Patents by Inventor Shu Yongjun

Shu Yongjun 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).

  • Fiberoptic reconfigurable devices with beam shaping for low-voltage operation
    Patent number: 7403677
    Abstract: An apparatus and method to operate on a light beam by using a lens that collimates the light beam to a collimated beam with at least one cross-sectional dimension less than a critical dimension of 400 ?m or less over a working range WR. The apparatus has a bulk electro-optic material of small thickness ?, e.g., less than 300 ?m positioned within working range WR and the collimated beam traverses it along its path. The apparatus has a voltage source for applying a low operating or drive voltage Vdrive, e.g. less than 400 V to the bulk electro-optic material for performing an operation on the collimated beam. The lens for collimating the light beam is a free-space collimator such as a graded index (GRIN) lens or preferably a C-lens. The apparatus is a versatile and scalable platform that can be employed in building various electro-optic devices.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: July 22, 2008
    Assignee: Agiltron, Inc.
    Inventors: Jing Zhao, Jin Guanghai, Shu Yongjun