Fiber/ferrule Further Processed (grinding, Polishing, Etc.) Patents (Class 385/85)
  • Patent number: 6854898
    Abstract: An object of the present invention is to provide an optical connector capable of preventing impairment of PC connections by a hard sleeve during PC connection of optical connectors having a hard sleeve installed in engaging pin holes thereof. The optical connector has a ferrule formed with integrally molded plastic and having engaging pin holes, and a hard sleeve installed in the engaging pin holes and having a hardness that is higher than the plastic of the ferrule. The hard sleeve and the plastic of the ferrule surrounding this hard sleeve are polished so as to be lower than the coupling end surface, and the end of the hard sleeve does not protrude beyond the coupling end surface.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: February 15, 2005
    Assignee: Fujikura, Ltd.
    Inventors: Nozomu Natori, Tetsuo Nozawa
  • Patent number: 6836602
    Abstract: Methods of bonding optical components are disclosed. Bonding is achieved without use of adhesives or high temperature fusion. The invention is useful for bonding optical fibers together and for bonding optical fiber arrays to lens arrays.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: December 28, 2004
    Assignee: Corning Incorporated
    Inventors: John F. Filhaber, Clarence E. Ford, Jr., Robert Sabia, Jackson P. Trentelman
  • Publication number: 20040252950
    Abstract: A simple, effective and inexpensive method produces an optical connection on an optical component. A waveguide section, a sleeve for enclosing the waveguide section and an optical component, which has a receptacle for the waveguide section and the sleeve, are provided. The waveguide section is inserted with the first end face into the receptacle of the component and is only cut to length after insertion, while it is mounted on the component. The front end face of the waveguide section is milled away in a centered, spherical concave form.
    Type: Application
    Filed: April 28, 2004
    Publication date: December 16, 2004
    Applicant: Molex Incorporated
    Inventors: Otto Schempp, Mathias Gerner
  • Patent number: 6821025
    Abstract: A cleaning apparatus (100) for cleaning an endface (202) of an optical fiber contained within an interface device (200) is provided. The cleaning apparatus includes a housing (110) having an interface portion (116) adapted to be received by the interface device. The cleaning apparatus also includes at least a first nozzle (126) operable to deliver a pressurized gas and a solvent upon the endface to aid in the removal of contaminants on the endface. A method for cleaning an endface of an optical fiber contained within an interface device is also provided. The method comprises the steps of inserting an interface portion within the interface device so as to position a nozzle in proximity to the endface of the interface device. The method further comprises the steps of directing a pressurized gas through the nozzle toward the endface and intermixing a solvent with the pressurized gas.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: November 23, 2004
    Assignee: Westover Scientific, Inc.
    Inventor: Gregory J. Gerhard
  • Patent number: 6808314
    Abstract: The center of a turntable 30 moves around the central axial line of an autoroation disk 20 along the circular orbit C of a smaller diameter than that of an autorotation disk 20. Thus, the turntable 30 revolves both around a center point O and on its own axis in accordance with an autorotation of the autorotation disk 20. A polishing holder 60 holds a connector of an optical fiber polished by a polishing film 41 arranged on the upper plane of the turntable 30. An optical fiber end face polishing machine provided with a memory 85 for storing a control program which allows a control device 80 to execute predetermined polishing steps, the control device 80 being for controlling an autorotation motor 16 of the turntable 30 and a revolution motor 14 thereof.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: October 26, 2004
    Assignee: Seikoh Giken Co. Ltd.
    Inventors: Kunio Yamada, Takehiko Narita, Yoshitaka Kimura, Yuichi Arai
  • Patent number: 6786650
    Abstract: The method and apparatus of the present invention is capable of precisely determining the orientation of the axis of the guide pin hole defined by a multifiber ferrule. Since the axis of the guide pin hole has a direct relationship to the alignment of the optical fibers, the method and apparatus can also precisely determine the end face angle of the ferrule based upon the axis of the guide pin hole without reference to external features of the ferrule. A measurement pin is initially positioned in a guide pin hole such that a first end of the measurement pin is disposed proximate the end face of the ferrule. The reference plane defined by the first end of the measurement pin is then measured, such as by an interferometer. Based upon the reference plane and the predetermined angle between the reference plane and the axis of the guide pin hole, the method and apparatus can precisely determine the orientation of the axis of the guide pin hole.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: September 7, 2004
    Assignee: Corning Cable Systems LLC
    Inventors: David L. Dean, Jr., Darrell R. Childers, James P. Luther, Terry L. Cooke
  • Patent number: 6779928
    Abstract: A ferrule with optical fiber is held to a ferrule holder. The ferrule is made of a material with 0.5˜2 times the wearing speed characteristic in comparison with a quartz glass. The ferrule holder comprises a polishing plate which has an elastic module equivalent to 70˜95 degrees of rubber hardness in a state of adhering a polishing sheet thereon. The ferrule holder is made to be self-supported on a polishing table in a manner such that the end face of the ferrule with optical fiber is in contact with the polishing sheet. The ferrule holder is made to manually move on the polishing table by a predetermined distance in the horizontal direction to slide the end face of the ferrule with optical fiber on the polishing sheet, thereby the end face of the ferrule with optical fiber is polished to a spherical convex surface centered on the optical fiber.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: August 24, 2004
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Masanori Wada, Hirokazu Takeuchi, Azusa Tanaka
  • Patent number: 6758605
    Abstract: A method and device for cleaning at least an end face of an optical device retained within an optical connector using a cleaning fabric, comprises, alone or in combination, a) preventing the cleaning fabric from contacting the connector prior to contacting the end face of the optical device; b) a cleaning nose being made of a nose material having a hardness less than that of a material of the optical device with a flexural modulus greater than 2700 MPa and c) ensuring a constant tension on the fabric as it is circulated.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: July 6, 2004
    Assignee: Telops Inc.
    Inventors: André Villemaire, Louis Brault, Jean Giroux
  • Publication number: 20040109647
    Abstract: An optical fiber device includes a plurality of optical fibers that are bundled together within an impact mounted ferrule. A preferred impact mounted bundled optical fiber device includes two, three, four, seven, thirteen or nineteen optical fibers. In these devices the optical fibers are fixedly held in place by frictional contact between the optical fibers within the impact mounted ferrule tip. The impact mounted bundled optical ferrule can be utilized in many optical devices including add/drop devices, bifurcation devices, signal combining devices, multiplexer devices, demultiplexer devices, isolator devices, as well as other types of optical signal processing devices.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Inventors: Michel Y. Rondeau, Shin-Lo Chia, Israel M. Miranda, Alpha F. Diallo
  • Publication number: 20040101255
    Abstract: The method and apparatus of the present invention is capable of precisely determining the orientation of the axis of the guide pin hole defined by a multifiber ferrule. Since the axis of the guide pin hole has a direct relationship to the alignment of the optical fibers, the method and apparatus can also precisely determine the end face angle of the ferrule based upon the axis of the guide pin hole without reference to external features of the ferrule. A measurement pin is initially positioned in a guide pin hole such that a first end of the measurement pin is disposed proximate the end face of the ferrule. The reference plane defined by the first end of the measurement pin is then measured, such as by an interferometer. Based upon the reference plane and the predetermined angle between the reference plane and the axis of the guide pin hole, the method and apparatus can precisely determine the orientation of the axis of the guide pin hole.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 27, 2004
    Inventors: David L. Dean, Darrell R. Childers, James P. Luther, Terry L. Cooke
  • Publication number: 20040099121
    Abstract: A device for cleaving optical fibers having a housing with an internal chamber, a fiber alignment member removably connected to the housing and a fiber cutting member supported by the housing. The alignment member has an opening sized to receive the ferrule of a fiber optic connector and has a stop proximate to the inward end of an opening to engaged the ferrule distal end. The alignment member is quickly interchangeable with another sized and arranged to handle the ferrule of a different type or size connector. The opening is sized to receive ferrule with an optical fiber to be cleaved, and permits the fiber to extend inward beyond the inward end of the opening and into the housing internal chamber.
    Type: Application
    Filed: November 25, 2002
    Publication date: May 27, 2004
    Applicant: Leviton Manufacturing Co., Inc.
    Inventors: Michael M. Itano, Harley B. Lang,, Thomas J. Luenow, Patrick S. McNutt, Michael S. Silbaugh
  • Patent number: 6736551
    Abstract: An end face polishing apparatus has a support member mounted for undergoing rotational movement. A tubular member is mounted on the support member for rotation therewith. The tubular member has a first surface connected to a main surface of the support member and a second surface extending in an axial direction at a first distance from the main surface of the support member. A lapping member is mounted on the support member for rotation therewith. The lapping member has a first surface connected to the main surface of the support member and a second surface extending in the axial direction at a second distance from the main surface of the support member smaller than the first distance.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: May 18, 2004
    Assignee: Seiko Instruments Inc.
    Inventors: Kazuhiko Arai, Kouji Minami
  • Patent number: 6735360
    Abstract: An apparatus is provided for making a collimator for precise alignment of an output optical path emanating from the collimator to obviate the need for adjusting the collimator during assembly to an optical device to compensate for a translational offset and an angular deviation. In an embodiment, the apparatus is capable of determining the translational offset and the angular deviation, and removing a portion of an outer sleeve of the collimator according to the offset and the deviation to form an outer cylindrical surface that is centered about an axis which coincides with the optical path emanating from the collimator, to allow the collimator to be readily fitted to an optical device.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: May 11, 2004
    Assignee: Lightel Technologies, Inc.
    Inventors: Zhomgming Mao, Pai-Sheng Shen
  • Publication number: 20040057672
    Abstract: A process for field terminating at least one optical fiber in an optical fiber connector plug. The process provides an article for retaining an optical fiber cable. The article comprises a housing having a recess for an optical fiber holder and further includes a pivoting guide plate attached at one end of the housing. A rotatable lid attached to the housing rotates between an open position and a closed position. The article retains the optical fiber cable for cleaving and polishing the end face of an optical fiber when the lid is closed. The guide plate engages a cleaving device for cleaving at least one optical fiber. This is followed by end face polishing, of the optical fiber, and release of the optical fiber cable, the optical fiber holder, and the stripped, cleaved and polished optical fiber from the article.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 25, 2004
    Inventors: Donald G. Doss, David S. Hardcastle
  • Patent number: 6705768
    Abstract: An optical connector 21 has sleeves 25 and 25 placed between an optical fiber 40 and reception and transmission modules 26 and 27, wherein the N.A. of each sleeve 25 is larger than the N.A. of the optical fiber 40. A holder 36 forming a part of the sleeve 25 is made of a synthetic resin and can be colored. Further, the sleeve 25 is formed by cutting an optical fiber source line 52, etc.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: March 16, 2004
    Assignee: Yazaki Corporation
    Inventor: Naoshi Serizawa
  • Patent number: 6705767
    Abstract: A method and apparatus precisely determines the orientation of the axis of a guide pin hole defined by a multifiber ferrule, and therefrom, precisely determines an end face angle of the ferrule without reference to external features of the ferrule. A measurement pin is positioned in the guide pin hole with a first end disposed proximate the end face of the ferrule. A reference plane defined by the first end of the measurement pin is measured. The orientation of the axis of the guide pin hole is determined based upon the predetermined angle between the axis of the guide pin hole and the reference plane. A plane defined by at least a portion of the end face of the ferrule is then measured. The end face angle is precisely determined based upon the angular difference between the reference plane and the plane defined by the end face of the ferrule.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: March 16, 2004
    Assignee: Corning Cable Systems LLC
    Inventors: David L. Dean, Jr., Darrell R. Childers, James P. Luther, Terry L. Cooke
  • Patent number: 6702479
    Abstract: An optical fiber connector includes a housing, a ferrule, two pins, a ferrule boot, a pin holder, a spring, a spring push, a sleeve and a boot assembled in series. The ferrule defines two through holes, and the pin holder defines two mounting holes aligned with the through holes, allowing the pins to be inserted through the through holes into the mounting holes.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: March 9, 2004
    Assignee: U-Conn Technology Inc.
    Inventor: Jyh-Cherng Yang
  • Patent number: 6694076
    Abstract: An apparatus and a method for centering a core of a waveguide amplifier. One embodiment of the invention comprises axially rotating a waveguide which has a core, shining a light through a light transmission pathway in the core of the waveguide, and shaping an outer surface of the waveguide in a predetermined pattern with respect to the light transmission pathway.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: February 17, 2004
    Assignee: Intel Corporation
    Inventor: Douglas E. Crafts
  • Publication number: 20040028346
    Abstract: Optical fiber connectors each with a plurality of optical fibers protruding from the front surface of a main body by improved and uniform distances are produced by being subjected to an etching step in which a textile pad free of abrading particles and a slurry containing abrading particles of a relatively larger size are used and thereafter to a final fine polishing step in which a polishing pad with a porous and compressive sponge-like material without affixed abrading particles and a slurry of another kind containing relatively smaller abrading particles are used. The sponge-like material may be polyurethane and is required to have hardness and pores with sizes within specified ranges.
    Type: Application
    Filed: June 23, 2003
    Publication date: February 12, 2004
    Applicant: Nihon Microcoating Co., Ltd.
    Inventors: Tetsuya Baba, Jun Tamura, Vuong Van Bang
  • Publication number: 20040013370
    Abstract: A cleaning apparatus (100) for cleaning an endface (202) of an optical fiber contained within an interface device (200) is provided. The cleaning apparatus includes a housing (110) having an interface portion (116) adapted to be received by the interface device. The cleaning apparatus also includes at least a first nozzle (126) operable to deliver a pressurized gas and a solvent upon the endface to aid in the removal of contaminants on the endface. A method for cleaning an endface of an optical fiber contained within an interface device is also provided. The method comprises the steps of inserting an interface portion within the interface device so as to position a nozzle in proximity to the endface of the interface device. The method further comprises the steps of directing a pressurized gas through the nozzle toward the endface and intermixing a solvent with the pressurized gas.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 22, 2004
    Applicant: Westover Scientific, Inc.
    Inventor: Gregory J. Gerhard
  • Patent number: 6674947
    Abstract: A system of making high density optical fiber arrays that includes securing the optical fiber ends in the housing front mask openings, then lapping the fiber ends and front mask forward surface to angle the fiber end front surfaces so that reflected wave energy does not interfere with optical signal data when transmitted during use. The opening pattern is preferably 2×2 to 128×128 or higher. Several alternate lap tool designs are disclosed including translational and rotating laps formed from solid bodies or a series of stacked plates. Standard slurry grinding and polishing compounds can be applied as desired. If a layer of epoxy originally covers the mask front face, it is removed by the lap tool as the fiber ends are lapped.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: January 6, 2004
    Assignee: Fiberguide Industries, Inc.
    Inventors: Irfan Camlibel, Jonathan Sherman, Theodore C. Rich, Ernest J. Rich
  • Patent number: 6674942
    Abstract: An optical collimator (20) includes an optical fiber (21), a metal ferrule (22), a Graded Index (GRIN) lens (23) and an outer metal tube (24). The optical fiber has an exposed end (211) which is coated with metal. The exposed end of the optical fiber is inserted into the ferrule and laser welded thereto. The GRIN lens is also coated with metal. A plurality of soldering holes (241) is defined in a periphery of the outer tube. Solder is applied to the ferrule and the GRIN lens through the holes to firmly connect the outer tube, the ferrule and the GRIN lens together. After assembly, if the position of the GRIN lens or the optical fiber is found to be inaccurate, the GRIN lens and the ferrule can be easily resoldered.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: January 6, 2004
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Yao-Hao Chang, Chih Chiang Chang, Kun-Tsan Wu
  • Patent number: 6669378
    Abstract: An optical module including a substrate having a groove; an optical waveguide layer formed on the substrate, the optical waveguide layer including an optical waveguide core having first and second ends, the first end being aligned with the groove, and an optical waveguide cladding covering the optical waveguide core; a ferrule having a through hole; and an optical fiber inserted and fixed in the through hole. The ferrule has a flat cut portion for semicylindrically exposing a part of the optical fiber inserted and fixed in the through hole. The ferrule is fixed at the flat cut portion to the substrate so that the part of the optical fiber exposed to the flat cut portion is inserted into the groove of the substrate until one end of the optical fiber abuts against the first end of the optical waveguide core.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: December 30, 2003
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Nobuhara, Goji Nakagawa, Kazuhiro Tanaka
  • Publication number: 20030235374
    Abstract: A ferrule assembly having highly protruding optical fibers and a corresponding method of efficiently, precisely and repeatedly fabricating the ferrule assemblies are provided. In this regard, a ferrule assembly is provided that includes a plurality of optical fibers extending at least about 3.5 &mgr;m beyond the front face. The end portions of the optical fibers of the ferrule assembly may also be substantially coplanar with the end portions of the optical fibers differing in position from one another by no more than 100 nm. The ferrule assembly may be efficiently fabricated by polishing the optical fibers to a desired protrusion without first grinding or polishing the optical fibers to be flush with the front face of the ferrule. The ferrule assembly may be even more efficiently fabricated in instances in which the ferrule includes at least one polishing feature, such as an outwardly extending pedestal or a recessed portion.
    Type: Application
    Filed: June 24, 2002
    Publication date: December 25, 2003
    Applicant: Corning Cable Systems LLC
    Inventors: James P. Luther, Dennis M. Knecht, Hieu V. Tran, Robert B. Elkins
  • Patent number: 6666587
    Abstract: In an optical device manufacturing method according to the present invention, a metal film is formed on a side surface of a bare fiber, a film is formed on an end face of the bare fiber, and, thereafter, the bare fiber is inserted into a ferrule until the end face of the bare fiber on which the film was formed is protruded from an end face of the ferrule, and then, the bare fiber is secured to the ferrule. In an optical device according to the present invention, a bare fiber having a side surface on which a metal film was formed is inserted into and secured to a ferrule, and an end face of the bare fiber is protruded from an end face of the ferrule, and a distance L between the end faces satisfies a relationship L<4×d (outer diameter of the bare fiber), and a film is formed on the end face of the bare fiber.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: December 23, 2003
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Tetsuro Wada, Toshihiro Mikami
  • Publication number: 20030215192
    Abstract: A device includes a stub, and an optical fiber. The stub has an aperture, and a first end and a second end. The optical fiber is mounted in the aperture of the stub. The optical fiber has a first end and a second end. The first end of the optical fiber is polished so as to be flush with the first end of the stub. The second end of the optical fiber is cleaved at a predetermined position so as to provide for a predetermined length of the optical fiber measured from the first end of the optical fiber to the second end of the optical fiber.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventors: Richard C.E. Durrant, Aleksandr Lantsman, David G. Mead, Christopher M. Warnes, Theodore Washburn
  • Patent number: 6648522
    Abstract: A fiber optic connector polishing fixture assembly for supporting a terminus of a fiber optic cable before a polishing surface. The assembly comprises: a fiber optic polishing fixture adapted to support the terminus before the polishing surface; a fixture support connected to the fixture for supporting the fixture before the polishing surface; and an adjustable connection between the fixture and the fixture support having user accessible adjustment controls for allowing a user to operate the controls to shift the fixture and fixture support relative to one another for substantially eliminating an apex offset of the terminus with respect to the polishing surface.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: November 18, 2003
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: John R. Kolasinski, Joseph Roch Moszcziewski
  • Publication number: 20030206702
    Abstract: A method of manufacturing an optical fiber end, provided with a face transparent to light waves, for attaching a ferrule, is described, in which the face is formed by cutting through the optical fiber and mechanical machining and the optical fiber is freed of its outer cladding, which completely encloses the outside of the optical fiber, in the region of an end section, the cutting through of the optical fiber (1) and the mechanical machining of the face (14, 15) being performed as a self-contained work step, which simultaneously includes the cutting through of the optical fiber (1) and the fine machining of the face (14, 15) obtained in this way, and the removal of the outer cladding (21, 22) in the region of the end section (23, 24) only being completed subsequently to this work step.
    Type: Application
    Filed: April 2, 2003
    Publication date: November 6, 2003
    Applicant: Bernhard Schaefer Werkzeug- und Sondermaschinen GmbH
    Inventors: Stefan Neubauer, Matthias Woll
  • Patent number: 6641308
    Abstract: An optical module including a substrate having a groove; an optical waveguide layer formed on the substrate, the optical waveguide layer including an optical waveguide core having first and second ends, the first end being aligned with the groove, and an optical waveguide cladding covering the optical waveguide core; a ferrule having a through hole; and an optical fiber inserted and fixed in the through hole. The ferrule has a flat cut portion for semicylindrically exposing a part of the optical fiber inserted and fixed in the through hole. The ferrule is fixed at the flat cut portion to the substrate so that the part of the optical fiber exposed to the flat cut portion is inserted into the groove of the substrate until one end of the optical fiber abuts against the first end of the optical waveguide core.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: November 4, 2003
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Nobuhara, Goji Nakagawa, Kazuhiro Tanaka
  • Patent number: 6632026
    Abstract: Optical fiber connectors each with a plurality of optical fibers protruding from the front surface of a main body by improved and uniform distances are produced by being subjected to an etching step in which a textile pad free of abrading particles and a slurry containing abrading particles of a relatively larger size are used and thereafter to a final fine polishing step in which a polishing pad with a porous and compressive sponge-like material without affixed abrading particles and a slurry of another kind containing relatively smaller abrading particles are used. The sponge-like material may be polyurethane and is required to have hardness and pores with sizes within specified ranges.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: October 14, 2003
    Assignee: Nihon Microcoating Co., Ltd.
    Inventors: Tetsuya Baba, Jun Tamura, Vuong Van Bang
  • Patent number: 6619857
    Abstract: A cleaning tool for an optical connector cleans a connecting end face of a ferrule fixed to an optical connecting plug, and includes a cleaning sheet and a plug holding member. The cleaning sheet cleans the connecting end face of the ferrule. The plug holding member holds the optical connecting plug such that the connecting end face of the ferrule comes into contact with the cleaning sheet to be parallel to it.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: September 16, 2003
    Assignee: NTT Advanced Technology Corporation
    Inventor: Taisei Miyake
  • Publication number: 20030156799
    Abstract: A ferrule with optical fiber is held to a ferrule holder. The ferrule is made of a material with 0.5˜2 times the wearing speed characteristic in comparison with a quartz glass. The ferrule holder comprises a polishing plate which has an elastic module equivalent to 70˜95 degrees of rubber hardness in a state of adhering a polishing sheet thereon. The ferrule holder is made to be self-supported on a polishing table in a manner such that the end face of the ferrule with optical fiber is in contact with the polishing sheet. The ferrule holder is made to manually move on the polishing table by a predetermined distance in the horizontal direction to slide the end face of the ferrule with optical fiber on the polishing sheet, thereby the end face of the ferrule with optical fiber is polished to a spherical convex surface centered on the optical fiber.
    Type: Application
    Filed: January 8, 2003
    Publication date: August 21, 2003
    Inventors: Masanori Wada, Hirokazu Takeuchi, Azusa Tanaka
  • Publication number: 20030152334
    Abstract: A method for polishing an end face of a ferrule is disclosed herein. The ferrule includes an opening in which an optical fiber is positioned. The method includes the step of recessing an end of the optical fiber relative to the end face of the ferrule. The method also includes the step of polishing the end face of the ferrule after the end of the optical fiber has been recessed.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventor: Calvin T. Millmann
  • Publication number: 20030147599
    Abstract: An end face polishing method that can improve polishing accuracy of an end face of a ferrule and increase return loss in opposite connection is to be provided. In the end face polishing method in which the end face of a rod shape member is polished by pressing the rod shape member attached to a jig board to an abrasive member on a polishing board which is supported by a main body of an apparatus to be rotated and oscillated, by using the plurality of abrasive members whose hardnesses are higher than the rod shape member and different from the rod shape member, the end face of the rod shape member is polished with the abrasive members in a manner that the abrasive member is exchanged in the order from that of higher hardness to that of lower hardness.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 7, 2003
    Inventors: Kouji Minami, Junji Taira
  • Publication number: 20030142922
    Abstract: A method for optically joining an optical fiber array holder with an opponent member includes: disposing the plurality of optical fibers extending from the end face in a fiber array holder; polishing an end face of each of the plurality of optical fibers disposed in the fiber array block; removing the fiber array block from the plurality of optical fibers; and placing the plurality of optical fibers in corresponding guides formed in a waveguide substrate, the polished end faces of each of the plurality of optical fibers extending to an opponent member.
    Type: Application
    Filed: January 28, 2002
    Publication date: July 31, 2003
    Inventors: Joseph L. Dallas, Angelique X. Irvin, Robert W. Irvin, Ralph S. Jameson, William A. Mamakos
  • Patent number: 6599030
    Abstract: A method for polishing an end face of a ferrule is disclosed herein. The ferrule includes an opening in which an optical fiber is positioned. The method includes the step of recessing an end of the optical fiber relative to the end face of the ferrule. The method also includes the step of polishing the end face of the ferrule after the end of the optical fiber has been recessed.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: July 29, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventor: Calvin T. Millmann
  • Patent number: 6595698
    Abstract: A high density fiber terminator/connector and methods of making the high density fiber terminator/connector are provided. One method comprises using deep reactive ion etching to etch a plurality of holes through a silicon substrate, wherein each hole is sized to fit an optical fiber; placing an optical fiber in at least one hole; removing portions of the fibers such that one end of each fiber is substantially even with one side of the substrate; polishing a surface of the ends of the fibers and the side of the substrate that are substantially even; and forming a coating on the surface of the ends of the fibers and the side of the substrate that are substantially even.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: July 22, 2003
    Assignee: Siwave, Inc.
    Inventors: Roman Carlos Gutierrez, Tony Kai Tang
  • Publication number: 20030128939
    Abstract: A method and apparatus is provided for mounting any one of a plurality of types of connectors upon the end portion of a fiber optic cable. The automated fiber optic connectorization apparatus includes a memory device for storing data relating to a plurality of types of connectors. The automated fiber optic connectorization apparatus also includes a controller for receiving input from a system operator or other source that specifies the type of connector to be mounted upon the specified fiber optic cable, the polishing geometry, and the optical performance specifications. Based upon this input, the controller determines the components required to mount the specified type of connector upon the end portion of the fiber optic cable based upon the data stored by the memory device. The automated fiber optic connectorization apparatus also includes means for obtaining the necessary components and means for assembling these components upon the end portion of the fiber optic cable.
    Type: Application
    Filed: August 16, 2002
    Publication date: July 10, 2003
    Applicant: McDonnell Douglas Corporation
    Inventors: Sang Van Nguyen, Foad Towfiq, John Andrew White
  • Patent number: 6579015
    Abstract: An optical fiber connector ferrule blank has, at its distal end, a pedestal region which has a bevel within a carefully chosen range of angles and a second bevel or chamfer which extends from the end of the first bevel at a different range of angles. The combination of first and second bevels makes possible a finished ferrule that can be used in a variety of different connectors while satisfying the manufacturer's requirement for pedestal diameter, angle of the second bevel, and the length of the combined bevels.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: June 17, 2003
    Assignee: Fitel USA Corporation
    Inventor: Norman R. Lampert
  • Publication number: 20030099453
    Abstract: The invention provides a hermetic fiber-optic seal, such as in an optical fiber ferrule or feedthrough, having an optical fiber, a glass solder for encasing at least a portion of the optical fiber, a first glass sleeve for encasing at least a first portion of the glass solder, a second glass sleeve for encasing at least a second portion of the glass solder, and an outer sleeve for encasing at least a portion of the first glass sleeve and the second glass sleeve. A gap filled with glass solder may be provided between the first glass sleeve and the second glass sleeve. The hermetic fiber-optic seal is made by an extrusion process.
    Type: Application
    Filed: November 27, 2001
    Publication date: May 29, 2003
    Inventors: Abdul Jaleel K. Moidu, William Thomas Moore
  • Publication number: 20030095753
    Abstract: The capillary for optical fiber has an inner hole allowing an optical fiber to be inserted and retained therein. Ra value of the surface roughness of the inner hole is 0.1 &mgr;m to 0.5 &mgr;m. The ferrule for optical connector is provided with a chamfered part on one end of the capillary for optical fiber for guiding it into a sleeve and a flared part on the other end of the capillary for optical fiber for guiding the optical fiber into the inner hole.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 22, 2003
    Inventors: Masanori Wada, Hirokazu Takeuchi, Kazuya Saito
  • Patent number: 6556747
    Abstract: The present invention consists of a method and a structure formed by such method relating to optical fibers. Specifically, the invention consists of a chemical mill process for shaping the end of a fiber and thereby simultaneously forming both lens and precision mounting region. Also described is a self-aligning structure with integral lens. Both features improve light coupling. The lens focuses light energy entering and exiting the fiber. The precision mounting region facilitates alignment of fiber at couplings.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: April 29, 2003
    Assignee: LightMatrix Technologies, Inc.
    Inventors: Ali Ouali, Jian-Ming Yuan, Vipulkumar Patel
  • Patent number: 6554488
    Abstract: The thermally conductive working body 25 having a rectangular parallelepiped shape is provided on the heating surface 21h of the hot plate 21 to protrude therefrom. The plastic optical fiber 2 is inserted into the ferrule portion 11 of the optical connector 10 and then positioned/held to cause its top end portion to protrude. The top end portion of the plastic optical fiber 2, that is projected to the top end side of the ferrule portion 11, is pushed against the mirror surface 25a of the thermally conductive working body 25 by inserting the thermally conductive working body 25 into the protection wall portion 16 of the optical connector 10 in the situation that the thermally conductive working body 25 is heated by the hot plate 21.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: April 29, 2003
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventor: Kazuhiro Asada
  • Publication number: 20030049012
    Abstract: Disclosed are a plastic optical fiber end surface processing method which allows formation of not only a convex semi-spherical surface but also of an arbitrary profile such as a concave semi-spherical surface, an apparatus for use in the method, a cutter for the method, and a plastic optical fiber connection method. At least the core portion of the end surface of a plastic optical fiber is cut into a semi-spherical surface by a semi-circular cutter, which is of a convex or a concave shape. This cutter is inserted into a through-hole of a holder and rotates therein. The plastic optical fiber is inserted into the through-hole of this holder, and end surface processing is effected by means of the rotating cutter.
    Type: Application
    Filed: May 21, 2002
    Publication date: March 13, 2003
    Inventors: Yoshimi Iijima, Hiroshi Kizukuri
  • Publication number: 20030045216
    Abstract: An end face polishing apparatus with improved polishing precision regardless of the length of ferrules when end faces of the ferrules are polished is provided. In an end face polishing apparatus polishing a rod-shaped member mounted at a polishing fixture by pressing the rod-shaped member against a lapping member on a lapping machine provided on a surface plate that is supported at the main body of the apparatus to rotate and rock, there are a plurality of rod-shaped guide members provided at the polishing fixture radially outwardly projecting and a tubular member capable of supporting the polishing fixture through the guide members on the surface plate. In this way, the guide members at the polishing fixture and the tubular member abut against each other so that the movement of the polishing fixture in the pressing direction is restricted.
    Type: Application
    Filed: July 2, 2002
    Publication date: March 6, 2003
    Inventors: Kazuhiko Arai, Kouji Minami
  • Publication number: 20030039452
    Abstract: Optical fiber connectors each with a plurality of optical fibers protruding from the front surface of a main body by improved and uniform distances are produced by being subjected to an etching step in which a textile pad free of abrading particles and a slurry containing abrading particles of a relatively larger size are used and thereafter to a final fine polishing step in which a polishing pad with a porous and compressive sponge-like material without affixed abrading particles and a slurry of another kind containing relatively smaller abrading particles are used. The sponge-like material may be polyurethane and is required to have hardness and pores with sizes within specified ranges.
    Type: Application
    Filed: August 24, 2001
    Publication date: February 27, 2003
    Inventors: Tetsuya Baba, Jun Tamura, Vuong Van Bang
  • Publication number: 20030036342
    Abstract: The center of a turntable 30 moves around the central axial line of an autoroation disk 20 along the circular orbit C of a smaller diameter than that of an autorotation disk 20. Thus, the turntable 30 revolves both around a center point O and on its own axis in accordance with an autorotation of the autorotation disk 20. A polishing holder 60 holds a connector of an optical fiber polished by a polishing film 41 arranged on the upper plane of the turntable 30. An optical fiber end face polishing machine provided with a memory 85 for storing a control program which allows a control device 80 to execute predetermined polishing steps, the control device 80 being for controlling an autorotation motor 16 of the turntable 30 and a revolution motor 14 thereof.
    Type: Application
    Filed: August 13, 2002
    Publication date: February 20, 2003
    Applicant: Seikoh Giken Co., Ltd.
    Inventors: Kunio Yamada, Takehiko Narita, Yoshitaka Kimura, Yuichi Arai
  • Patent number: 6519387
    Abstract: An image recording device and an optical fiber are provided which can obtain scanned beam spots having configurations which extend in an elongated manner in a subscanning direction and which are rectangular, and which are suitably used for recording onto a heat-mode-type photosensitive recording material. The image recording device records an image by illuminating a light beam outputted from an exposure head which is connected to a semiconductor laser unit via an optical fiber. In the image recording device, the optical fiber is an optical fiber having a core whose cross-sectional configuration in a direction intersecting an optical axis of the light beam is an elongated and a rectangular configuration. An image is focused by a focusing lens such that a short width direction of a light beam emitted from a light exit portion of the optical fiber is oriented in a main scanning direction on a recording medium.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: February 11, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Sunagawa, Shizuo Umemura
  • Patent number: 6510271
    Abstract: The present invention incorporates an optical fiber cleaving mechanism within a prior art optical fiber impact mounting device. The optical fiber cleaving mechanism is pivotally mounted within the fiberoptic connector holding mechanism, such that an optical fiber cleaving blade is disposed proximate the tip of the fiberoptic connector. After the optical fiber has been engaged within the fiberoptic connector an end of the optical fiber protrudes from the tip of the fiberoptic connector. An actuator member is then manipulated to cause the optical fiber cleaving mechanism to rotate downwardly, such that the cleaving blade will make cleaving contact with the surface of the optical fiber. Immediately prior to the contact of the cleaving blade with the optical fiber, a portion of the cleaving mechanism makes contact with the protruding end of the optical fiber to bend it downwardly, and the subsequent contact of the cleaving blade will cleave the optical fiber.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: January 21, 2003
    Assignee: Valdor Fiber Optics, Inc.
    Inventor: Wojciech Beldycki
  • Publication number: 20030012519
    Abstract: A connector is provided which has a ferrule forcibly, intimately connected to a plastic optical fiber by forcibly deforming the ferrule into intimate contact with the plastic optical fiber over a preselected length. The fiber and ferrule are free of adhesive, have a machined planar end oriented 90 degrees relative to the axis of the ferrule and plastic optical fiber and have a preselected, carefully controlled length.
    Type: Application
    Filed: February 28, 2001
    Publication date: January 16, 2003
    Inventors: Paul M. Mulligan, Carl W. Lindenmeyer