Patents by Inventor Anastasios P. Goutzoulis

Anastasios P. Goutzoulis 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).

  • Patent number: 10447409
    Abstract: An optically-downconverting channelizer is disclosed for W-band detection. The channelizer includes an input waveguide configured to carry an inputted signal having a plurality of wavelengths including a desired wavelength and a plurality of ring resonators arranged in parallel and coupled at spaced apart locations along the input waveguide for receiving the inputted signal, wherein each of the plurality of ring resonators is configured to pass a selected wavelength signal to an output end. The channelizer further includes a control waveguide that carries a second signal having a wavelength that differs from the desired wavelength by a predetermined amount, and a plurality of detectors coupled to respective output ends of the ring resonators, the plurality of detectors configured to produce channelized RF output signals representative of desired RF bands.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: October 15, 2019
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Anastasios P Goutzoulis, Doyle T Nichols
  • Publication number: 20190229815
    Abstract: An optically-downconverting channelizer is disclosed for W-band detection. The channelizer includes an input waveguide configured to carry an inputted signal having a plurality of wavelengths including a desired wavelength and a plurality of ring resonators arranged in parallel and coupled at spaced apart locations along the input waveguide for receiving the inputted signal, wherein each of the plurality of ring resonators is configured to pass a selected wavelength signal to an output end. The channelizer further includes a control waveguide that carries a second signal having a wavelength that differs from the desired wavelength by a predetermined amount, and a plurality of detectors coupled to respective output ends of the ring resonators, the plurality of detectors configured to produce channelized RF output signals representative of desired RF bands.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: Anastasios P. Goutzoulis, Doyle T. Nichols
  • Patent number: 9880365
    Abstract: Interconnect systems for coupling a first system operating in a first type of environment (e.g., a cryogenic environment) to a second system operating in a second type of environment (e.g., a non-cryogenic environment) are provided. An interconnect system includes a first connector coupled to optical fibers that are coupled to the first system operating in the first type of environment. The interconnect system further includes a second connector coupled to optical fibers that are coupled to the second system operating in the second type of environment. The interconnect system may include an optical window configured to couple optical signals between the optical fibers, and the optical window is configured to maintain a vacuum seal between the first type of environment and the second type of environment such that the first type of environment is substantially thermally isolated from the second type of environment.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 30, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Anastasios P. Goutzoulis, Leonard Chorosinski, Mario J. Venetos
  • Publication number: 20170123171
    Abstract: Interconnect systems for coupling a first system operating in a first type of environment (e.g., a cryogenic environment) to a second system operating in a second type of environment (e.g., a non-cryogenic environment) are provided. An interconnect system includes a first connector coupled to optical fibers that are coupled to the first system operating in the first type of environment. The interconnect system further includes a second connector coupled to optical fibers that are coupled to the second system operating in the second type of environment. The interconnect system may include an optical window configured to couple optical signals between the optical fibers, and the optical window is configured to maintain a vacuum seal between the first type of environment and the second type of environment such that the first type of environment is substantially thermally isolated from the second type of environment.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 4, 2017
    Inventors: Anastasios P. Goutzoulis, Leonard Chorosinski, Mario J. Venetos
  • Publication number: 20140376921
    Abstract: An optically-downconverting channelizer is disclosed for W-band detection. The channelizer includes an input waveguide configured to carry an inputted signal having a plurality of wavelengths including a desired wavelength and a plurality of ring resonators arranged in parallel and coupled at spaced apart locations along the input waveguide for receiving the inputted signal, wherein each of the plurality of ring resonators is configured to pass a selected wavelength signal to an output end. The channelizer further includes a control waveguide that carries a second signal having a wavelength that differs from the desired wavelength by a predetermined amount, and a plurality of detectors coupled to respective output ends of the ring resonators, the plurality of detectors configured to produce channelized RF output signals representative of desired RF bands.
    Type: Application
    Filed: June 21, 2013
    Publication date: December 25, 2014
    Inventors: Anastasios P. Goutzoulis, Doyle T. Nichols
  • Patent number: 7783994
    Abstract: A system and a method for providing secure and trusted application specific integrated circuits (ASICs) using three-dimensional (3D) integrated circuit (IC) integration. The method includes fabricating a plurality of sub-circuits and assembling an overall 3D ASIC device from the plurality of sub-circuits. Each sub-circuit includes a plurality of input-output (IO) pads, is fabricated with a orientation point that indicates a compass orientation of the sub-circuit, and is rotationally symmetrical. The assembling includes determining the designed sub-circuit integration order, determining the designed orientation for each sub-circuit, stacking each sub-circuit per the determined integration order, and orienting each sub-circuit per the determined orientation, and wherein function and operation of the overall 3D ASIC device is determinable only from the assembled 3D ASIC stack and not the sub-circuits.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 24, 2010
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Harold Hasely Ball, Michael Robert Lucas, Anastasios P. Goutzoulis
  • Patent number: 7421168
    Abstract: A signal channelizer (10) includes an input waveguide (14) carrying an inputted signal (20) having a plurality of wavelengths. The input waveguide (14) has an input port (22) for receiving the inputted signal (20). A plurality of ring resonators (12) for wavelength selection are arranged in parallel and coupled along the input waveguide (14) for receiving the inputted signal (20) from the input waveguide (14). The plurality of ring resonators (12) passes a selected wavelength signal to their respective output end (56). An output waveguide (16) passes a desired signal from one or more ring resonators (12). The output waveguide (16) is tapped with couplers (46) for providing a desired signal to feed the output end (56). A detector (32) associated with the output end (56) of each ring resonators (12) produces the desired RF output signal (34) representative of the desired RF band.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: September 2, 2008
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Anastasios P. Goutzoulis
  • Publication number: 20080148073
    Abstract: A system and a method for providing secure and trusted application specific integrated circuits (ASICs) using three-dimensional (3D) integrated circuit (IC) integration. The method includes fabricating a plurality of sub-circuits and assembling an overall 3D ASIC device from the plurality of sub-circuits. Each sub-circuit includes a plurality of input-output (IO) pads, is fabricated with a orientation point that indicates a compass orientation of the sub-circuit, and is rotationally symmetrical. The assembling includes determining the designed sub-circuit integration order, determining the designed orientation for each sub-circuit, stacking each sub-circuit per the determined integration order, and orienting each sub-circuit per the determined orientation, and wherein function and operation of the overall 3D ASIC device is determinable only from the assembled 3D ASIC stack and not the sub-circuits.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Harold Hasely Ball, Michael Robert Lucas, Anastasios P. Goutzoulis
  • Patent number: 7362923
    Abstract: The present invention provides systems and methods for measuring signal phase shift caused by changes in fiber length.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: April 22, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Jonathan D. Egan, Anastasios P. Goutzoulis
  • Publication number: 20080031563
    Abstract: The present invention provides systems and methods for measuring signal phase shift caused by changes in fiber length.
    Type: Application
    Filed: August 7, 2006
    Publication date: February 7, 2008
    Applicant: Northrop Grumman Corporation
    Inventors: Jonathan D. Egan, Anastasios P. Goutzoulis
  • Patent number: 7298464
    Abstract: A method for determining the phase noise of a fiber optic cable includes a step of transmitting a reference signal and a test signal over the fiber optic cable to be tested. The reference and test signal are provided with different wavelengths. The phase noise of the fiber optic cable is calculated by comparing the reference signal and the test signal output from the fiber optic cable.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: November 20, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Jonathan D. Egan, Anastasios P. Goutzoulis
  • Patent number: 5751242
    Abstract: A signal manifold having a source signal converter coupled to an RF source for converting a source electronic signal from the RF source into an optical signal. The manifold has an optical coupler, having multiple optical fibers, coupled to the first signal converter; and a sink signal converter coupled to the optical coupler. The sink signal converter converts the optical signal from the coupler into a sink electronic signal and conveys that electronic signal to an RF sink.The manifold can be a transmit manifold, or a receive manifold. In addition, a transmit manifold and a receive manifold can be combined to provide a bi-directional signal manifold. The invention herein also provides low-loss asymmetric fiber-optic combiner which includes multiple optical fibers, each fiber having cladding removed from the respective fiber end, exposing the fiber core. The cores are joined together in a predefined configuration and each are optically coupled to a plenum optical fiber.
    Type: Grant
    Filed: September 30, 1995
    Date of Patent: May 12, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Anastasios P. Goutzoulis, John M. Zomp
  • Patent number: 5305009
    Abstract: An improved phased array radar system has a plurality of bias binary fiber optic delay lines each connected between the transmit/receive cells and at least one of signal input means and signal processing means. A plurality of electronic binary delay lines are connected to at least one of the signal input means and the signal processing means and each bias binary fiber optic delay line.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: April 19, 1994
    Assignee: Westinghouse Electric Corp.
    Inventors: Anastasios P. Goutzoulis, David K. Davies, Casey J. Coppock, John M. Zomp
  • Patent number: 5297273
    Abstract: An optical architecture for receiving and slowing down high-speed data for high-speed digital testing applications is provided in which an input generating means transmits high-speed input test vectors to an apparatus under testing. In response, the apparatus under testing generates output test vectors. These high speed output test vectors are converted to slow-speed data signals by optically demultiplexing the high-speed vectors into high-speed parallel data signals and then expanding the parallel data signals to for slow-speed data signals. The slow-speed data signals are then compared with slow-speed reference vectors on a personal computer to determine whether the apparatus under testing is in error for any of its output channels.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: March 22, 1994
    Assignee: Westinghouse Electric Corp.
    Inventors: Anastasios P. Goutzoulis, Peter J. Chantry, Tom Henningsen
  • Patent number: 5291569
    Abstract: A fiberoptic delay line architecture for generating multiple replicas of an input RF signal with variable replica-to-replica time resolution is provided in which the required hardware is kept to a minimum. A series of cascaded binary fiberoptic segment delay lines is used in which each cascaded binary fiberoptic segment delay line has an equal and defined number of segments but variable minimum time resolution. The minimum time resolution of each cascaded binary fiberoptic segment delay line increases by a multiple of two compared to the prior cascaded binary fiberoptic segment delay line. In this manner, the required number of segments and switches increases in a log.sub.2 .times.log.sub.2 relationship as the number of desired replicas and possible replica-to-replica delay values increases.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: March 1, 1994
    Assignee: Westinghouse Electric Corp.
    Inventors: Anastasios P. Goutzoulis, David K. Davies
  • Patent number: 5177630
    Abstract: An optical architecture is provided that can be used for generating high-speed input test vectors from low speed digital data and transferrring those test vectors to a device under test. The optical architecture employs gain-switched laser diodes or optical mixers to produce high-speed optical pulses from the low speed digital data. Optical multiplexing and variable delay devices process the high speed optical pulses to form a high-speed test vector. The architecture can generate test data with psec-type accuracy.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: January 5, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: Anastasios P. Goutzoulis, Peter J. Chantry, Tom Henningsen
  • Patent number: 5125051
    Abstract: A wavelength-coded binary fiberoptic delay line apparatus for time steering of array antennas having a plurality of delay line units serially connected to each other to provide a plurality of delay signals. Signal detecting/converting units which are connected respectively between adjacent delay line units wavelength-code the delay signals passing between the delay line units. The input signal to each delay line unit is separated into two signals one of which is connected to the output of that delay line unit.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: June 23, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Anastasios P. Goutzoulis, David K. Davies
  • Patent number: 5103495
    Abstract: A partitioned optical delay line apparatus for time-steering large array antenna converting microwave signals to optical signals which are optically delayed in binary programmable fiberoptic delay lines to provide a number of output signal delay sets.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: April 7, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Anastasios P. Goutzoulis
  • Patent number: 5101455
    Abstract: A recirculating binary fiberoptic delay line apparatus having a programmable optical delay line to delay multiplexed optical signals which are at different wavelengths. An optical demultiplexer separates the delayed multiplexed signals according to wavelength and provides two portions of each separated signal. One portion is applied to the elements of an array antenna and the other portion is detected by wavelength in a detector bank to obtain the delay modulation signal which modulates laser diodes, each at a different optical wavelength, in a laser diode bank to provide a number of delayed optical signals at different wave-lengths. The delayed optical signals are multiplexed together and applied to the optical delay line for recirculation through the apparatus to generate a greater number of delay signals.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: March 31, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Anastasios P. Goutzoulis
  • Patent number: 5066088
    Abstract: A fiberoptic-coupled free-space variable delay line is provided wherein the phase adjustment of the signal can be accurately set. A microscope-objective lens collimates a signal beam which is received by a focusing lens. The focusing lens is provided on an adjustable carrier to allow one to accurately adjust the distance travelled by the collimated signal base and thereby accurately adjust the off-set. A plurality of these variable delay lines can be arranged to form a multiplexer. If the threads on each drive rod moving a carrier are different, the carrier can be adjusted to accommodate changes in frequency of the signal.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: November 19, 1991
    Assignee: Westinghouse Electric Corp.
    Inventors: David K. Davies, Peter J. Chantry, Anastasios P. Goutzoulis