Patents by Inventor Peter Kowalski

Peter Kowalski 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).

  • Publication number: 20250068813
    Abstract: Co-simulation of an integrated circuit design is restarted from a co-simulation snapshot. Execution of a respective co-simulation communicator (CC) process for each of a main co-simulation unit, a first client co-simulation unit, and a second client co-simulation unit is initiated. A first child process is forked from the CC process of the first client co-simulation unit, and a second child process is forked from the CC process of the second client co-simulation unit. Via inter-process communication from the CC process of the main co-simulation unit to the CC process of each of the first and second client co-simulation units, coordinated execution of a cycle-based simulator by the first child process and execution of an event-based simulator by the second child process is restarted. Execution of the cycle-based simulator is restarted from a cycle-based simulation checkpoint, and execution of the event-based simulator is restarted from an event-based simulation snapshot.
    Type: Application
    Filed: August 21, 2023
    Publication date: February 27, 2025
    Inventors: Ronald Cash, Walter Peter Kowalski, III, Nitin Pundir, Wolfgang Roesner
  • Patent number: 6989286
    Abstract: There is disclosed a method of manufacturing of optical devices, for example, semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and the like. There is further disclosed Optoelectronic Integrated Circuits (OEICs) and Photonic Integrated Circuits (PICs) including such devices. According to the present invention there is provided a method of manufacturing an optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well Intermixing (QWI) structure (30), the method including the step of plasma etching at least part of a surface of the device body portion (5) prior to depositing a dielectric layer (51) thereon so as to introduce structural defects at least into a portion (53) of the device body portion (5) adjacent the dielectric layer (51). The structural defects substanially comprise “point” defects.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: January 24, 2006
    Assignee: The University Court of the University of Glasgow
    Inventors: Craig James Hamilton, Olek Peter Kowalski, John Haig Marsh, Stewart Duncan McDougall
  • Publication number: 20040106224
    Abstract: There is disclosed a method of manufacturing of optical devices, for example, semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and the like. There is further disclosed Optoelectronic Integrated Circuits (OEICs) and Photonic Integrated Circuits (PICs) including such devices. According to the present invention there is provided a method of manufacturing an optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well Intermixing (QWI) structure (30), the method including the step of plasma etching at least part of a surface of the device body portion (5) prior to depositing a dielectric layer (51) thereon so as to introduce structural defects at least into a portion (53) of the device body portion (5) adjacent the dielectric layer (51). The structural defects substantially comprise “point” defects.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 3, 2004
    Inventors: Craig James Hamilton, Olek Peter Kowalski, John Haig Marsh, Stewart Duncan McDougall
  • Patent number: 6719884
    Abstract: A method of manufacturing an optical device, wherein the device body portion from which the device is to be made includes at least one Quantum Well, the method including the step of causing an impurity material including copper to intermix with the Quantum Well.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: April 13, 2004
    Assignee: Intense Photonics Limited
    Inventors: John Haig Marsh, Craig James Hamilton, Olek Peter Kowalski, Stuart Duncan McDougall, Xuefeng Liu, Bo-Cang Qui
  • Patent number: 6632684
    Abstract: There is disclosed an improved method of manufacturing of an optical device (40), particularly semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and optical detectors. The invention provides a method of manufacturing optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well (QW) structure (30), the method including the step of: processing the device body portion (15) so as to create extended defects at least in a portion (53) of the device portion (5). Each extended defect is a structural defect comprising a plurality of adjacent “point” defects.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: October 14, 2003
    Assignee: The University Court of The University of Glasgow
    Inventors: John Haig Marsh, Craig James Hamilton, Stuart Duncan McDougall, Olek Peter Kowalski
  • Publication number: 20030053789
    Abstract: There is disclosed an improved method of manufacturing an optical device using impurity induced Quantum Well Intermixing (QWI) process.
    Type: Application
    Filed: January 15, 2002
    Publication date: March 20, 2003
    Applicant: The University Court of the University of Glasgow
    Inventors: John Haig Marsh, Craig James Hamilton, Olek Peter Kowalski, Stuart Duncan McDougall, Xuefeng Liu, Bo-Cang Qui
  • Publication number: 20020137251
    Abstract: There is disclosed an improved method of manufacturing of an optical device (40), particularly semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and optical detectors. The invention provides a method of manufacturing optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well (QW) structure (30), the method including the step of: processing the device body portion (15) so as to create extended defects at least in a portion (53) of the device portion (5). Each extended defect is a structural defect comprising a plurality of adjacent “point” defects.
    Type: Application
    Filed: February 20, 2001
    Publication date: September 26, 2002
    Inventors: John Haig Marsh, Craig James Hamilton, Stewart Duncan McDougall, Olek Peter Kowalski
  • Publication number: 20020131668
    Abstract: There is disclosed a method of manufacturing of optical devices, for example, semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and the like. There is further disclosed Optoelectronic Integrated Circuits (OEICs) and Photonic Integrated Circuits (PICs) including such devices. According to the present invention there is provided a method of manufacturing an optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well Intermixing (QWI) structure (30), the method including the step of depositing a dielectric layer (51) on at least part of a surface of the device body portion (5) so as to introduce structural defects at least into a portion (53) of the device body portion (5) adjacent the dielectric layer (51). The structural defects substantially comprise “point” defects.
    Type: Application
    Filed: February 20, 2001
    Publication date: September 19, 2002
    Inventors: John Haig Marsh, Craig James Hamilton, Stewart Duncan McDougall, Olek Peter Kowalski
  • Patent number: 5206710
    Abstract: A method and apparatus for thermowave analysis employs a single laser beam, which has an additive, two-frequency, intensity modulation, and is directed onto the object. The amplitude of the mixed frequency of the discrete modulation frequencies, which is not contained in the exciting beam, is analyzed as response signal. By obtaining a reference signal from the exciting beam and forming the difference between this exciting beam and the measurement signal, noise suppression and a lowering of the limit of sensitivity are achieved in an advantageous manner.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: April 27, 1993
    Assignee: Jenoptik Jena GmbH
    Inventors: Hans-Dieter Geiler, Matthias Wagner, Peter Kowalski