Patents by Inventor Rongtang Fan

Rongtang Fan 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).

  • Small form factor variable optical attenuator with cladding mode suppressing fiber
    Patent number: 8737778
    Abstract: The invention relates to an electro-static variable optical attenuator suitable for use in a small form factor pluggable module. A short cladding suppressing fiber, such as a double clad optical fiber, dissipates attenuated light coupled to the cladding to reduce modal interference in the output light, while also reducing PDL and WDL introduced by the off set attenuation mechanism.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: May 27, 2014
    Assignee: JDS Uniphase Corporation
    Inventors: Zhongjian Wang, Michael Ayliffe, Qinrong Yu, Niki Liu, Rongtang Fan
  • SMALL FORM FACTOR VARIABLE OPTICAL ATTENUATOR WITH CLADDING MODE SUPPRESSING FIBER
    Publication number: 20130163923
    Abstract: The invention relates to an electro-static variable optical attenuator suitable for use in a small form factor pluggable module. A short cladding suppressing fiber, such as a double clad optical fiber, dissipates attenuated light coupled to the cladding to reduce modal interference in the output light, while also reducing PDL and WDL introduced by the off set attenuation mechanism.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 27, 2013
    Inventors: Zhongjian Wang, Michael Ayliffe, Qinrong Yu, Niki Liu, Rongtang Fan