Patents by Inventor Sergey V. Zaytsev

Sergey V. Zaytsev 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).

  • Wavelength-tunable semiconductor laser diode
    Patent number: 6459709
    Abstract: A wavelength-tunable distributed feedback (DFB) laser is disclosed where the lasing wavelength can be adjusted by adjusting the bias current of the laser diode. Since the output power of the laser diode also changes with the bias current, a one-to-one correspondence between the lasing wavelength and the output power of the laser can be established. Consequently, the lasing wavelength can be measured directly from the photocurrent of a power monitoring detector facing the back-end of the laser diode. This provides an extremely simple method for wavelength monitoring.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: October 1, 2002
    Assignee: Nova Crystals, Inc.
    Inventors: Yu-Hwa Lo, Steven Gregg Hummel, Chenting Lin, Chau-Hong Kuo, Mei-Ling Shek-Stefan, Sergey V. Zaytsev
  • Wavelength-tunable semiconductor laser diode
    Publication number: 20020101898
    Abstract: A wavelength-tunable distributed feedback (DFB) laser is disclosed where the lasing wavelength can be adjusted by adjusting the bias current of the laser diode. Since the output power of the laser diode also changes with the bias current, a one-to-one correspondence between the lasing wavelength and the output power of the laser can be established. Consequently, the lasing wavelength can be measured directly from the photocurrent of a power monitoring detector facing the back-end of the laser diode. This provides an extremely simple method for wavelength monitoring.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 1, 2002
    Applicant: Nova Crystals, Inc.
    Inventors: Yu-Hwa Lo, Steven Gregg Hummel, Chenting Lin, Chau-Hong Kuo, Mei-Ling Shek-Stefan, Sergey V. Zaytsev