Patents by Inventor Amy Wong

Amy Wong 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).

  • Erbium-doped planar optical device
    Patent number: 5119460
    Abstract: An active optical device comprises a glass, waveguiding structure disposed on a substantially planar principal surface of a substrate. The structure includes a silica-based, erbium-doped active core. The active core has an erbium-to-silicon atomic ratio of at least about 0.01, an absolute erbium concentration of at least about 1.4.times.10.sup.20 atoms per cubic centimeter, and a radiative lifetime of the erbium lasing level of at least about 7 milliseconds. Also disclosed is a method for forming an active optical device, including the step of depositing an erbium-doped active core by sputtering.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: June 2, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Allan J. Bruce, Joseph Shmulovich, Amy Wong, Yiu-Huen Wong