Patents by Inventor Cyril Guintrand

Cyril Guintrand 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).

  • Method and apparatus for polarization determination and/or control in optical fiber amplifying systems
    Patent number: 9819143
    Abstract: Methods and apparatuses for determining the polarization state and for providing polarization control in optical fiber lasers and amplifiers. One embodiment of the invention is an optical fiber amplifying system including a circulator (260) having a first optical port (260a), a second optical port (260b) that is configured to output radiation received from the first optical port, and a third optical port (260c) that is configured to output radiation received from the second optical port; one or more amplifier stages (216) connected in series, together having an optical input (216a) optically coupled to the second port of the circulator, and an optical output (216b); and a polarization detector (240) having an optical input optically coupled to the third port of the circulator. Thereby the polarization state of the amplified radiation can be determined using radiation backscattered from the amplifying stage.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: November 14, 2017
    Assignee: Nufern
    Inventors: Peyman Ahmadi, Imtiaz Majid, Cyril Guintrand
  • Method and Apparatus for Polarization Determination and/or Control in Optical Fiber Amplifying Systems
    Publication number: 20160141828
    Abstract: Methods and apparatuses for determining the polarization state and for providing polarization control in optical fiber lasers and amplifiers. One embodiment of the invention is an optical fiber amplifying system including a circulator (260) having a first optical port (260a), a second optical port (260b) that is configured to output radiation received from the first optical port, and a third optical port (260c) that is configured to output radiation received from the second optical port; one or more amplifier stages (216) connected in series, together having an optical input (216a) optically coupled to the second port of the circulator, and an optical output (216b); and a polarization detector (240) having an optical input optically coupled to the third port of the circulator. Thereby the polarization state of the amplified radiation can be determined using radiation backscattered from the amplifying stage.
    Type: Application
    Filed: June 23, 2014
    Publication date: May 19, 2016
    Inventors: Peyman Ahmadi, Imtiaz Majid, Cyril Guintrand