Patents by Inventor Daniel R. Kaplan

Daniel R. Kaplan 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).

  • Tranverse mode control in solid state lasers
    Patent number: 4870649
    Abstract: A reflection filter is disposed on a solid state laser so as to preferentially reflect TE or TM modes and to suppress oscillation within the resonator of the non-reflected modes. In one embodiment, the filter includes a layer having a plurality of grooves which may be straight and parallel or curved to approximate the mode shape. In another embodiment, the filter includes a polarization sensitive film, without grooves, which either absorbs or transmits the undesired mode. Specifically described is a buried heterostructure semiconductor DFB laser with such a reflection filter formed on at least one facet thereof.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: September 26, 1989
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Andrew H. Bobeck, Lloyd R. Harriott, Robert L. Hartman, Daniel R. Kaplan, George J. Przybylek, William J. Tabor
  • Aligning arrays of optoelectronic devices to arrays of optical fibers
    Patent number: 4730198
    Abstract: Linear arrays of optical fibers are aligned to linear arrays of optoelectronic devices (e.g., photodiodes, diode lasers or LEDs) formed on an elongated chip. The alignment procedure results in a subassembly which includes fiber segments embedded between V-groove mounting blocks and the device array chip affixed to an end face of the blocks.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: March 8, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Michael G. Brown, Stephen R. Forrest, Daniel R. Kaplan, Paul A. Kohl, Yusuke Ota, Harvey S. Trop