Patents by Inventor Yu-Jhu Jhang

Yu-Jhu Jhang 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).

  • Fiber ring laser system and the operation method thereof
    Patent number: 8315281
    Abstract: A wavelength-tunable directly modulated fiber ring laser is provided. Generally speaking, the wavelength-tunable directly modulated fiber ring laser employs an RSOA (reflective semiconductor optical amplifier) and an OTF (optical tunable filter) to construct a novel ring resonant cavity. Additionally, a signal generator can be further employed to transmit modulated signals to the RSOA, whereby generating light wave with the modulated signals, so as to provide tunable wave-length and direct modulation at the same time.
    Type: Grant
    Filed: March 19, 2011
    Date of Patent: November 20, 2012
    Assignee: National Taiwan University of Science and Technology
    Inventors: Zih-Rong Lin, Cheng-Kuang Liu, Yu-Jhu Jhang, Gerd Keiser
  • Fiber Ring Laser System and the Operation Method thereof
    Publication number: 20120170600
    Abstract: A wavelength-tunable directly modulated fiber ring laser is provided. Generally speaking, the wavelength-tunable directly modulated fiber ring laser employs an RSOA (reflective semiconductor optical amplifier) and an OTF (optical tunable filter) to construct a novel ring resonant cavity. Additionally, a signal generator can be further employed to transmit modulated signals to the RSOA, whereby generating light wave with the modulated signals, so as to provide tunable wave-length and direct modulation at the same time.
    Type: Application
    Filed: March 19, 2011
    Publication date: July 5, 2012
    Applicant: National Taiwan University of Science and Technology
    Inventors: Zih-Rong LIN, Cheng-Kuang LIU, Yu-Jhu JHANG, Gerd KEISER