Raytheon Company

Duane Donald Smith

Stephen P Palese

Gary D Coleman

C Thomas Hastings, Jr

John F Silny

Robert William Byren

David M Filgas

Adam M Kennedy

Joseph C Marron

Justin Gordon Adams Wehner

Moe Soltani

Alexander Niechayev

Edward Peter Gordon Smith

James Leatham

Thomas R Yengst

Virginia Smith

Amit Bhatia

Charley A Fodran

Jeffrey P Tate

C Thomas Hastings Jr

C Hastings

An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes an antenna element configured to transmit or receive optical signals having a linear polarization of light. Each unit cell also includes a modulator configured to phase-shift the optical signals transmitted or received by the antenna element. Each unit cell further includes a quarter waveplate configured to convert between the linear polarization of light and a circular polarization of light.

Photonic integrated circuit-based polarization-independent optical devices

An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes (i) an antenna element configured to transmit or receive optical signals and (ii) a phase modulator configured to modify phases of the optical signals being transmitted or received by the antenna element. The apparatus also includes a gyroscopic sensor configured to sense movement of the photonic integrated circuit, where at least a portion of the gyroscopic sensor is integrated within the photonic integrated circuit.

Photonic integrated circuit (PIC)-based optical phased array with integrated gyroscopic sensor

A device includes a photonic integrated circuit (PIC), which includes an optical phased array. The optical phased array includes multiple array elements, where each array element includes (i) an antenna element configured to transmit or receive optical signals and (ii) a phase modulator configured to modulate the optical signals transmitted or received by the antenna element. The PIC also includes at least one of (i) a source laser configured to generate optical energy, where the antenna elements are configured to transmit the optical signals based on the optical energy, and (ii) a receiver configured to receive and process the optical signals received by the antenna elements.

Photonic integrated circuit-based communication transmit/receive system

A scene projector including an array of light emitting pixels, a tunable filter element, and a spatial light modulator. The tunable filter element is optically coupled to the array of light emitting pixels such that light emitted from the array of light emitting pixels is passed through the tunable filter element as filtered light. The spatial light modulator is optically coupled to the array of light emitting pixels and is configured to generate transmitted light by interacting with the filtered light to control at least one of an amplitude, a phase, and a polarization of the filtered light.

Infrared scene projector with per-pixel spectral and polarisation capability

Method and apparatus for measuring a Doppler effect of a scattered light include: projecting an ultra violet (UV) light towards a target by a light emitter; receiving the UV light scatter from the target from the emitted UV light reflected from the target by a light receiver; measuring the frequency shift of the UV light scatter with respect to the emitted UV light to obtain distribution of line of sight velocity of macroscopic matters of the target corresponds to a Doppler shift; processing the distribution of the line of sight velocity to determine the Doppler effect of the UV light scatter; and separating the wind line of sight velocity as the centroid shift of the microscopic Doppler shift probability distribution.

System and method for measuring doppler effect utilizing elastic and inelastic light scattering

A free space optical communication system () and method including a constellation of several satellites (). Each of satellites including: several inter-satellite optical telescopes () for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle to accommodate changes in the number of satellites in the constellation; and several up/down link optical telescopes () for optical communication with multiple ground sites, where each ground site has several ground optical telescopes. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry () for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.

High-bandwidth optical communications relay architecture

A free space optical communication system () and method including: several optical beam expanders () for receiving incoming optical signals from ground sites and neighboring satellites; several optical preamplifiers () for preamplifying the received optical signals; one or more optical main amplifiers () for amplifying the preamplified optical signals; and an optical switch () for directing respective amplified optical signals to respective destinations via a respective optical beam expander. The respective amplified optical signals are inputted to a respective optical beam expander () for transmission to said respective destinations, as outgoing optical signals.

High-bandwidth optical communications relay payload

A weapon-locating ladar system estimates a backward trajectory of an airborne target by using flow field measurements to follow the wake turbulence trailing the airborne target from a position at which the target is detected backwards until the wake is no longer observable. The system may use the backward trajectory to estimate the point-of-origin of the target. The system may also use the flow field measurements along the backward trajectory to classify the target. Target classification may be used to refine the point-of-origin estimate, to influence counter-fire or to adapt the flow field measurements.

Ladar backtracking of wake turbulence trailing an airborne target for point-of-origin estimation and target classification

A free space optical communication system () and method including a constellation of several satellites (). Each of satellites including: several inter-satellite optical telescopes () for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle; and several up/down link optical telescopes () for optical communication with multiple ground sites. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry () for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.

Growing community of inventors

Rancho Palos Verdes, CA, United States of America

Duane Donald Smith