Patents by Inventor Keith Kang

Keith Kang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7077577
    Abstract: An apparatus to accurately hold an optical fiber within a commercial fiber optic connector. The connector has a first high precision slice having multiple holes of a first area and a first alignment opening and a second high precision slice having multiple holes of a second area and a second alignment opening. The holes of the first high precision slice are arranged relative to the first alignment opening so that, when the second high precision slice and the first high precision slice are juxtaposed with one another and the first alignment opening and the second alignment opening are aligned, the holes of the first high precision slice and the holes of the second high precision slice will be offset relative to each other and will define an opening having an area less than a smaller of the first area and second area. The opening is capable of closely constraining an optical fiber inserted therethrough.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: July 18, 2006
    Assignee: Cubic Wafer, Inc.
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Patent number: 6989945
    Abstract: A long-throw, tight focussing optical coupler has a first passive optical element capable of coupling light between an optical source and an optical destination and a second passive optical element, capable of coupling light between the optical source and the optical destination, located between the first passive optical element and one of the optical source or the optical destination such that, a light beam from the optical source will be transferred to the optical destination when the optical source and optical destination are spaced apart by a distance.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: January 24, 2006
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, John Trezza
  • Patent number: 6945701
    Abstract: A method of making A fiber optic connector adapted to receive a fiber bearing unit involves coupling at least one high precision piece, having holes configured to accept an array of optical fibers, to a low precision piece to form a unit, inserting optical fibers into the unit and housing the unit within a fiber optic connector housing. A commercial fiber optic connector of a style constructed to accept a ferrule-like unit therein has a connector housing, at least 36 optical fibers, a low precision piece, and at least one high precision slice having at least 36 fiber holes each adapted to accept one of the optical fibers, the low precision piece and the at least one high precision slice being contained substantially within the connector housing and forming the ferrule like unit.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: September 20, 2005
    Assignee: Xanoptix Inc.
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Patent number: 6927861
    Abstract: A method involves aligning each of two optical components to be joined relative to a common standard, removing the common standard, and joining each of two optical components to each other in alignment.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: August 9, 2005
    Assignee: Xanoptix, Inc.
    Inventors: Chuang Zhou, Keith Kang
  • Patent number: 6913397
    Abstract: A system and method for insertion of fibers into respective rows of fiber holes in a ferrule that involves mounting the ferrule in a first element and a proximal end of a first cable containing exposed fibers onto a movable element, adjusting the movable element until the fibers are adjacent to a bottom-most row of fiber holes, inserting each fiber into its respective hole in the bottom-most row, mounting the first cable in a second element, releasing the first cable from the movable element, mounting a second cable containing exposed fibers onto the movable element, adjusting the movable element until the fibers are adjacent to a second row of ferrule fiber holes, and inserting each fiber into its respective hole in the second row.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: July 5, 2005
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, Misu Kang, Robert Otto
  • Patent number: 6899465
    Abstract: An apparatus for use in a commercial fiber optic connector is made up of an assembly of a set of slices. Each of the slices having multiple through holes of a specified arrangement. At least some of the through holes on any two adjoining slices are aligned with respect to each other so as to define a conduit between them. A transmission medium is within the holes. A method of making a fiber optic connector adapted to receive a fiber bearing unit is also described. The method involves coupling at least two high precision pieces together, the at least two high precision pieces having holes configured with an optical medium inserted therein after the coupling and cured to form a waveguide structure, coupling the at least two high precision pieces to a low precision piece to form a unit, and housing the unit within a fiber optic connector housing.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: May 31, 2005
    Assignee: Xanoptix Inc.
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Patent number: 6880980
    Abstract: A ferrule has a body, peripherally dimensioned for receipt within a commercially available fiber optic connector, the body has a forward portion comprising a front side and a rear side, the front side defining a face of the ferrule, the rear side defining an inner surface. The forward portion has a large format array of fiber holes, each of the fiber holes in the array extending between the front side and the rear side and being sized to accept an optical fiber inserted therein, and the forward portion having a thickness, T, less than 3000 microns but at least a minimum thickness sufficient to support optical fibers inserted into the fiber holes. An optical connector, having a ferrule, and a fiber optic cable assembly are also described.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: April 19, 2005
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, John Trezza
  • Patent number: 6817778
    Abstract: A female format connector, usable for connection with a male format connector having an alignment pin is described as having a high-precision piece coupled to a low precision piece. The low precision piece has an alignment opening dimensioned to accept the alignment pin of the male format device. The high-precision piece also has an alignment opening. The alignment openings are sized and positioned for accurate alignment between the pieces during coupling and, after coupling, the high-precision piece is modified such that the second alignment opening, after modification, is larger than it was prior to the coupling. A method of forming a female format ferrule involves coupling a high precision piece to a low precision piece, via alignment holes on each, the alignment holes are sized to accept a common alignment pin for maintaining accurate alignment between the pieces during coupling, and, after coupling, removing some of the alignment hole wall.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: November 16, 2004
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, Greg Dudoff
  • Patent number: 6814498
    Abstract: An optical unit has multiple optical devices, a collimated coupler disposed relative to the multiple optical devices so that laser light can be transferred between at least two of the multiple optical devices and the collimated coupler without crosstalk, and a fused glass collimator, disposed within the collimated coupler, having multiple optical fibers arranged in a predetermined arrangement relative to the multiple optical devices so that the number of optical fibers is always equal or greater than the number of optical devices on a use basis.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: November 9, 2004
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, John Trezza
  • Publication number: 20040218871
    Abstract: An apparatus for use in a commercial fiber optic connector is made up of an assembly of a set of slices. Each of the slices having multiple through holes of a specified arrangement. At least some of the through holes on any two adjoining slices are aligned with respect to each other so as to define a conduit between them. A transmission medium is within the holes. A method of making a fiber optic connector adapted to receive a fiber bearing unit is also described. The method involves coupling at least two high precision pieces together, the at least two high precision pieces having holes configured with an optical medium inserted therein after the coupling and cured to form a waveguide structure, coupling the at least two high precision pieces to a low precision piece to form a unit, and housing the unit within a fiber optic connector housing.
    Type: Application
    Filed: June 26, 2003
    Publication date: November 4, 2004
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Publication number: 20040213538
    Abstract: A method of making a fiber optic connector adapted to receive a fiber bearing unit involves coupling at least one high precision piece, having holes configured to accept an array of optical fibers, to a low precision piece to form a unit, inserting optical fibers into the unit and housing the unit within a fiber optic connector housing. A commercial fiber optic connector of a style constructed to accept a ferrule-like unit therein has a connector housing, at least 36 optical fibers, a low precision piece, and at least one high precision slice having at least 36 fiber holes each adapted to accept one of the optical fibers, the low precision piece and the at least one high precision slice being contained substantially within the connector housing and forming the ferrule like unit.
    Type: Application
    Filed: June 26, 2003
    Publication date: October 28, 2004
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Publication number: 20040213523
    Abstract: An apparatus to accurately hold an optical fiber within a commercial fiber optic connector. The connector has a first high precision slice having multiple holes of a first area and a first alignment opening and a second high precision slice having multiple holes of a second area and a second alignment opening. The holes of the first high precision slice are arranged relative to the first alignment opening so that, when the second high precision slice and the first high precision slice are juxtaposed with one another and the first alignment opening and the second alignment opening are aligned, the holes of the first high precision slice and the holes of the second high precision slice will be offset relative to each other and will define an opening having an area less than a smaller of the first area and second area. The opening is capable of closely constraining an optical fiber inserted therethrough.
    Type: Application
    Filed: June 26, 2003
    Publication date: October 28, 2004
    Inventors: John Trezza, Keith Kang, Greg Dudoff, Ronald Olson
  • Publication number: 20040190825
    Abstract: An optical unit has multiple optical devices, a collimated coupler disposed relative to the multiple optical devices so that laser light can be transferred between at least two of the multiple optical devices and the collimated coupler without crosstalk, and a fused glass collimator, disposed within the collimated coupler, having multiple optical fibers arranged in a predetermined arrangement relative to the multiple optical devices so that the number of optical fibers is always equal to or greater than the number of optical devices on a use basis.
    Type: Application
    Filed: April 2, 2004
    Publication date: September 30, 2004
    Inventors: Keith Kang, John Trezza
  • Patent number: 6773166
    Abstract: A commercial fiber optic connector of a style constructed to accept a ferrule-like unit therein has optical fibers, each having a first part and a second part separated by lengths, a low precision piece having a peripheral shape of a part of the ferrule like unit, two high precision slices each having fiber holes therein. A chamber separates the two high precision pieces defining a volume therebetween. The optical fibers have their first parts within the fiber holes in one of the high precision slices, their second parts within the fiber holes in the other of the high precision slices, and at least some of their length within the volume. The low precision piece and the two high precision slices collectively form the ferrule like unit and the ferrule like unit is contained substantially within the connector housing.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: August 10, 2004
    Assignee: Xanoptix, Inc.
    Inventors: John Trezza, Greg Dudoff, Keith Kang, Ronald Olson
  • Patent number: 6771860
    Abstract: A coupler adapter has a base and at least one alignment feature disposed upon the base. The at least one alignment feature is constructed for aligning a multi-fiber bundle to an opto-electronic module to permit transmission of optical signals between the multi-fiber bundle and optical devices within the opto-electronic module when the opto-electronic module is larger in span than a spacing of alignment elements used in a commercial connector that holds the multi-fiber bundle.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: August 3, 2004
    Assignee: Xanoptix, Inc.
    Inventors: John Trezza, Keith Kang
  • Patent number: 6722788
    Abstract: An optical unit has multiple optical devices, a collimated coupler disposed relative to the multiple optical devices so that laser light can be transferred between at least two of the multiple optical devices and the collimated coupler without crosstalk, and a fused glass collimator, disposed within the collimated coupler, having multiple optical fibers arranged in a predetermined arrangement relative to the multiple optical devices so that the number of optical fibers is always equal to or greater than the number of optical devices on a use basis.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: April 20, 2004
    Assignee: Xanoptix Inc.
    Inventors: Keith Kang, John Trezza
  • Publication number: 20040057671
    Abstract: A ferrule has a body, peripherally dimensioned for receipt within a commercially available fiber optic connector, the body has a forward portion comprising a front side and a rear side, the front side defining a face of the ferrule, the rear side defining an inner surface. The forward portion has a large format array of fiber holes, each of the fiber holes in the array extending between the front side and the rear side and being sized to accept an optical fiber inserted therein, and the forward portion having a thickness, T, less than 3000 microns but at least a minimum thickness sufficient to support optical fibers inserted into the fiber holes. An optical connector, having a ferrule, and a fiber optic cable assembly are also described.
    Type: Application
    Filed: July 18, 2003
    Publication date: March 25, 2004
    Inventors: Keith Kang, John Trezza
  • Publication number: 20040042733
    Abstract: A system and method for insertion of fibers into respective rows of fiber holes in a ferrule that involves mounting the ferrule in a first element and a proximal end of a first cable containing exposed fibers onto a movable element, adjusting the movable element until the fibers are adjacent to a bottom-most row of fiber holes, inserting each fiber into its respective hole in the bottom-most row, mounting the first cable in a second element, releasing the first cable from the movable element, mounting a second cable containing exposed fibers onto the movable element, adjusting the movable element until the fibers are adjacent to a second row of ferrule fiber holes, and inserting each fiber into its respective hole in the second row.
    Type: Application
    Filed: June 17, 2003
    Publication date: March 4, 2004
    Inventors: Keith Kang, Misu Kang, Robert Otto
  • Publication number: 20040028344
    Abstract: A female format connector, usable for connection with a male format connector having an alignment pin is described as having a high-precision piece coupled to a low precision piece. The low precision piece has an alignment opening dimensioned to accept the alignment pin of the male format device. The high-precision piece also has an alignment opening. The alignment openings are sized and positioned for accurate alignment between the pieces during coupling and, after coupling, the high-precision piece is modified such that the second alignment opening, after modification, is larger than it was prior to the coupling. A method of forming a female format ferrule involves coupling a high precision piece to a low precision piece, via alignment holes on each, the alignment holes are sized to accept a common alignment pin for maintaining accurate alignment between the pieces during coupling, and, after coupling, removing some of the alignment hole wall.
    Type: Application
    Filed: June 27, 2003
    Publication date: February 12, 2004
    Inventors: Keith Kang, Greg Dudoff
  • Patent number: 6629780
    Abstract: A female format connector, usable for connection with a male format connector having an alignment pin is described as having a high-precision piece coupled to a low precision piece. The low precision piece has an alignment opening dimensioned to accept the alignment pin of the male format device. The high-precision piece also has an alignment opening. The alignment openings are sized and positioned for accurate alignment between the pieces during coupling and, after coupling, the high-precision piece is modified such that the second alignment opening, after modification, is larger than it was prior to the coupling. A method of forming a female format ferrule involves coupling a high precision piece to a low precision piece, via alignment holes on each, the alignment holes are sized to accept a common alignment pin for maintaining accurate alignment between the pieces during coupling, and, after coupling, removing some of the alignment hole wall.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: October 7, 2003
    Assignee: Xanoptix, Inc.
    Inventors: Keith Kang, Greg Dudoff