaya Yamauchi, Akihiko Yazaki, Tsunetaka Ema, Kenichi Nakazawa, Yasuhiko Hoshino
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Patent number: 7555188Abstract: A method and apparatus for processing an optical fiber includes generating a continuous or pulsed arc in a first area wherein the arc creates a plasma in one or more gasses in the first area. The method further includes positioning a portion of the fiber in a second area adjacent to and outside of the plasma region, wherein coating material that is present on the optical fiber portion is removed when the plasma is present. Alternatively, in the case of a pulsed arc, the optical fiber portion may be positioned at least partially within the plasma region. The positioning step may be performed prior to or subsequent to the arc generating step. The method and apparatus may be utilized in a system that also strips and cleaves optical fibers. Also, a method for reducing the gap resistance between two electrodes by injecting negative ions into the area between the electrodes.Type: GrantFiled: August 5, 2005Date of Patent: June 30, 2009Assignee: 3SAE Technologies, Inc.Inventors: Robert G. Wiley, Donald Grasso, Steven A. Valle, Sam Aderogba, Jared Meitzler, Clyde Troutman, Christopher Williams
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Patent number: 7551822Abstract: A nonlinear optical signal-treating apparatus can suppress the distortion of pulse light to be inputted into an optical fiber to an allowable level or less. The apparatus comprises a pulse light source for outputting first pulse light, a first optical fiber, a second optical fiber that is spliced with the first optical fiber and has a mode-field diameter smaller than that of the first optical fiber, and a light-introducing system for inputting the first pulse light into the first optical fiber. The second optical fiber receives the first pulse light and generates second pulse light having a newly produced wavelength. The peak power ratio of the first pulse light outputted from the first optical fiber to that inputted into the first optical fiber and the pulse width ratio of the first pulse light outputted from the first optical fiber to that inputted into the first optical fiber are 0.5 to 1.5.Type: GrantFiled: February 25, 2008Date of Patent: June 23, 2009Assignee: Sumitomo Electric Industries, Ltd.Inventor: Toshiaki Okuno
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Publication number: 20090136185Abstract: A splice tray arrangement including a tray and a splice chip. The splice chip includes a plurality of arms that define channels for holding splice elements. The arms include retaining structure for retaining a splice element in both of either one of an upper region and a lower region of a channel. The splice tray arrangement also includes a mounting arrangement for securing the splice chip to the tray at a mounting location. The mounting arrangement includes sliding interlock guides disposed on each of the splice chip and the tray. The mounting arrangement further includes flexible tabs arranged to prevent lateral movement of the splice chip when positioned at the mounting location.Type: ApplicationFiled: November 19, 2008Publication date: May 28, 2009Applicant: ADC Telecommunications, Inc.Inventors: Yilmaz Bayazit, Chad Raskovich, Oscar Bran De Leon
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Patent number: 7539389Abstract: The present invention relates generally to an angled optical fiber cleaver that is used to cleave optical fibers prior to mechanical splicing and that provides a desired optical fiber endface angle. More specifically, the present invention relates to an angled optical fiber cleaver that incorporates a novel retention and rotation clamp assembly that successively engages, securely holds, and rotates an optical fiber prior to cleaving, this rotation providing the desired optical fiber endface angle. Advantageously, the novel retention and rotation and clamp assembly of the present invention is actuated via a single linear button press/release, eliminating the cumbersome steps associated with conventional devices and methodologies.Type: GrantFiled: February 8, 2008Date of Patent: May 26, 2009Assignee: Corning Cable Systems LLCInventors: Jonathan Michael Brinson, Joshua Douglas Raker
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Patent number: 7534055Abstract: An optical fiber link has a plurality of optical fiber spans joined one to the other, the plurality of optical fiber spans including at least one first unidirectionally-spun optical fiber span and at least one second unidirectionally-spun optical fiber span having mutually opposite spinning directions.Type: GrantFiled: December 16, 2004Date of Patent: May 19, 2009Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Alexis Debut, Francesco Sartori, Martino Travagnin
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Patent number: 7529455Abstract: An optical integrated device having multiple optical waveguides connected on the same substrate and each including a core and a cladding is disclosed. Adjacent two of the optical waveguides are different in the refractive index difference between the core and the cladding.Type: GrantFiled: August 9, 2006Date of Patent: May 5, 2009Assignee: Ricoh Company, Ltd.Inventors: Shuichi Suzuki, Atsushi Sakai
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Publication number: 20090103870Abstract: A splicing method and splicing kit are suitable for creating a multimode mechanical splice. The splice may be used, for example, in Aircraft Battle Damage Repair operations. The splice utilizes two cylindrical inner crimp sleeves and an outer crimping assembly. The inner crimp sleeves are placed over prepared fiber cable ends, and the fiber core is cleaved. The cable ends are then inserted into an outer cannula of the outer crimping assembly. The cannula guides the inner crimp sleeves, and the cleaved fiber ends enter a glass ferrule in the cannula. The glass ferrule has a triangular bore containing an index matching gel. A window in the cannula and a magnifying viewer are provided to visually confirm the splice quality. The fibers may be cleaved by forming a circumferential score on the fiber.Type: ApplicationFiled: October 23, 2007Publication date: April 23, 2009Inventors: Thomas Solomon, Donald Johnson, Steven Mersch
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Publication number: 20090087150Abstract: A polymer based index-matching gel for use with nanostructure optical fibers is disclosed. The index-matching gel has a viscosity ? at 25° C. of 3 Pa-s???100 Pa-s, which prevents the index-matching gel from wicking into the voids and down the nanostructure optical fiber to a depth where the fiber performance and/or device performance is compromised. The gel is suitable for use when mechanically splicing optical fibers when at least one of the optical fibers is a nanostructure optical fiber. The gel is also suitable for use in fiber optic connectors wherein at least one of the optical fibers constituting the connection is a nanostructure optical fiber.Type: ApplicationFiled: November 15, 2007Publication date: April 2, 2009Inventors: Seldon David Benjamin, Dana Craig Bookbinder, Timothy Edward Myers, Michael Heath Rasmussen
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Patent number: 7510339Abstract: An splice enclosure for supporting a splice between the ends of a pair of fiber optic drop cables includes at least one longitudinally-extending flexible support member extending across the splice, a cover member which covers the splice and which overlaps the jackets of the two cables, and at least one collar. Each collar has a central aperture through which the buffer tube of a cable can be passed, at least one aperture for receiving a strength member of one of the cables, and at least one aperture for receiving an end of a support member. The support members preferably have similar or identical dimensions, composition and flexibility as the strength members of the cables so as to substantially preserve the flexibility of the cable across the splice. Also disclosed are kits for forming enclosures for optical fiber splices and methods for enclosing optical fiber splices.Type: GrantFiled: July 24, 2008Date of Patent: March 31, 2009Assignee: ShawCor Ltd.Inventors: Doug Burwell, Ibrahim Basrawi, Glen Brehaut
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Patent number: 7508848Abstract: A fiber Chirped Pulse Amplification (CPA) laser system includes a photonics band gap (PBG) fiber to function as a compressor. The PBG fiber is spliced with a fiber end cap that has an core expander for increasing a mode area of the PBG fiber. With increased mode area, the laser system is enabled to sustain an increased damage threshold energy thus is capable of producing short pulse laser with higher pulse energy.Type: GrantFiled: July 7, 2006Date of Patent: March 24, 2009Assignee: PolaronyxInventors: Lih-Mei Yang, Jian Liu
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Patent number: 7503707Abstract: Methods for splicing optical fibers include coupling a first optical fiber cable to a longitudinally extending closure frame and coupling a second optical fiber cable to an adjustable guide member on the closure frame. The adjustable guide member is moved toward the first optical fiber cable to provide a distance between the first and second optical fiber cable less than an exposed length of the first and second optical fiber therebetween to provide a slack length of optical fiber. Cleaved exposed ends of a first optical fiber from the first optical fiber cable and a second optical fiber from the second optical fiber cable are positioned proximate each other in a splice station displaced from the closure frame utilizing the slack length of optical fiber. The first and second optical fibers are spliced in the splice station and the adjustable guide member is moved away the first optical fiber cable to remove the slack length and position the spliced optical fibers in the closure frame.Type: GrantFiled: November 6, 2007Date of Patent: March 17, 2009Assignee: Tyco Electronics CorporationInventors: Craig Ray, Jackie Moore
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Publication number: 20090060428Abstract: Apparatus for accessing a length of a selected one or more of a plurality of optical fibers within an outer protective jacket of a cable including the plurality of optical fibers and at least one strength member extending longitudinally therein include a cable positioning fixture. The cable positioning fixture is configured to receive a portion of the cable therein and to establish a desired orientation of the portion of the cable in the fixture relative to the at least one strength member therein while a cutting member removes a scalloped segment from the outer protective jacket.Type: ApplicationFiled: August 19, 2008Publication date: March 5, 2009Inventors: Julian Mullaney, Justin Everette Thompson, Eric Troy Byrd
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Publication number: 20090060427Abstract: A quick terminating fiber optic assembly and method of making same is provided. A pre-terminated fiber optic assembly having an optical fiber already terminated therein includes an exposed optical fiber. The exposed fiber is aligned and contacted with a second exposed optical fiber of another optical cable, and the two fibers are spliced. A sleeve is provided to cover and protect the splice and any exposed fibers. The sleeve secures the pre-terminated fiber optic termini to second optical fiber. This process terminates the second optical fiber at the termini in less time and with the same or similar tools as a conventional method of terminating optical fibers at a termini.Type: ApplicationFiled: November 30, 2007Publication date: March 5, 2009Inventor: Vincent A. Wouters
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Patent number: 7494289Abstract: An optical fiber splice protector is provided which includes a first tube being substantially hollow and being locatable along a portion of the length of at least one optical fiber, the portion including a bare optical fiber section of the optical fiber. A longitudinal support is also locatable along the portion of the length of the optical fiber that includes the bare optical fiber splice section of the optical fiber, the longitudinal support being enclosable by the first tube along the length of the optical fiber. The first tube is of high temperature resistant material that is resistant to temperatures above 125 degrees Celsius.Type: GrantFiled: October 10, 2007Date of Patent: February 24, 2009Assignee: Schlumberger Technology CorporationInventor: Yuehua Chen
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Patent number: 7493044Abstract: A method of transmitting data includes receiving a plurality of downstream wavelength streams from a first optical fiber, each wavelength stream corresponding to a separate downstream data transmission, passing all downstream streams but at least one downstream targeted-wavelength stream to a second optical fiber, and routing the downstream targeted-wavelength stream to a subscriber on a third optical fiber, wherein the first optical fiber, the second optical fiber, and the third optical fiber are connected to a single device, and wherein the third optical fiber is a drop cable.Type: GrantFiled: April 28, 2005Date of Patent: February 17, 2009Assignee: Corning Cable Systems, LLCInventors: David R. Kozischek, Karl T. Messmer
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Patent number: 7488125Abstract: A covering device for a high voltage part in an optical fiber fusion splicer includes a cover body, removably connectable to a support table, including an electrode holder adapted to removably hold an electrode rod. The covering device includes an electrode retainer removably connectable to the cover body, adapted to press the electrode rod against the support table.Type: GrantFiled: January 24, 2005Date of Patent: February 10, 2009Assignee: Fujikura Ltd.Inventors: Kenji Takahashi, Taku Otani, Manabu Tabata
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Publication number: 20090034917Abstract: An splice enclosure for supporting a splice between the ends of a pair of fiber optic drop cables includes at least one longitudinally-extending flexible support member extending across the splice, a cover member which covers the splice and which overlaps the jackets of the two cables, and at least one collar. Each collar has a central aperture through which the buffer tube of a cable can be passed, at least one aperture for receiving a strength member of one of the cables, and at least one aperture for receiving an end of a support member. The support members preferably have similar or identical dimensions, composition and flexibility as the strength members of the cables so as to substantially preserve the flexibility of the cable across the splice. Also disclosed are kits for forming enclosures for optical fiber splices and methods for enclosing optical fiber splices.Type: ApplicationFiled: July 24, 2008Publication date: February 5, 2009Applicant: SHAWCOR LTD.Inventors: Doug Burwell, Ibrahim Basrawi, Glen Brehaut
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Publication number: 20090003778Abstract: A fiber optic cable assembly comprising a fiber optic cable having a plurality of optical fibers disposed within a cable sheath and having an access point through the cable sheath for accessing and preterminating at least one of the plurality of optical fibers, at least one tether attached about the access point, the at least one tether having at least one optical fiber disposed within a cable sheath, and a flexible closure substantially encapsulating the access point, a portion of the fiber optic cable and a portion of the at least one tether. At least one preterminated fiber of the fiber optic cable is spliced to the at least one optical fiber of the at least one tether, and spliced together fiber portions of the at least one preterminated fiber and the at least one tether optical fiber are not maintained within a splice tube.Type: ApplicationFiled: June 29, 2007Publication date: January 1, 2009Inventors: Robert Bruce Elkins, II, Brenda Dianne Craig, Lars Kristian Nlelsen, Michael Todd Faulkner
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Patent number: 7465106Abstract: An optical receptacle includes: a fiber stub having a ferrule and an optical fiber in a through-hole of the ferrule; a holder to which an rear end of the fiber stub is fixed; and a sleeve for holding a plug ferrule in front of the fiber stub; wherein a grip ring is provided on an outer side face in which the fiber stub and the sleeve are overlapped to each other, whereby attaining the shortened optical receptacle, and improving connection loss due to tilting of the plug ferrule, and obtaining good repeatability of the connection loss.Type: GrantFiled: June 28, 2004Date of Patent: December 16, 2008Assignee: Kyocera CorporationInventors: Hiroki Ito, Tsuyoshi Tanaka, Toshiyuki Matsumoto
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Patent number: 7461983Abstract: A splice for connecting two segments of optical fiber cable, the splice comprising: (a) an elongated housing having a first end with a first opening, a second end with a second opening, and a central cavity, the housing being essentially seamless between the first and second ends; (b) a clamping mechanism disposed in the central cavity and comprising at least a platform defining a fiber-receiving channel open to both first and second openings, a first member adjacent to the fiber-receiving channel and having at least one cam surface, and a second member having a second cam surface, the first and second cam surfaces cooperating such that relative movement of the first and second members toward the first end causes the first member to move toward the fiber-receiving channel and an actuator to cause relative movement of the first and second members toward the first end; (c) a first buffer crimp disposed at the first opening; and (d) a second buffer crimp disposed at the second opening.Type: GrantFiled: December 3, 2007Date of Patent: December 9, 2008Assignee: Tyco Electronics CorporationInventors: Michael Lawrence Gurreri, Lou Castagna, David Donald Erdman
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Patent number: 7455464Abstract: The invention relates to a process of preparing an optical fiber joint, wherein an optical fiber or its undrawn precursor is brought into contact with a longitudinal element and attached to it via a ridge-groove fitting prior to drawing of the final optical fiber joint. The longitudinal element can be another optical fiber or its precursor or a removable and/or workable bridging element.Type: GrantFiled: February 22, 2006Date of Patent: November 25, 2008Assignee: Liekki OyInventors: Simo Tammela, Kalle Ylä-Jarkko
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Publication number: 20080267567Abstract: An optical splicer 2 according to an embodiment of the present invention has a plurality of optical fibers 6, and an optical splice member 8 having a plurality of fiber holes 14 in each of which a portion including one end 6a of each fiber 6 is inserted, and a mode field diameter W1 in one end 6a of optical fiber 6 is enlarged relative to a mode field diameter W2 in the other portion of optical fiber 6.Type: ApplicationFiled: October 31, 2007Publication date: October 30, 2008Applicant: Sumitomo Electric Industries, Ltd.Inventors: Kazuhito Saito, Mitsuaki Tamura, Maki Ikeji, Hiroshi Kohda, Eiichiro Yamada
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Patent number: 7440652Abstract: A WDM coupler includes a first collimator including a single fiber pigtail, a first GRIN lens and a first glass holding tube; a second collimator including a dual fiber pigtail, a second GRIN lens and a second glass holding tube; an optical filter arranged on an end surface of the second GRIN lens of the second collimator; an outer glass sleeve bridging the first and second collimators; and UV-curing epoxy between the outer glass sleeve and the glass holding tubes of the first and second collimators for securing the first and second collimators to the outer glass sleeve. The expansion coefficient of the UV-curing epoxy is matched to that of the glass materials of the outer glass sleeve and the first and second holding tubes, so that the first and second collimators can directly be fixed in the outer glass sleeve using the UV-curing epoxy.Type: GrantFiled: June 8, 2004Date of Patent: October 21, 2008Assignee: O-Net Communication (SZ) Ltd.Inventors: Zeqin Wang, Bin Chen, Yi Li
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Publication number: 20080247714Abstract: An optical fiber/glass tube fusion spliced structure includes an optical fiber made of glass and a glass tube through which the optical fiber is inserted and at least in part of the optical fiber/glass tube fusion spliced structure, an outer circumference portion of the optical fiber and an inner circumference portion of the glass tube are fusion spliced. Part of the fusion spliced portion located in one of the optical fiber and the glass tube is formed of a material having a lower fusion point than a fusion point of part of the fusion spliced portion located in the other.Type: ApplicationFiled: April 3, 2007Publication date: October 9, 2008Inventors: Mamoru Nakamura, Takeshi Satake, Motohiko Yamasaki, Moriyuki Fujita, Kenji Sato, Yoshiki Yamakawa
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Patent number: 7428365Abstract: The present invention relates generally to an angled optical fiber cleaver that is used to cleave optical fibers prior to mechanical splicing and that provides a desired optical fiber endface angle. More specifically, the present invention relates to an angled optical fiber cleaver that incorporates a novel retention and rotation clamp assembly that successively engages, securely holds, and rotates an optical fiber prior to cleaving, this rotation providing the desired optical fiber endface angle. Advantageously, the novel retention and rotation and clamp assembly of the present invention is actuated via a single linear button press/release, eliminating the cumbersome steps associated with conventional devices and methodologies.Type: GrantFiled: March 29, 2007Date of Patent: September 23, 2008Assignee: Corning Cable Systems LLCInventors: Jonathan Michael Brinson, Joshua Douglas Raker
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Patent number: 7425099Abstract: An air-clad optical fiber is provided having a core that is surrounded by an inner cladding region, an air-clad region, and an outer region. A lead end of the air-clad optical fiber is prepared for splicing by removing the air-clad region and all fiber regions outside of the air-clad region, so as to expose an inner fiber region. The prepared lead end of the air-clad optical fiber is then spliced to a lead end of the optical device. The air-clad region may be removed from a selected portion of an air-clad fiber by causing an etchant gas to stream through the air-clad region in the selected portion of the fiber. Heat is then applied to the selected fiber portion, causing at least some of the microstructure to be etched away.Type: GrantFiled: April 10, 2007Date of Patent: September 16, 2008Assignee: Furukawa Electric North America, Inc.Inventors: Jorgen Ostgaard Olsen, Torben Erik Veng
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Patent number: 7422378Abstract: The present disclosure relates to a telecommunications cable including a distribution cable and a tether that braches from the distribution cable at a mid-span breakout location. A flexible closure covers the mid-span breakout location. Within the closure, fibers are broken out from the distribution cable and spliced to fibers of the tether. The lengths of broken out fibers within the flexible closure are provided with sufficient excess fiber length to allow the closure to be readily bent/flexed in any direction without damaging the fibers.Type: GrantFiled: July 21, 2006Date of Patent: September 9, 2008Assignee: ADC Telecommunications, Inc.Inventors: Yu Lu, Keith Millea, Jeff Gniadek
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Patent number: 7412146Abstract: A splice protection heater capable of quickly and efficiently performing a fusion process without an excessive heating time, a fusion splicer including the splice protection heater, and a fusion splicing method are provided. The apparatus has a heating part for heat shrinking a protection sleeve that covers a fusion spliced portion of an optical fiber, a plurality of heating elements that can individually heat a plurality of protection sleeves with different timings by being individually turned ON/OFF by switches, or a heating element turned ON/OFF by a switch. This apparatus may also be provided with detecting section that detects whether or not the protection sleeve is set on the heating element, and turns the switch ON/OFF.Type: GrantFiled: June 6, 2006Date of Patent: August 12, 2008Assignee: Sumitomo Electric Industries, Ltd.Inventors: Ryuichiro Sato, Kensuke Ito, Tsutomu Watanabe
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Patent number: 7410308Abstract: A new fiber optic cable splice for splicing optical fiber cables together and reconstructing fiber-optic cable that provide substantially enhanced reliability and broadened operating temperature range is disclosed. The disclosed cable splice offer reliable and user friendly solutions to applications in many harsh environments such as avionics, field vehicles, and defense related instrumentation. The cable splice consists of a preassembled one piece splice core and outer mechanical and thermal shielding layers. A simple splicing procedure and key fixtures are also disclosed.Type: GrantFiled: May 24, 2007Date of Patent: August 12, 2008Assignee: All Optronics, Inc.Inventors: Charles Qian, Katherine X. Liu
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Patent number: 7403686Abstract: The invention is a staggered splice and method for making the same. The staggered splice is used to join two multi-fiber optic cables. Each opposing pair of optic fibers is cleaved such that they all have substantially the same combined length and provide fully operable communication. The light transmitting interfaces are staggered with respect to each other. The individual splices can be mechanical or fusion splices. The splices are typically bundled and protected with a sheath. The staggered splice is particularly applicable for connecting torpedo payout spools wound with the multi-fiber optic micro cable to the shipboard side wire.Type: GrantFiled: November 30, 2006Date of Patent: July 22, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventor: Harry Zervas
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Publication number: 20080170828Abstract: An indoor fiber optic cable assembly comprising a flame retardant fiber optic distribution cable comprising at least one network access point at which at least one optical fiber is preterminated, a flame retardant flexible closure substantially enclosing the at least one network access point, and at least one tether secured about the flexible closure and comprising at least one optical fiber within that is optically connected with the at least one preterminated optical fiber of the distribution cable. The flexible closure may be overmolded or a heat shrink and the cable and closure are riser, plenum or low smoke zero halogen rated, among others. Tethers may be splice ready, connectorized or terminate in a multi-port connection terminal.Type: ApplicationFiled: January 12, 2007Publication date: July 17, 2008Inventors: Robert Bruce Elkins, Samuel Don Nave, Donald Kennedy Hall
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Patent number: 7393148Abstract: A splice enclosure assembly is provided for enclosing a splice between first and second fiber optic cables, the first and second fiber optic cables each having a jacket, an elongate optical fiber and at least one flexible, elongate strength member extending through the jacket. The splice enclosure assembly includes an elongate bridge member and an elongate cover member. The elongate bridge member has first and second opposed ends. The bridge member defines a channel extending axially between the first and second ends. The elongate bridge member includes an intermediate portion and first and second strain relief coupling structures. The intermediate portion is disposed between the first and second ends and has an intermediate portion of the channel defined therein. The bridge member is configured to receive the first and second fiber optic cables in the channel such that the splice is disposed in the intermediate portion of the channel.Type: GrantFiled: November 20, 2006Date of Patent: July 1, 2008Assignee: Tyco Electronics CorporationInventors: Barry Wayne Allen, Erik David Bishop
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Publication number: 20080131061Abstract: A forming method of a refractive index matching film comprises steps: one end of an optical fiber is brought into contact with a liquid surface of a photo-curable refractive index matching solution; curing reaction light is made incident to the opposite end of the optical fiber and is emitted through the one end of the optical fiber so as to cure preliminarily the photo-curable refractive index matching solution in contact with the one end of the optical fiber; the curing reaction light is tentatively stopped; the one end of the optical fiber is separated from the liquid surface of the photo-curable refractive index matching solution; and the curing reaction light is made incident again from the opposite end of the optical fiber so as to cure the preliminarily cured photo-curable refractive index matching solution and form a refractive index matching film.Type: ApplicationFiled: January 29, 2008Publication date: June 5, 2008Inventors: Yoshihisa KATO, Kanako Suzuki
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Patent number: 7377703Abstract: The present invention is directed to a connector assembly for connecting optical fibers in optical communication systems, and particularly to flexible ferrule device for connecting optical fibers for such use. The present invention further relates to a method of connecting optical fiber using such device and to a tool for the use thereof. The invention relates to an optical fiber connection device that allows for the end-to-end alignment of two optical fibers in a way such as to permit a light signal to pass from one fiber to the other fiber with minimal attenuation and reflection losses. This device also makes it possible to reduce any air layer between the ends of the two fibers in contact by maintaining pressure on their ends.Type: GrantFiled: October 21, 2004Date of Patent: May 27, 2008Assignee: 9134-9001 Quebec Inc.Inventor: Eric Weynant
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Patent number: 7379649Abstract: The present method and kit provide for effective and efficient patching of fiber optic cables. The kit comprises mechanical fiber optic splicers, a fiber optic patch, a splice housing, and a protective housing. The mechanical fiber optic splicers can be used to splice the fiber optic cable and the fiber optic patch. The mechanical fiber optic splicers, the fiber optic patch, and a portion of the fiber optic cable can be enclosed within the splice housing. The splice housing can then be enclosed within a protective housing.Type: GrantFiled: December 11, 2006Date of Patent: May 27, 2008Assignee: AT&T Knowledge Ventures, LPInventors: Glen Edward Gould, Andrew Matulica, Dennis Joseph Byrne
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Patent number: 7371019Abstract: Disclosed is an optical apparatus including an optical fiber having a wavelength of operation, the optical fiber comprising a first length of the optical fiber joined to a second length of the optical fiber with a splice such that the first and second lengths are in optical communication; a photodetector for sensing light leaking from the splice; and wherein the splice has a splice loss of not greater than 0.5 dB at the wavelength of operation. Methods of sensing light are also disclosed.Type: GrantFiled: December 13, 2005Date of Patent: May 13, 2008Assignee: NufernInventor: Martin Seifert
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Patent number: 7369738Abstract: An optical connector for terminating an optical fiber comprises a housing configured to mate with a receptacle and a collar body disposed in the housing. The collar body includes a fiber stub disposed in a first portion of the collar body, the fiber stub including a first optical fiber mounted in a ferrule and having a first end proximate to an end face of the ferrule and a second end. The collar body also includes a mechanical splice disposed in a second portion of the collar body, the mechanical splice configured to splice the second end of the fiber stub to a second optical fiber. The collar body also includes a buffer clamp configured within a third portion of the collar body, the buffer clamp configured to clamp at least a portion of a buffer cladding of the second fiber upon actuation. A fiber distribution unit is also provided.Type: GrantFiled: October 23, 2006Date of Patent: May 6, 2008Assignee: 3M Innovative Properties CompanyInventors: Donald K. Larson, Paul N. Winberg, Wesley A. Raider, Chansool Park, Wai-Fung Mak, James B. Carpenter, Frank J. Glatzl
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Patent number: 7364375Abstract: A method for splicing fiber optic cables to each other utilizes a splice tube of a glass material having a passage extending through it. A technician inserts ends of each optical fiber into the glass tube and abuts the ends of the fibers against each other. The technician applies a vacuum to the passage and heat to the glass tube. The heat softens the glass tube, and the reduced pressure in the passage draws the side walls of the glass tube tightly around the optical fiber ends.Type: GrantFiled: December 18, 2006Date of Patent: April 29, 2008Assignee: Lockheed Martin CorporationInventor: Richard C Jones
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Patent number: 7343077Abstract: The present invention features a system and method for securely holding a fiber optic drop cable splice in place and for creating a watertight splice by encapsulating two or more fiber optic cables having one or more spliced fiber optic strands in an enclosure with an encapsulant to create a permanent, watertight fiber-optic splicing system and method.Type: GrantFiled: April 4, 2006Date of Patent: March 11, 2008Assignee: Uraseal, Inc.Inventors: William H. Mann, John K. Burnham, Michael H. Bubak, Pamela K. LaRoche, Kevin D. Scott, Duston W. Shost, Joseph E. Bradley, James J. Decknick
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Patent number: 7333709Abstract: A splice holder device includes a tray mountable in a telecommunications closure, the tray including a splice mounting mechanism configured to receive a splice device. The splice holder device also includes first and second fiber clamps disposed on the tray, wherein the first and second fiber clamps are each configured to releasably secure a buffered portion of an optical fiber. The tray can include a single splice device, such as a mechanical splice, mounted therein or can include a plurality of splice devices mounted therein. The splice holder device can be configured to be securedly mounted in a telecommunications enclosure.Type: GrantFiled: September 8, 2005Date of Patent: February 19, 2008Assignee: 3M Innovative Properties CompanyInventors: James B. Carpenter, Douglas P. Hills, Chansool Park, Donald K. Larson, Paul N. Winberg
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Publication number: 20080037933Abstract: Illumination of objects in an optical inspection system may utilize an at least partially-coherent light source optically connected to a fiber optic bundle that is linked to a light guide comprising a single optical element. The combination of the bundle and element provides coherence-breaking effects and serves to smooth out angular and spatial non-uniformities. The end face of the light guide may be tapered such that the output end of the light guide is wider than the input end. The illumination system may be configured to illuminate an object such as a semiconductor wafer with critical, Kohler, or other illumination, and may further include a diffuser or other optical elements. The light guide and fiber bundle combination may be used alone or as part of a larger illumination system.Type: ApplicationFiled: August 14, 2006Publication date: February 14, 2008Inventors: Dov Furman, Daniel Mandelik
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Patent number: 7329049Abstract: A splice connector for verifying an acceptable splice termination includes a ferrule having a stub optical fiber, a ferrule holder for receiving the ferrule, opposed splice components within the ferrule holder for receiving and aligning the stub optical fiber and a field optical fiber, a cam member for engaging one of the splice components to terminate the field optical fiber, and means for viewing an amount of glow emanating from a termination area. In one embodiment, a splice component and the portion of the ferrule holder disposed between the splice component and the cam member are optically transmissive. The cam member has a first array of wells and a second array of wells for viewing the amount of glow before and after the field optical fiber is terminated. In another embodiment, the ferrule holder is opaque and has a view port, while the cam member has a first well having a first depth and a second well having a second depth.Type: GrantFiled: December 27, 2005Date of Patent: February 12, 2008Assignee: Corning Cable Systems LLCInventors: David W. Meek, Scott E. Semmler