Groove-type Holding Structure Patents (Class 385/65)
  • Patent number: 6402389
    Abstract: The present invention relates to an angled opto-mechanical connector (10) and to a manufacturing process for the same. The connector (10) comprises a fixture (1) with straight and parallel grooves (2, 3) of two sizes running on the upper side of the fixture (1) from a first fixture side (1a) to a second fixture side (1b). A lid (4) is fastened above the fixture (1). Fibre ends (8a) of optical fibres (8) are placed in the capillaries which are formed between the smaller grooves (2) of the fixture and the lid (4) in such a way that they stick out through the side of the fixture (1b). A plastic capsule (11) encloses the fixture (1), the lid (4) and the fibres (8) completely or partially. The fibres (8) stick out from the plastic capsule (11) in a direction separated from that defined by the grooves of the fixture. The connector (10) can also have an opto-mechanical interface of the above mentioned type at its other end (10b).
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: June 11, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Odd Steijer, Christer Moll, Bengt Lindström, Christian Vieider, Paul Eriksen, Jan-Åke Engstrand, Olle Larsson, Håkan Elderstig
  • Patent number: 6398424
    Abstract: A multi-channel optical connector that includes a multi channel optical fiber block including at least one optical fiber capable of being optically coupled to at least one optical device. The multi-channel optical fiber block is incorporated in a plastic molding that is complimentary in shape to that of an optical device array block, and thus can be plugged into the optical device array block. The close tolerances maintained in manufacturing of the connector results in accurate alignment of the fibers captured in the multi-channel optical fiber block with the optical devices in the optical device array block. The close tolerances can be achieved by using MEMS (Micro Electro Mechanical System) processing techniques to manufacture the V-grooves in a silicon V-block, which is part of the multi-channel optical fiber block. Alternatively, V-grooves can be produced in the multi-channel optical fiber block by plastic molding.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: June 4, 2002
    Assignee: PhotonAge, Inc.
    Inventors: Yong-Sung Jin, Hyung-Jae Lee, Yung-Sung Son
  • Patent number: 6396980
    Abstract: A multi-port fiber optic device (10) includes a dual fiber first collimator (12) which comprises a ferrule (18) with the input fiber (30) and the output fiber (32) therein, a gradient index rod lens (20) adhesively attached to the ferrule (18), and a filter (22) adhesively attached to the lens (20) opposite to the ferrule (18). A second collimator (14) is generally positioned in front of the first collimator (12), includes the similar components thereof while being symmetrical to the first collimator (12) along the middle portion of the whole assembly, except that one of the dual fiber of the second collimator (14) functions idle, thus the pigtail of such a fiber being removed.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: May 28, 2002
    Assignee: Alliance Fiber Optics Products, Inc.
    Inventors: Yuqiao Liu, Chianchiu Li, Gaofeng Chen, Peter C. Chang
  • Patent number: 6386766
    Abstract: A plug (10) is secured to an end of a first length of fiberoptic cable. A receptacle (14) is connected to an end of a second fiber topic cable. The receptacle component (14) includes a cylindrical sidewall (24) that includes an axial key slot (36). The plug (10) includes a shallow forward girth groove (50) that is immediately forwardly of a deeper rearward girth groove (52). A ring (32) is initially positioned with the deeper girth groove (52). A key (34) extends axially forwardly from ring (32). The ring (32) makes a loose fit in rearward girth groove (52) and a tight, interference fit with forward girth groove (50). Initially, with the ring (32) in the rearward girth groove (52), the plug (10) is moved into the socket (30) and the key (34) is started into key slot (36).
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: May 14, 2002
    Assignee: Fiberon Technologies, Inc.
    Inventor: Hsin Lee
  • Patent number: 6386767
    Abstract: A high density multiple chip fiber array connector having a ferrules located by alignment chips within the connector. The ferrules each contain an array of optical fibers and have grooves on opposing ends that cooperate with ridges formed on said alignment chips to locate the ferrules within the connector. Alignment pins are provide at opposing end of the alignment chips to position the connector with respect to a complementary connector when mated thereto. The connector is fabricated by bonding the ferrules, alignment chips and alignment pins together and then placing these components within a housing.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: May 14, 2002
    Assignee: FCI Americas Technology, Inc.
    Inventor: David Naghski
  • Patent number: 6379054
    Abstract: A multifiber connector is provided according to one embodiment which includes a multifiber ferrule, splice components and a crimp tube that defines a lengthwise extending passageway having a lateral cross-sectional shape that is generally oval for receiving and maintaining a plurality of optical fibers in a lateral side-by-side relationship. The crimp tube therefore provides the optical fibers to the splice components in an aligned and properly spaced manner for alignment and optical interconnection with respective optical fiber stubs. According to another embodiment, a fiber optic connector is provided that includes a ferrule, mechanical splice components, an associated cam member for actuating the mechanical splice components and means for controlling the position of the cam member relative to the mechanical splice components such that the cam member can be precisely moved from a first unactuated position to a second actuated position.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: April 30, 2002
    Assignee: Corning Cable Systems LLC
    Inventors: Rodney A. Throckmorton, Jeffrey D. Palmer, Mark W. Spriggle, Michael de Jong
  • Patent number: 6367985
    Abstract: A fiber optic connector having improved alignment and manufacturing characteristics over traditional connectors. A fiber optic connector of the present invention has a first connector ferrule and alignment means for aligning the first connector ferrule with a matching second connector ferrule. The fiber optic connector includes a first connector ferrule including a first mating surface. The mating surface defines at least one receiving cavity, and at least one protruding alignment rod is seated in the cavity and extends from the mating surface. The alignment rod has a diameter D1 and protruded from the mating surface a protrusion distance p1, wherein p1≦2D1. In an exemplary embodiment the rod has a spherical tip and 0.5D1≦p1≦2D1.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: April 9, 2002
    Assignee: Intellectual Property Company
    Inventors: Nicholas A. Lee, Scott A. Igl, Gordon D. Henson
  • Patent number: 6364539
    Abstract: A stackable multi-fiber ferrule of the present invention enables relatively tighter stacking between fiber arrays, resulting in increased interconnection density. The present invention achieves tighter stacking by incorporating an inner support member having alignment pin grooves on only one side, thereby permitting the thickness of the support member to be reduced. Thus, the thickness of the inner support member may be thinner than that of conventional support members because the inner support member of the present invention does not have to accommodate opposing alignment pin grooves on both sides thereof. Thus, a multi-fiber stackable ferrule in accordance with the present invention will have alignment pin holes on alternating rows of fibers, that is, on every other interface between adjacent support members. Accordingly, a stackable multi-fiber ferrule in accordance with the present invention is capable of improved interconnection density.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: April 2, 2002
    Assignee: Avaya Technology Corp.
    Inventor: Muhammed A. Shahid
  • Patent number: 6352372
    Abstract: A receptacle-like or plug-like optical connector has a body with a rear end and an end face that is opposite from and forward of the rear end. A longitudinal direction is defined between the rear end and the end face, and the end face extends generally perpendicular to the longitudinal direction. The end face has opposite first and second edges, and opposite third and fourth edges that extend between the first and second edges in a lateral direction. A plurality of arrays of optical terminuses are positioned at the end face and, and each array extends in the lateral direction across the end face. The optical connector includes one or more relatively large alignment members. A first alignment member is proximate to the third edge of the end face and extends in the longitudinal direction and a second alignment member is proximate to the fourth edge of the end face and extends in the longitudinal direction.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: March 5, 2002
    Assignee: Lucent Technologies Inc.
    Inventor: Muhammed Afzal Shahid
  • Publication number: 20020025104
    Abstract: A first waveguide holding member has a principal surface which confronts the principal surface of a second waveguide holding member. Each principal surface has a stepped configuration defined by an upper surface region, a lower surface region and a transverse region which separates the upper and lower surface regions. At least guide member guides the first and second waveguide holding members to operatively couple and decouple opposing ends of first and second optical waveguides which terminate at the transverse regions of the first and second waveguide holding members, respectively.
    Type: Application
    Filed: May 2, 2001
    Publication date: February 28, 2002
    Inventors: Dan A. Steinberg, David W. Sherrer
  • Patent number: 6350062
    Abstract: A multifiber ferrule is provided that includes a ferrule body that defines at least one elongate hole opening through the front face of the ferrule body that, in turn, includes a lead-in portion proximate the front face for guiding the respective alignment member into the elongate hole. The ferrule body at least partially defines one or more elongate holes, such as a guide pin hole or an alignment groove, each having a longitudinal axis extending therethrough. Each elongate hole includes the lead-in portion proximate the front face and an adjacent alignment portion. The lead-in portion expands radially outward from the longitudinal axis in a direction extending from the adjacent alignment portion to the front face of the ferrule body. As such, the opening of the lead-in portion through the front face of the ferrule body is larger in lateral cross-section than the opening of the lead-in portion into the adjacent alignment portion.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: February 26, 2002
    Assignee: Corning Cable Systems LLC
    Inventors: Dennis M. Knecht, Joel C. Rosson, Markus A. Giebel, James P. Luther, Karl M. Wagner, David L. Dean, Jr.
  • Publication number: 20020003932
    Abstract: MT ferrule. A polymer fiber optic MT ferrule includes hermaphroditic L-shaped halves having multiple fibers mounted in V-grooves formed within surfaces of ferrule halves. Ferrule halves include holed walls perpendicular to the major surface of the V-grooves for providing alignment of the ferrule to guide pins of an MT receptacle having an alignment assembly and an alignment member mounted within the alignment assembly to provide for precision alignment.
    Type: Application
    Filed: February 12, 2001
    Publication date: January 10, 2002
    Inventors: Philip W. Schofield, Anastasia Bardouniotis
  • Patent number: 6328479
    Abstract: MT ferrule. A polymer fiber optic MT ferrule includes hermaphroditic L-shaped halves having multiple fibers mounted in V-grooves formed within surfaces of ferrule halves. Ferrule halves include holed walls perpendicular to the major surface of the V-grooves for providing alignment of the ferrule to guide pins of an MT receptacle having an alignment assembly and an alignment member mounted within the alignment assembly to provide for precision alignment.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: December 11, 2001
    Assignee: Stratos Lightwave, Inc.
    Inventors: Philip W. Schofield, Anastasia Bardouniotis
  • Patent number: 6328481
    Abstract: An arrayed optical fiber connector for positioning multiple optical fibers to align the end faces of the optical fibers with multiple optical axes at a given input/output face of light is constructed as a board that includes a groove in which the multiple optical fibers are disposed in a given alignment arrangement; a fixing member that is received in the groove and is laid with the multiple optical fibers in a given alignment arrangement; and a fixing plate that is fixed on the surface of the board in which the groove is formed and fixes the multiple optical fibers and the fixing members inside the groove while securing the given alignment arrangement of the multiple optical fibers and the fixing members.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: December 11, 2001
    Assignee: NEC Corporation
    Inventor: Kenichi Nakaya
  • Patent number: 6317964
    Abstract: A method and arrangement for aligning a waveguide connector to at least one optical device is set forth. The arrangement includes a waveguide connector and a substrate carrying at least one waveguide. The waveguide connector having both guide legs and aligning elements. The method includes the step of shaking the arrangement at a frequency and amplitude sufficient to cause opposing aligning elements disposed on the waveguide connector and on the substrate to engage each other.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: November 20, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mats Robertsson, Paul Eriksen, Kristian Engberg, Peter Lo Curizo
  • Patent number: 6315462
    Abstract: A fiber Optic circuit switch comprises elements constructed entirely from a coating layer on a substrate. A procedure for production of the fiber optic circuit switch is disclosed.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: November 13, 2001
    Assignee: Ascom AG
    Inventors: Olivier Anthamatten, Cornel Marxer
  • Patent number: 6299361
    Abstract: The invention has an object to provide a method of making an optical fiber array in which bare fibers obtained by removing a coating of an optical fiber ribbon can be certainly arrayed on a V-groove substrate. A first feature of the invention is to use a positioning guide, and the positioning guide is provided with a recess portion having inclined wall surfaces, and its bottom portion is made to have a width equal to the whole width of the bare fibers in an arrayed state. By using this positioning guide, the optical fiber array can be made in a process as follows. In a state where bare fibers exposed by removing part of coating of tip portions of two fiber ribbons are alternately arranged, the positioning guide is raised from below. The bare fibers with irregular gaps are moved by the positioning guide and are arranged. In this state, the bare fibers are pressed by a fiber pressing member from above, and the V-groove substrate is raised, so that they are put on V grooves and are fixed by an adhesive.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: October 9, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Sasaki, Teruaki Nishida, Hidetoshi Ishida, Dai Yui, Kei Sunaga
  • Patent number: 6293708
    Abstract: An optical connector includes a first ferrule which holds the ends of a first optical fiber unit including at least one optical fiber, and a housing. The housing is a U-shaped member with parallel arms extending in the lengthwise direction of the first optical fiber unit. The housing surrounds one of the widthwise sides of the first ferrule from which the first optical fiber unit is derived and the lengthwise sides of the first ferrule, whereby the housing accommodates the first ferrule. The housing receives a second ferrule which holds the ends of a second optical fiber unit including at least one optical fiber through the U-shaped opening. The housing surrounds the lengthwise side of the second ferrule and a part of the side of the second ferrule from which the second optical fiber unit is derived, whereby the first and second ferrules are coupled together.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: September 25, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kenichiro Ohtsuka, Tomohiko Ueda, Toshiaki Kakii
  • Patent number: 6276840
    Abstract: A massive parallel (MP) connector is provided which includes a fiber optic connector having a polymer female having multiple fibers mounted in V-grooves of the ferrule and beveled edges of the ferrule providing for alignment of the ferrule when the MP fiber optic connector is mated to a receptacle having an alignment assembly and an alignment member mounted within the alignment assembly to provide for precision alignment. A receptacle assembly is provided having a first receptacle half for receiving a fiber optic connector having a first form factor and a second receptacle half for receiving a fiber optic connector having a second form factor.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: August 21, 2001
    Assignee: Stratos Lightwave, Inc.
    Inventors: Roger E. Weiss, Daniel P. Vladic, Philip W. Schofield
  • Patent number: 6275642
    Abstract: The invention relates to a device for accurately positioning the ends of optical fibers in a bundle. The comprises an elongate one-piece solid body in which a slot is formed that passes right through the body in a length direction, the section of said slot in planes perpendicular to the length direction being a closed curve having a first side and a second side that extend substantially parallel to each other, at least one of said sides being of undulating shape, being constituted by alternating peaks and troughs, the space defined by a trough and the facing portion of the other side being suitable for receiving an optical fiber with little clearance, the spaces corresponding to peaks being unsuitable for receiving respective fibers.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: August 14, 2001
    Assignee: Amphenol Socapex
    Inventors: Philippe Pouyez, Stéphane Doit, Pierre Kayoun
  • Patent number: 6254280
    Abstract: An optical fiber cable connector assembly comprising two connectors each of which is comprised of a rigid inorganic body which is coated with an organic layer into which grooves are formed which are adapted to restrain the ends of two fiber optic cables. One connector is adapted to fit over the other when inverted to form the assembly with one or more fiber optic cables restrained between them.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: July 3, 2001
    Assignee: Agere Systems Optoelectronics Guardian Corp.
    Inventors: Philip Hubbauer, Louis Thomas Manzione
  • Patent number: 6247850
    Abstract: A fiber optic splice assembly comprising: (a) a fiber-receiving element having opposite faces, first and second ends, and first and second sides, each the face having at least one elongate fiber channel and an elongate bearing channel, (b) two clamping elements, each the clamping element having a clamping face and an opposite spring face, first and second sides, the clamping elements covering at least a portion of each elongate fiber and bearing channel, and (c) a splice spring for imparting opposing normal forces on the spring faces of the clamping elements and along the first side of the fiber-receiving element, the spring permitting independent resilient disengagement of each the clamping faces from the fiber-receiving element face.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: June 19, 2001
    Assignee: The Whitaker Corporation
    Inventors: Bryan Edwards, Kenneth Hall, Robert Briggs, Shelly Buchter, Craig Kegerise
  • Patent number: 6246812
    Abstract: A V-groove dual fiber collimator (1) including an optical lens (10) and a V-groove dual fiber ferrule means (12) fixed with each other. The ferrule means (12) includes a V-groove chip (14) and a cover chip (20) commonly enclosed by a protective guiding sleeve (22) wherein two pigtail fibers (24, 26) are respectively received within the corresponding grooves (16) of the V-groove chip (14). The V-groove ferrule means (12) is itself fixed by adhering its own internal components (14, 20, 22) and the embedded fibers (24, 26), and also fixed to the lens (10).
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Alliance Fiber Optics Products, Inc.
    Inventors: Yuqiao Liu, Peter C. Chang
  • Patent number: 6240235
    Abstract: The optical fiber fixing member made of glass, especially optical fiber guide block, is conventionally produced by a mechanical processing. However, the mechanical processing has problems that a production cost becomes high and mass-production is difficult. The problems above can be solved by the present invention providing a method for producing an optical fiber fixing member comprising: disposing a glass shaping preform whose plane view resembles to the plane view of the molded article and whose faces to be positioned in the pressurizing direction during press-molding assumes planes or outwardly convex curved surfaces, in a mold having a cavity of a given shape; and heating the glass shaping preform up to a temperature at which the glass shaping preform can be mold-shaping and thereby press-molding it into a molded article having at least one edge formed of a free surface.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: May 29, 2001
    Assignees: Hoya Corporation, Hoya Precision Inc.
    Inventors: Ken Uno, Masahiro Yoshida, Teruo Yamashita, Shinichiro Hirota, Yoshiatsu Yokoo
  • Patent number: 6234681
    Abstract: Embodiments of the invention include an optical fiber connector that supports a linear array or ribbon array of optical fibers. The connector includes a pair of intermatable housing members that, when mated, define a connector having a front end suitable for butt coupling to other connectors or compatible connections, a back end for terminating an array of optical fibers, and a plurality of waveguides or optical fiber support grooves extending from the front end to the back end. According to embodiments of the invention, the back end has at least one feature that increases the opening formed by the housing members at the back end of the connector, thus making it easier to terminate an optical fiber or array of optical fibers therein that optically couples to the waveguide or optical fibers terminated in the front end. For example, one or both housing members include a beveled or curvelinear portion, both of which increase the opening between the housing members at the back end of the connector.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: May 22, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: Muhammed Afzal Shahid
  • Patent number: 6231243
    Abstract: A preform used for producing an optical fiber fixing member having an optical fiber fixing part and a lower-staged part by a mold shaping method, is formed so as to be composed of a large-thickness portion having an upper surface or a peak portion to which that transfer-shaping surface of transfer-shaping surfaces of a shaping mold which is to shape the said optical fiber fitting portion(s) comes into contact at an initial stage of mold shaping, and a small-thickness portion having an upper surface or a peak portion to which that transfer-shaping surface of transfer-shaping surfaces of the shaping mold which is to shape the upper surface of the lower-staged part comes into contact at an initial stage of the mold shaping, the preform being formed in a configuration in which the said small-thickness portion is adjacent to the large-thickness portion, the form of the preform viewed as a plan view parallels with the form of the said optical fiber fixing member viewed as a plan view and the form of the preform vie
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: May 15, 2001
    Assignee: Hoya Corporation
    Inventors: Lihong Zhang, Masahiro Yoshida, You Ohgami, Teruo Yamashita, Yoshiatsu Yokoo
  • Patent number: 6219484
    Abstract: A metal coated optical fiber array module including a metal coated optical fiber array, an arranging substrate having arranging grooves for loading the optical fiber array, wherein a metal is coated on the upper surface including the arranging grooves and the optical fiber array loaded into the arranging grooves is united therewith through the medium of the metal, and a cover for protecting and fixing the optical fiber array loaded into the arranging grooves of the arranging substrate. It is preferable that the optical fiber array module further includes a planar substrate having holes into which the optical fiber array is to be inserted, wherein the optical fiber array loaded on the arranging substrate is inserted into the holes and united with the arranging substrate. After the optical fibers are loaded, the ends thereof are easily polished.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: April 17, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Täe-hyung Rhee, Hyung-jae Lee, Byong-gwon You
  • Patent number: 6219479
    Abstract: An optical star assembly having a ribbon fiber optic mixing element with the first and second ends. A first and second bundle of fiber optic cables are provided each with an engagement end for connection with a respective end of the ribbon fiber optic mixing element. The ribbon fiber optic mixing element and a portion of the fiber optic cables are carried in the housing so that the housing biases each end of the ribbon fiber optic mixing element towards an engagement end of the first and second bundles of fiber optic cables respectively. The fiber optic cables may be connected to a plurality of optical receivers so that the ribbon fiber optic mixing element distributes optical information from each of the fibers to all of the optical receivers in the assembly.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: April 17, 2001
    Assignee: Delphi Technologies, Inc.
    Inventors: William T. Madden, Anthony Joseph Corso, Edward M. Bungo, Paul Gerhard Halbach
  • Patent number: 6200040
    Abstract: A pin keeper for use in a transition between a multiple fiber ferrule holding at least two fibers and having a fiber to fiber spacing substantially equal to a first lateral dimension and a fiber optic body having a fiber to fiber spacing substantially equal to a second lateral dimension which is different from said first lateral dimension. The pin keeper is disposed between the ferrule and the fiber optic body. The fibers pass through the pin keeper, which splays the fibers from the first lateral dimension to the second lateral dimension.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: March 13, 2001
    Assignee: Tyco Electronics
    Inventors: Bryan Thomas Edwards, Rodney Gallagher, Shelly Ann Buchter, Robert Carl Briggs, David Donald Erdman
  • Patent number: 6193421
    Abstract: A short optical fiber 2 is incorporated in a ferrule 1 having a polished front end, so as to be projected from the rear end of the ferrule. In a base member 3 in which the short optical fiber is to be fitted into a hole 3b, a V-groove 3d to which the glass portion of an optical fiber is to be fixed, and a V-groove 3e to which the coated portion is to be fixed are formed. A cover member 4 is placed on the base member. The base member 3 and the cover member 4 are clamped by clamp members 5a and 5b and the base member 3 presses to V-grooves. Wedges which are not shown are pressingly inserted between recessed 3g and 4c, and 3h and 4d, and an optical fiber 10 is inserted from the rear portion. Thereafter, the wedges are detached and the optical connector is attached to the terminal of the optical fiber 10.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: February 27, 2001
    Assignees: Sumitomo Electric Industries, Ltd, Nippon Telegraph and Telephone Corporation
    Inventors: Yoshikyo Tamekuni, Tomohiko Ueda, Kazuo Hogari, Shin-ichi Furukawa
  • Patent number: 6195495
    Abstract: An optical transmitting member-holding structure for holding an optical transmitting member at a given location, said holding structure comprising a holding substrate, an optical transmitting member placed on the holding substrate, a fixing substrate covering the optical transmitting member on the holding substrate, and a joining layer joining the holding substrate and the fixing substrate and fixing the optical transmitting member at said given location, said joining layer comprising an eutectic solder layer.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: February 27, 2001
    Assignee: NGK Insulators, Ltd.
    Inventors: Takashi Ota, Masashi Fukuyama, Hironori Kurimoto
  • Patent number: 6190054
    Abstract: An optical fiber device 10 characterized in comprising a support mechanism 11 that supports an optical fiber connector 1 having components 2 with a two piece structure disposed one over the other and held against each other by a tension means, and at one end or the other end of which one or the other optical fibers 3,3 is inserted between said components, determining the alignment position so as to be able to connect optical fibers end to end, a separation member 20 releasing said optical fibers by spreading in the direction of separation of said components by opposing the tension of said tension means when inserted into said components from a direction straight along the longitudinal direction of said optical connector, and a push pressure device 30 which inserts said separation member between said components by applying pushing pressure in the direction of the optical connector to said seperator, and while applying end to end force to both optical fibers end to end in the component, closes the component, an
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: February 20, 2001
    Assignee: Fujikura Ltd.
    Inventors: Yasuhiro Tamaki, Toshiyuki Tanaka, Akito Nishimura, Yuichi Yoshida, Hiroshi Yokosuka
  • Patent number: 6185348
    Abstract: The present invention is an apparatus and method for assembling a multifiber interconnection circuit where the circuit includes at least one elongated member disposed between a first cover member and a second cover member. The apparatus includes a template, a receiving member, and a transfer member. The template has a first end and a second end and a means for routing an elongated member, such as an optical fiber, from the first end of the template to the second end of the template. The receiving member is arranged and configured to receive the optical fiber engaged by the template. The transfer member is configured to support the receiving member for reception of the optical fiber. In a preferred embodiment of the invention, an alignment guide aligns and orients the template with the transfer member.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: February 6, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: Muhammed Afzal Shahid
  • Patent number: 6173098
    Abstract: The present invention relates to a manufacturing method for an opto-mechanical connector (10) and to the connector itself. The invention includes that a fixture (1) is manufactured with straight and parallel grooves (2,3) running on the upper side of the fixture (1) from a first fixture side (1a) to a second fixture side (1b), and which grooves (2,3) are intended partly for optical fibers and partly for guide pins. A lid (4) is attached above the fixture (1), whereafter optical fibers (8) from, for example, a fiber ribbon cable (6) are introduced into the grooves (2) intended for the fibers from the first fixture side (1a) so that the fiber ends (8) extend out through the second fixture side (1b). Guide pins (9) are furthermore introduced into the grooves (3) intended for the guide pins. The structure obtained (fixture (1), lid (4), fiber ends (8) and guide pins (9)) is completely or partially enclosed by a plastic capsule (11).
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: January 9, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Odd Steijer, Christer Moll, Bengt Lindström, Christian Vieider, Paul Eriksen, Jan-Åke Engstrand, Olle Larsson, Håkan Elderstig
  • Patent number: 6160947
    Abstract: An optical transmission member-fixed assembly including a substrate with a receipt groove in which a core wire of an optical transmission member is received, a lid integrated with the substrate, while between the substrate and the lid is provided a receipt space in which at least a covering of the optical transmission member is received, a dimension of the receipt space being greater than that of the receipt groove when viewed in a width direction, wherein an adhesive is filled around the core wire inside the receipt groove for fixing the core wire there, an adhesive is filled around the optical transmission member within the receipt space for fixing the optical transmission member there, a thickness of the adhesive filled around the optical transmission member inside a boundary space zone between the receipt space and the receipt groove is continuously reduced as a location of the boundary space zone is at least near and goes to an opening of the receipt groove at an end opposed to the receipt space.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: December 12, 2000
    Assignee: NCK Insulators, Ltd.
    Inventors: Yukihisa Osugi, Akira Hamajima, Shuhei Toyoda, Yoshinari Kozuka, Yoshizumi Nakasuji
  • Patent number: 6151430
    Abstract: A process is provided for creating microstructure coupling guides for aligning photonic devices with optical signal carrying apparatuses. The process includes applying a photoresist to a semiconductor material, spinning the semiconductor material, baking the semiconductor material, exposing the photoresist, baking the semiconductor material a second time, and developing the resist. The process creates a microstructure that acts as an integral guide to align and maintain the relative position between an optical signal carrying apparatus and a photonic device.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 21, 2000
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Robert F. Traver, Jr., Theodore D. Lowes, Mark N. Donhowe, Sean P. Kilcoyne
  • Patent number: 6132105
    Abstract: A multi-core-fiber optical connector includes a first ferrule and a second ferrule. The first ferrule has a first step defining a first upper surface and a first lower surface. The first upper surface has a plurality of first receiving grooves for receiving the vicinities of leading end portions of optical fibers and engaging portions formed on opposite sides of the first upper surface. The second ferrule has a second step being abuttable against the first step, and defining a second lower surface opposite to the first upper surface and a second upper surface opposite to the first lower surface. The second lower surface has a plurality of second receiving grooves receiving the leading end portions of the optical fibers. The second upper surface has engaged portions engageable with said engaging portions, and is formed with a recess receiving a band-like elastic cushioning member therein.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: October 17, 2000
    Assignee: Suncall Corporation
    Inventors: Hideya Konda, Kazuki Sogabe, Shoji Sugino
  • Patent number: 6132106
    Abstract: An optical coupling module includes first, second, and third substrates, first and second optical fibers, and first and second lenses. The first substrate has a surface formed with a first V-groove. The second substrate has a surface formed with a second V-groove. The third substrate is arranged between the first and second substrates and has a surface formed with first and second recess. The first to third substrates have the surfaces flush with each other. The first and second optical fibers are fixed in the first and second grooves, respectively, and are arranged such that their end faces oppose each other. The first and second lenses are fixed in the first and second recesses, respectively, and are arranged on one optical axis of the first and second optical fibers to be spaced apart from each other by a predetermined distance.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: October 17, 2000
    Assignee: NEC Corporation
    Inventor: Jun Yokoyama
  • Patent number: 6134371
    Abstract: An optical fiber fixing member 11 including an optical fiber engaging portion 15 for positioning/engaging an optical fiber F. The optical fiber engaging portion 15 is provided with two inclined faces 12, for supporting a side wall of the optical fiber when the optical fiber F is engaged in the optical fiber engaging portion 15, and a bottom face 13 positioned between the inclined faces 12. The bottom face 13 is flat. Additionally, in a sectional face perpendicular to an optical axis of the optical fiber F supported by the inclined faces 12, in a boundary portion in which the bottom face 13 and the inclined faces 12 are connected, inclinations of the bottom face 13 and the inclined faces 12 are discontinuous. Therefore, when the optical fiber engaging portion 15 is observed while a light is radiated to the bottom face 13 from above or from below, the contrast between the bottom face 13 and the inclined face 12 by a reflected light or a transmitted light is enhanced.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: October 17, 2000
    Assignee: Hoya Corporation
    Inventors: Masahiro Yoshida, Teruo Yamashita
  • Patent number: 6103344
    Abstract: A heat-fused unitary ferrule includes a first glass substrate and a second glass substrate. The first glass substrate and the second glass substrate are unitarily joined by heat-fusion. A method for producing a heat-fused unitary ferrule includes the steps of: bringing a surface to be heat-fused of the first glass substrate having a groove for fixing an optical fiber into contact with a surface to be heat-fused of the second glass substrate; and subjecting the first and second glass substrates to heat-fusion at a temperature ranging from (Tg1-100).degree. C. to (Tg2+150).degree. C. (Tg1 denotes the higher glass transition temperature, and Tg2 denotes the lower glass transition temperature of the first and second glass substrates).
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: August 15, 2000
    Assignees: NGK Insulators, Ltd, NGK Optoceramics Co., Ltd
    Inventors: Takashi Ota, Masashi Fukuyama, Hitoshi Hasegawa, Kazutoshi Tohyama
  • Patent number: 6100595
    Abstract: A semiconductor device includes a chip forming an integrated circuit; a connection substrate; an internal coupling mechanism; and at least one optical communication system. The connection substrate comprises an external coupling mechanism for electrically coupling to a device other than the chip. The internal coupling mechanism electrically couples the integrated circuit to the external coupling mechanism. The at least one optical communication system comprises two optoelectronic parts. The first optoelectronic part is either an emitter or a receiver which is integrated into the chip and constitutes one component of the integrated circuit. The second optoelectronic part is borne by the connection substrate and is able to be externally connected to the connection substrate. The second optoelectronic part faces the first optoelectronic part and is capable of exchanging light signals with the first optoelectronic part.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: August 8, 2000
    Assignee: STMicroelectronics S.A.
    Inventors: Herve Jaouen, Michel Marty
  • Patent number: 6095695
    Abstract: An optical connector includes a first ferrule which holds the ends of a first optical fiber unit including at least one optical fiber, and a housing. The housing is a U-shaped member with parallel arms extending in the lengthwise direction of the first optical fiber unit. The housing surrounds one of the widthwise sides of the first ferrule from which the first optical fiber unit is derived and the lengthwise sides of the first ferrule, whereby the housing accommodates the first ferrule. The housing receives a second ferrule which holds the ends of a second optical fiber unit including at least one optical fiber through the U-shaped opening. The housing surrounds the lengthwise side of the second ferrule and a part of the side of the second ferrule from which the second optical fiber unit is derived, whereby the first and second ferrules are coupled together.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 1, 2000
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kenichiro Ohtsuka, Tomohiko Ueda, Toshiaki Kakii
  • Patent number: 6091875
    Abstract: A optical fiber ribbon midspan splitter tool for quick and easy midspan splitting of an optical fiber ribbon into separate ribbon sub-groups for mass splicing. The device comprises a pair of splitter tool sections each having a base and a lid and defining a slot through the splitter tool. The pair of elongate tool sections are rotatably mounted about a transverse hinge through both sections adjacent one end of the tool. The pair of lids are each mounted to a respective one of a pair of bases so as to open upwardly and outwardly for placement of an optical fiber ribbon in the slot defined within the two adjacent bases of the splitter tool. Magnets are provided at the juncture of the splitter tool sections for maintaining the splitter tool sections in releasable alignment, and a pair of magnets are provided in each splitter tool section at the juncture of the base and the lid for releasably maintaining the base and lid in abutting enclosed relationship.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: July 18, 2000
    Assignee: Sumitomo Electric Ligthwave Corp.
    Inventors: Ronald G. Lindsay, Jr., John P. Sarbell
  • Patent number: 6045269
    Abstract: The invention relates to a small-sized multiple-core optical connector having high reliability, which can be easily assembled and manufactured. A plurality of array guide grooves (22) are arrayed and formed on a flat substrate (21). The array pitch interval of the array guide grooves is roughly coincident with the outer diameter of bare optical fibers (4a), (4b). The first optical fiber tape (6a) and the second optical fiber tape (6b) are disposed at the rear end side of the flat substrate (21) so as to overlap each other, wherein the first bare optical fibers (4a) of the first optical fiber tape (6a) and the second bare optical fibers (4b) of the second optical fiber tape (6b) are alternately array-converted and accommodated in the array guide grooves (22). The bare optical fibers (4a), (4b) are pressed from the upside of the bare optical fibers (4a),(4b) at the tip end side of the array, and they are placed and fixed in the array guide grooves.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: April 4, 2000
    Assignees: The Furukawa Electric Co., Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Tomohiro Watanabe, Kazunori Watanabe, Tsunetoshi Saito, Etsuzo Sato, Toshihiko Ota, Nobuo Tomita
  • Patent number: 6045270
    Abstract: A massive parallel (MP) connector is provided which includes a fiber optic connector having a polymer ferrule having multiple fibers mounted in V-grooves of the ferrule and beveled edges of the ferrule providing for alignment of the ferrule when the MP fiber optic connector is mated to a receptacle having an alignment assembly and an alignment member mounted within the alignment assembly to provide for precision alignment. A receptacle assembly is provided having a first receptacle half for receiving a fiber optic connector having a first form factor and a second receptacle half for receiving a fiber optic connector having a second form factor.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: April 4, 2000
    Assignee: Methode Electronics, Inc.
    Inventors: Roger E. Weiss, Daniel P. Vladic, Philip W. Schofield
  • Patent number: 6033124
    Abstract: The device comprises a central spicing body serving to connect in situ two cable end plugs which fit into the splicing body. The central body has lower rails hollowed out therein and bears lateral shoulders for guiding and locking the end plugs constituted by a lower part and by an upper part fixed to one another by a press fit. The device has application in the in situ splicing of optical fibers.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: March 7, 2000
    Assignee: Cables Pirelli
    Inventors: Philippe Lesueur, Bruno Leguen, Christian Liegeois, Philippe Egon
  • Patent number: 5993070
    Abstract: A short optical fiber 2 is incorporated in a ferrule 1 having a polished front end, so as to be projected from the rear end of the ferrule. In a base member 3 in which the short optical fiber is to be fitted into a hole 3b, a V-groove 3d to which the glass portion of an optical fiber is to be fixed, and a V-groove 3e to which the coated portion is to be fixed are formed. A cover member 4 is placed on the base member. The base member 3 and the cover member 4 are clamped by clamp members 5a and 5b and the base member 3 presses the V-grooves. Wedges which are not shown are pressingly inserted between recesses 3g and 4c, and 3h and 4d, and an optical fiber 10 is inserted from the rear portion. Thereafter, the wedges are detached and the optical connector is attached to the terminal of the optical fiber 10.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: November 30, 1999
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Yoshikyo Tamekuni, Tomohiko Ueda, Kazuo Hogari, Shin-ichi Furukawa
  • Patent number: 5985086
    Abstract: To minimise the risk of adhesive resin (20, 21) securing an optical fibre (11) in a silicon V-groove (13, 14) from filling the space under the fibre, which can lead to delamination effects resulting from thermal expansion mismatch, a controlled amount of the resin is dispensed into each of two reservoirs (31) located on either side of the groove from which the resin flows into the groove along feeder channels (32) linking the reservoirs to the groove.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: November 16, 1999
    Assignee: Northern Telecom Limited
    Inventor: Robert George Peall
  • Patent number: 5963699
    Abstract: Productivity of switching optical connections is improved significantly with the mechanical splice presented. A single fiber cable or a fiber tape, with the bare fiber exposed at the tip, is inserted from the terminal ends of an aligner element, and are clamped between a lid and a base member of the aligner element, A U-shaped spring clamp is coupled to the aligner element to secure the cables clamped in the aligner element. After the aligner element is closed and coupled into the spring clamp, wedge insertion openings provided in the front face of the aligner element enable to lift the lid member from the base member sufficiently to enable removal of one or both of the cables. The mechanical splice is constructed simply and ruggedly so that cables can be connected or disconnected manually by coupling the aligner element into or decoupling from the spring clamp.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: October 5, 1999
    Assignees: Fujikura Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Toshiyuki Tanaka, Yasuhiro Tamaki, Hiroshi Yokosuka, Shinji Nagasawa, Mitsuru Kihara
  • Patent number: 5940553
    Abstract: An optical switch of the present invention comprises an optical fiber arranging member in which tip ends of a plurality of first optical fibers are juxtaposed, a movable arm facing the optical fiber arranging member and fixing a tip end of a second optical fiber, and a drive mechanism for driving at least one of the optical fiber arranging member and the movable arm, for switching of optical connection, in an arrangement direction of the first optical fibers and in a direction perpendicular to the arrangement direction of the first optical fibers to optically couple the second optical fiber with the first optical fiber, wherein the optical fiber arranging member and the movable arm are encased in a sealing case and wherein an antireflection agent is filled in the sealing case.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: August 17, 1999
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Murakami, Tsutomu Watanabe, Kazumasa Ozawa, Hisao Maki, Kazuhito Saito, Nobuo Tomita