Patents Examined by Tim M. Wong
  • Fiber optic cable with a concave surface
    Patent number: 7391944
    Abstract: A drop cable includes a jacket having first and second opposing sides. The first side has a concave surface. At least one strength member is disposed in the jacket. An optical transmission component is disposed within the jacket and proximate the concave surface. The optical transmission component includes a plurality of optical fibers.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: June 24, 2008
    Assignee: Draka Comteq B.V.
    Inventors: Olaf Loy Storaasli, Jeffrey Scott Barker
  • Method and apparatus for aligning optical components
    Patent number: 7349604
    Abstract: Methods and apparatuses are provided for aligning two optical components. Two optical components are aligned by stacking a first, a second, and a third transparent optical element between two optical components. The optical components are adjusted in the x, y, and z-axes, and rotations about the x, y, and z-axes.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: March 25, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Stephan Clark
  • Vertically-integrated waveguide photodetector apparatus and related coupling methods
    Patent number: 7305157
    Abstract: High-speed optoelectronic devices having a waveguide densely integrated with and efficiently coupled to a photodetector are fabricated utilizing methods generally compatible with CMOS processing techniques. In various implementations, the waveguide consists essentially of single-crystal silicon and the photodetector contains, or consists essentially of, epitaxially grown germanium or a silicon-germanium alloy having a germanium concentration exceeding about 90%.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: December 4, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Donghwan Ahn, Jifeng Liu, Jurgen Michel, Lionel C. Kimerling
  • Bias adjustment method for optical SSB modulator or optical FSK modulator
    Patent number: 7245787
    Abstract: A method of appropriately adjusting a bias signal of an optical modulator is provided. For an optical modulator provided with a first sub Mach-Zehnder waveguide, a second sub Mach-Zehnder waveguide and a main Mach-Zehnder waveguide, a predetermined signal is supplied to the main Mach-Zehnder waveguide, and bias signals supplied to the first and second Mach-Zehnder waveguides are adjusted so as to lower an amplitude of an output light of the main Mach-Zehnder waveguide.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: July 17, 2007
    Assignee: National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Tetsuya Kawanishi, Masayuki Izutsu