Patents by Inventor Xiaochen Meng

Xiaochen Meng 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).

  • Gas detection system using intracavity fiber laser with loop cavity having saturated absorption fiber
    Patent number: 9029819
    Abstract: A gas detection system with an inner ring cavity fiber laser using saturated absorption optical fiber is provided. The system comprising a ring fiber laser consisted of a pump source, a wavelength division multiplexer, a first active optical fiber, a first coupler, a fiber Bragg grating and a second coupler connected successively; an optical isolator coupled between said first active optical fiber and said first coupler; a second active grating connected between said fiber Bragg grating and said first coupler; a detection gas chamber connected between said first coupler and said second coupler; a first photoelectric detector for detecting the laser intensity outputted from said ring fiber laser to generate a first light intensity signal; a second photoelectric detector for receiving the intensity measuring beam passing through the detection gas chamber to generate a second light intensity signal; and a feedback control unit.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 12, 2015
    Assignee: Beijing Information Science & Technology University
    Inventors: Lianqing Zhu, Fei Luo, Mingli Dong, Wei He, Yinmin Zhang, Xiaochen Meng, Zhehai Zhou
  • GAS DETECTION SYSTEM USING INTRACAVITY FIBER LASER WITH LOOP CAVITY HAVING SATURATED ABSORPTION FIBER
    Publication number: 20150102240
    Abstract: A gas detection system with an inner ring cavity fiber laser using saturated absorption optical fiber is provided. The system comprising a ring fiber laser consisted of a pump source, a wavelength division multiplexer, a first active optical fiber, a first coupler, a fiber Bragg grating and a second coupler connected successively; an optical isolator coupled between said first active optical fiber and said first coupler; a second active grating connected between said fiber Bragg grating and said first coupler; a detection gas chamber connected between said first coupler and said second coupler; a first photoelectric detector for detecting the laser intensity outputted from said ring fiber laser to generate a first light intensity signal; a second photoelectric detector for receiving the intensity measuring beam passing through the detection gas chamber to generate a second light intensity signal; and a feedback control unit.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 16, 2015
    Inventors: Lianqing Zhu, Fei Luo, Mingli Dong, Wei He, Yinmin Zhang, Xiaochen Meng, Zhehai Zhou