Patents by Inventor Xuechen HAN

Xuechen HAN 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).

  • Nanoseconds-pulse based current/voltage measurement for testing vertical-cavity surface-emitting laser
    Patent number: 11959945
    Abstract: Embodiments are presented herein of an open-loop test system for testing vertical-cavity surface-emitting lasers (VCSELs). A high-speed pulse generator may be used to produce nanoseconds pulses provided to the VCSEL device. A high-speed oscilloscope may be used to measure the resultant nanoseconds pulses across the VCSEL device. The VCSEL device voltage and VCSEL device current may be obtained from the measured nanosecond pulses according to compensation data derived from the system. A pre-test compensation procedure may be used to obtain the compensation data, which may include representative characteristics of each system component.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: April 16, 2024
    Assignee: National Instruments Corporation
    Inventors: Jun Lu, John George Banaska, Matthew Tate Dougan, Jeffrey Allan Cornell, Wendi Song, Xuechen Han, Kunal Harsad Patel
  • NANOSECONDS-PULSE BASED CURRENT/VOLTAGE MEASUREMENT FOR TESTING VERTICAL-CAVITY SURFACE-EMITTING LASER
    Publication number: 20230152355
    Abstract: Embodiments are presented herein of an open-loop test system for testing vertical-cavity surface-emitting lasers (VCSELs). A high-speed pulse generator may be used to produce nanoseconds pulses provided to the VCSEL device. A high-speed oscilloscope may be used to measure the resultant nanoseconds pulses across the VCSEL device. The VCSEL device voltage and VCSEL device current may be obtained from the measured nanosecond pulses according to compensation data derived from the system. A pre-test compensation procedure may be used to obtain the compensation data, which may include representative characteristics of each system component.
    Type: Application
    Filed: November 26, 2020
    Publication date: May 18, 2023
    Inventors: Jun LU, John George BANASKA, Matthew Tate DOUGAN, Jeffrey Allan CORNELL, Wendi SONG, Xuechen HAN, Kunal Harsad PATEL