Patents by Inventor Steven K. Korotky

Steven K. Korotky 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).

  • Faser cavity optical memory with optical storage and readout
    Patent number: 4877952
    Abstract: This invention is an optical memory device in which data is written, stored and read out in optical form without any conversion to electronics. The functions performed such as readout, reset and the like can be via electronic means, optical means, or a combination of both. The inherent bistability/hysteresis which is required for the memory function is obtained with a laser structure which includes a saturable absorber and, as a portion of the cavity, a waveguide.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: October 31, 1989
    Assignees: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Thirumala R. Halemane, Steven K. Korotky
  • Low crosstalk reversed .DELTA..beta. electrodes for directional coupler switch
    Patent number: 4865408
    Abstract: Crosstalk for a directional coupler switch employing a reversed .DELTA..beta. electrode structure is reduced to a minimum by properly placing electrode sections over the waveguides to compensate interwaveguide coupling preceding an electrode section with interwaveguide coupling following the electrode section.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: September 12, 1989
    Assignees: American Telephone and Telegraph Company, AT&T Laboratories
    Inventor: Steven K. Korotky
  • Devices having low loss curved or tapered optical waveguides
    Patent number: 4787689
    Abstract: An optical device comprising an optical waveguide having a varying refractive index has low radiation loss. The waveguide may be either curved or tapered.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: November 29, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Steven K. Korotky, Enrique A. J. Marcatili
  • Composite cavity laser utilizing an intra-cavity electrooptic waveguide device
    Patent number: 4728168
    Abstract: Optical functions such as Q-switching, mode locking, cavity dumping, and modulation are generated by a simple laser arrangement which includes a gain medium and an electrically controllable, optical waveguide device optically coupled to the gain medium. The gain medium and waveguide device are either interposed between two reflective surfaces or coupled by a waveguide in order to form a single composite cavity laser structure.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: March 1, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Rodney C. Alferness, Gadi Eisenstein, Steven K. Korotky
  • Composite cavity laser utilizing an intra-cavity electrooptic waveguide device
    Patent number: 4667331
    Abstract: Optical functions such as Q-switching, mode locking, cavity dumping, and modulation are generated by a simple laser arrangement which includes a gain medium and an electrically controllable, optical waveguide device optically coupled to the gain medium. The gain medium and waveguide device are either interposed between two reflective surfaces or coupled by a waveguide in order to form a single composite cavity laser structure.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: May 19, 1987
    Assignee: AT&T Company and AT&T Bell Laboratories
    Inventors: Rodney C. Alferness, Gadi Eisenstein, Steven K. Korotky
  • Traveling wave electrooptic devices
    Patent number: 4553810
    Abstract: Prior art techniques for velocity matching the optical wave and the modulating electrical wave in traveling wave, electrooptic devices includes the use of phase reversals and intermittent interaction. This results in a device whose frequency response includes a single peak. It has been discovered that by reducing the length of the interaction intervals between the electrical and optical systems, a multiplicity of harmonically related frequency peaks can be obtained. Furthermore, by combining the phase reversal and intermittent interaction techniques in a common device, the available bandwidth can be doubled.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: November 19, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Rodney C. Alferness, Steven K. Korotky, Enrique A. J. Marcatili