Patents by Inventor Edward A. Pitman

Edward A. Pitman 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: 7116689
    Abstract: A method of evaluating a laser comprises providing a current into the laser and measuring a voltage output of an electroabsorptive modulator (EAM) coupled to the laser. A device under test includes a laser, and an electroabsorptive modulator (EAM), wherein said EAM monitors an output of said laser.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: October 3, 2006
    Inventor: Edward A. Pitman
  • Publication number: 20040032894
    Abstract: A method of evaluating a laser comprises providing a current into the laser and measuring a voltage output of an electroabsorptive modulator (EAM) coupled to the laser.
    Type: Application
    Filed: August 16, 2002
    Publication date: February 19, 2004
    Inventor: Edward A. Pitman
  • Patent number: 6580543
    Abstract: In accordance with the invention, a multimode optical fiber communication system is provided with offset illumination by disposing an optical pinhole adjacent an end of the multimode fiber core and offset from the center of the core. The pinhole permits direct offset illumination without the difficulty and expense of a conventional patch-cord assembly.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: June 17, 2003
    Assignee: Tri Quint Technology Holding Co.
    Inventors: Zhencan Frank Fan, Hong-Tai Man, Arlen R. Martin, Steven L. Moyer, Mary J. Nadeau, Steven P. O'Neill, John William Osenbach, Edward A. Pitman, Renyi Yang, Craig A. Young
  • Patent number: 6265240
    Abstract: A method and apparatus for passively aligning an optical element on an optical die wherein multiple potential mounting pads are supplied for potential mounting of the optical component. Appropriate tables are generated for 1) the response of the optical detecting component for a given light power level as a function of the mounting position of the optical detecting component, and 2) the asymmetry of the light generating component. Given the two tables an algorithm is prepared for automatically determining the appropriate mounting position to provide desired detection device response characteristics for any given light generating component to be mounted on the die.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: July 24, 2001
    Assignee: Lucent Technologies, Inc.
    Inventors: Mindaugas F. Dautartas, James F. Dormer, John W. Osenbach, Edward A. Pitman
  • Patent number: 5881193
    Abstract: There is disclosed, an optical subassembly includes a platform on which a laser and photodiode are mounted. The laser has a rear facet through which passes a small portion of the light emitted by the laser. The photodiode is mounted on the surface of the platform with a light admitting facet for receiving a portion of the light emitted from the rear facet of the laser being substantially perpendicular to the light emitting facet of the laser. The surface of the platform may include a channel. The channel may be tapered from a narrower end near the laser to a wider end near the photodiode, and may be coated with a light-reflective material.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: March 9, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Felix Anigbo, Mindaugas Fernand Dautartas, William Michael MacDonald, Edward A. Pitman, David Andrew Ramsey, Dominic Paul Rinaudo, Yiu-Huen Wong
  • Patent number: 5841544
    Abstract: There is disclosed a method of positioning an optical subassembly for testing includes positioning an optical subassembly within a capture zone on a support surface of a test fixture. At least two probes engage surfaces of respective ones of precisely located fiducials in a surface of the optical subassembly. A third probe contacts a surface of the optical subassembly, which in a preferred embodiment may be another fiducial in the surface of the optical subassembly. Upon engagement of the probes with surfaces of respective fiducials and movement of the probes further into respective fiducials, the optical subassembly is translated into more precise alignment with optics of the test fixture.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: November 24, 1998
    Assignee: Lucent Technologies, Inc.
    Inventors: Mindaugas Fernand Dautartas, Edward A. Pitman