Patents by Inventor Max Stellmacher

Max Stellmacher 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).

  • Compensation of the refractive index of doped InP
    Patent number: 6766092
    Abstract: A mode transformer (10) includes a passive waveguide (120) having a first composition co-existing with a second composition to provide a guided optical wave (250). A p-doped re-growth layer (130) having the first composition is disposed on top of the passive waveguide (120). A compensated n-doped buffer (110) is disposed underneath the passive waveguide (120). The compensated n-doped buffer (110) has the first composition and a sufficient concentration of a third composition such that the compensated n-doped buffer layer has a reduced index difference between the p-doped re-growth layer (130) and the compensated n-doped buffer layer (110) to compensate the index difference between the p-doped re-growth layer (130) and the originally un-compensated n-doped buffer in order to preserve the symmetry of the guided optical wave (250).
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: July 20, 2004
    Assignee: Corning Incorporated
    Inventor: Max Stellmacher
  • Compensation of the refractive index of doped InP
    Publication number: 20020028054
    Abstract: A mode transformer (10) includes a passive waveguide (120) having a first composition co-existing with a second composition to provide a guided optical wave (250). A p-doped re-growth layer (130) having the first composition is disposed on top of the passive waveguide (120). A compensated n-doped buffer (110) is disposed underneath the passive waveguide (120). The compensated n-doped buffer (110) has the first composition and a sufficient concentration of a third composition such that the compensated n-doped buffer layer has a reduced index difference between the p-doped re-growth layer (130) and the compensated n-doped buffer layer (110) to compensate the index difference between the p-doped re-growth layer (130) and the originally un-compensated n-doped buffer in order to preserve the symmetry of the guided optical wave (250).
    Type: Application
    Filed: June 21, 2001
    Publication date: March 7, 2002
    Inventor: Max Stellmacher