Patents by Inventor Najabat Hasnain Bajwa

Najabat Hasnain Bajwa 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).

  • Systems and methods to control transimpedance amplifier
    Patent number: 10027286
    Abstract: A system to program parameters of one or more stages of a transimpedance amplifier (TIA) in an optical sub-assembly (e.g. TO-can package) is disclosed. With this invention, users have the option/flexibility to discretely program any of the stages of the TIA after production of the sub-assembly, i.e. they can still change the TIA settings once the TIA has been installed in a system and the system is in use.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: July 17, 2018
    Assignee: LITRINIUM, INC.
    Inventors: Najabat Hasnain Bajwa, Mikhail Barashenka, Hanqing Qian
  • Laser diode driving systems and methods
    Patent number: 9899797
    Abstract: A laser diode driving method that reliably maintains average optical power and extinction ratio is disclosed. The present invention for laser driving uses a preloaded laser diode characteristic curve/table and/or mathematical equations to create a programmable bias and modulation current range. This ensures stable closed-loop operation and prevents system failure if the feedback signal is impaired by confining the operation of the laser diode to a normal operating range.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: February 20, 2018
    Assignee: LITRINIUM, INC.
    Inventors: Najabat Hasnain Bajwa, Mikhail Barashenka, Hanqing Qian
  • SYSTEMS AND METHODS TO CONTROL TRANSIMPEDANCE AMPLIFIER
    Publication number: 20170338780
    Abstract: A system to program parameters of one or more stages of a transimpedance amplifier (TIA) in an optical sub-assembly (e.g. TO-can package) is disclosed. With this invention, users have the option/flexibility to discretely program any of the stages of the TIA after production of the sub-assembly, i.e. they can still change the TIA settings once the TIA has been installed in a system and the system is in use.
    Type: Application
    Filed: June 7, 2017
    Publication date: November 23, 2017
    Inventors: Najabat Hasnain Bajwa, Mikhail Barashenka, Hanqing Qian
  • LASER DIODE DRIVING SYSTEMS AND METHODS
    Publication number: 20170271844
    Abstract: A laser diode driving method that reliably maintains average optical power and extinction ratio is disclosed. The present invention for laser driving uses a preloaded laser diode characteristic curve/table and/or mathematical equations to create a programmable bias and modulation current range. This ensures stable closed-loop operation and prevents system failure if the feedback signal is impaired by confining the operation of the laser diode to a normal operating range.
    Type: Application
    Filed: March 16, 2017
    Publication date: September 21, 2017
    Inventors: Najabat Hasnain Bajwa, Mikhail Barashenka, Hanqing Qian