Abstract: Imaging systems and method of optical imaging. One example of an imaging system includes an optical scanning subsystem including an optical source and a waveguide, the waveguide being configured to direct optical radiation generated by the optical source over an area of a scene, a detection subsystem including an optical sensor configured to collect reflected optical radiation from the area of the scene, and a fused fiber focusing assembly including a fused fiber bundle, a plurality of lenses coupled together and positioned to receive and focus the reflected optical radiation from the area of the scene directly onto the fused fiber bundle, a microlens array interposed between the fused fiber bundle and the optical sensor and positioned to receive the reflected optical radiation from the fused fiber bundle, and a focusing lens positioned to direct the reflected optical radiation from the microlens array onto the optical sensor.

Abstract: A dispersive optical element includes a substrate including a dielectric material, an optical coating arranged on the substrate, and a layer of material including a microscale feature arranged directly on the optical coating.

Abstract: Aspects and embodiments are generally directed to active imaging systems and methods. In one example, an active imaging system includes a positioning system configured to detect a direction of motion of the imaging system relative to a scene, an optical source positioned to emit electromagnetic radiation, a non-mechanical beamsteering device positioned to receive the electromagnetic radiation from the optical source and configured to scan the electromagnetic radiation over at least a first portion of the scene within an instantaneous field-of-view of an optical receiver, and the optical receiver positioned to receive reflections of the electromagnetic radiation from at least the first portion of the scene within the instantaneous field-of-view, wherein the first portion of the scene is within a first edge region of the instantaneous field-of-view of the optical receiver, the first edge region being in the direction of motion of the imaging system.

Abstract: Optical systems and methods for object detection and location. One example of an optical system includes a laser radar optical source positioned to emit a pulsed laser beam, a non-mechanical beamsteering device positioned to scan the beam in a linear scan over a first area of a scene, a laser radar detector positioned to receive and integrate a reflection of the beam, a read-out integrated circuit (ROIC) configured to provide a first read-out signal based on the integrated reflection, and a controller configured to receive the first read-out signal, determine a range to the first area based on a time of flight of the pulsed laser beam, and identify a presence of an object within the scene based on a signal level of the first read-out signal, the first signal level corresponding to a reflectivity of a portion of the object within the first area of the scene.

Abstract: Aspects are generally directed to an inter-satellite communication system and method of communicating between satellites. In one example, an inter-satellite communication system includes a first satellite transceiver having an entrance aperture, and a non-mechanical beamsteering device configured to steer a first beam of encoded optical data over a field of view thereof. The first satellite transceiver may include coarse steering optics configured to extend a field of regard of the non-mechanical beamsteering device. During a transmit mode, the coarse steering optics are positioned to transmit the first beam of encoded optical data through the entrance aperture in a direction of a second satellite transceiver. The first satellite transceiver may also include a beam splitter positioned, during a receive mode, to receive a second beam of encoded optical data from the second satellite transceiver and direct the second beam of encoded optical data to an optical sensor.

Abstract: A multiple target tracker and beam steerer utilizes liquid crystal waveguide (LCWG) beam steering to illuminate multiple tracked targets per frame one target at a time for designation, range finding or active imaging. The steering rate and range afforded by the LCWG supports various tracker configurations (out-of-band, in-band or dual-band video cameras), LADAR detectors (single pixel or pixelated) and prioritization of tracked targets to vary the revisit rate or dwell time for an illuminated target. A user interface accepts commands from an operator to select the targeting mode, control cue-box size and position within the FOV and target selection.

Abstract: Aspects and embodiments are generally directed to optical systems, receivers, and methods. In one example, an optical receiver includes a plurality of fused fiber optic bundles, at least a first fused fiber optic bundle of the plurality of fused fiber optic bundles positioned to collect optical radiation from a scene, a multi-mode fiber optic cable coupled to each fused fiber optic bundle of the plurality of fused fiber optic bundles, the multi-mode fiber optic cable configured to propagate the collected optical radiation from each of the plurality of fused fiber optic bundles along a length of the multi-mode fiber optic cable, and a photo-detector coupled to the multi-mode fiber optic cable and configured to receive the collected optical radiation. A field of view of each fused fiber optic bundle of the plurality of fused fiber optic bundles may collectively define a substantially omnidirectional field of view of the photo-detector.

Abstract: Embodiments of a computing device and optical data switching circuitry are generally described herein. A processing element of the optical data switching circuitry may generate a plurality of optical data signals, and may send the optical data signals to an optical switch of the optical data switching circuitry. The optical switch may transmit the optical signals to a fiber optic router for relay to different destinations. The optical switch may switch between transmission directions for transmission of the optical signals to different receiving ports of the fiber optic router. The receiving ports of the fiber optic router may be mapped to the different destinations, in some cases.

Abstract: A ring amplifier amplifies one or more spot-beams that scan a circular pattern in a two-dimensional FOV to extend the range of range steerable laser transmitter or an active situational sensor. Mechanical, solid-state or optical phase array techniques may be used to scan the spot-beam(s) in the circular pattern. Mirrors are preferably positioned to redirect the spot-beams to enter and exit the ring amplifier through sidewalls to amplify the spot-beam and return it along a path to scan the circular pattern. For efficiency, the pumps and thermal control may be synchronized to the circular scan pattern to only pump and cool the section of gain medium in which the spot-beam is currently scanned and the next section of gain medium in the circular scan pattern.

Abstract: A multiple target tracker and beam steerer utilizes liquid crystal waveguide (LCWG) beam steering to illuminate multiple tracked targets per frame one target at a time for designation, range finding or active imaging. The steering rate and range afforded by the LCWG supports various tracker configurations (out-of-band, in-band or dual-band video cameras), LADAR detectors (single pixel or pixelated) and prioritization of tracked targets to vary the revisit rate or dwell time for an illuminated target. A user interface accepts commands from an operator to select the targeting mode, control cue-box size and position within the FOV and target selection.

Abstract: A situation awareness sensor includes a plurality of N sensor channels, each channel including an optical phased array (OPA) having a plurality of solid-state laser emitters, a command circuit and a detector. The command circuit controls the relative phase between the laser emitters to command a divergence, shape and exit angle of a spot-beam to scan a channel field-of-view (FOV). The OPAs may be controlled individually or in combination to command one or more spot-beams to scan an aggregate sensor FOV and to track one or more objects.

Abstract: A system for providing active refraction feedback for devices with a variable index of refraction includes a reference beam generator and an altered reference beam sensor. The reference beam generator is configured to generate a reference beam and to apply the reference beam to a variable-index-of-refraction (VIR) device. The VIR device is configured to generate an altered reference beam based on the reference beam and based on an index of refraction for the VIR device. The altered reference beam sensor is configured to detect the altered reference beam and to sense a characteristic of the altered reference beam corresponding to the index of refraction.

Abstract: According to one aspect, embodiments herein provide a non-imaging optical system including a focusing optical element positioned within an input optical path to receive electromagnetic radiation, a micro-mirror array including a plurality of micro-mirror pixels positioned within the input optical path, individual micro-mirror pixels of the plurality of micro-mirror pixels being positioned to receive electromagnetic radiation from the focusing optical element and redirect electromagnetic radiation along a redirected optical path, a relay optical element positioned within the redirected optical path to receive and focus electromagnetic radiation from the micro-mirror array, and a single-pixel non-imaging detector positioned to receive electromagnetic radiation from the relay optical element.

Abstract: Aspects and embodiments are generally directed to active imaging systems and methods. In one example, an active imaging system includes a positioning system configured to detect a direction of motion of the imaging system relative to a scene, an optical source positioned to emit electromagnetic radiation, a non-mechanical beamsteering device positioned to receive the electromagnetic radiation from the optical source and configured to scan the electromagnetic radiation over at least a first portion of the scene within an instantaneous field-of-view of an optical receiver, and the optical receiver positioned to receive reflections of the electromagnetic radiation from at least the first portion of the scene within the instantaneous field-of-view, wherein the first portion of the scene is within a first edge region of the instantaneous field-of-view of the optical receiver, the first edge region being in the direction of motion of the imaging system.

Abstract: An obstacle detector configured to identify negative obstacles in a vehicle's path responsive to steering a laser beam to scan high priority areas in the vehicle's path is provided. The high priority areas can be identified dynamically in response to the terrain, speed, and/or acceleration of the vehicle. In some examples, the high priority areas are identified based on a projected position of the vehicles tires. A scan path for the laser, scan rate, and/or a scan location can be dynamically generated to cover the high priority areas.

Abstract: An identification patch having a plasmonic resonance structure may be used to ensure that an article is counterfeit-proof. The identification patch may be formed by a printing process, such as roll-to-roll printing or nanoimprinting, to create a distinctive ordered pattern of resonance elements. When the plasmonic resonance structure is irradiated, the ordered pattern of resonance elements produces a unique spectral response that is associated only with the counterfeit-proof article. The counterfeit-proof article may be a metal component or an integrated circuit. The resonant absorption of the plasmonic resonance structure may be measured to verify the authenticity of the article before use of the article.

Abstract: An active situational sensor achieves SWaP-C and SNR improvements by using a liquid crystal waveguide to steer a spot-beam onto a conical shape of a fixed mirror, which redirects the spot-beam to scan a FOV. The sensor may rapidly scan a 360° horizontal FOV with a specified vertical FOV or any portion thereof, jump discretely between multiple specific objects per frame, vary the dwell time on an object or compensate for other external factors to tailor the scan to a particular application or changing real-time conditions. The sensor can be used to provide object intensity or ranging in complex, dynamic systems such as aviation, air traffic control, ship navigation, unmanned ground vehicles, collision avoidance, object targeting etc.

Abstract: A steerable laser transmitter and situational awareness sensor uses a liquid crystal waveguide (LCWG) to steer a spot-beam onto a conical mirror, which in turn redirects the spot-beam to scan a FOV. The spot-beam passes through one or more annular sections of non-linearly material (NLM) formed along the axis and around the conical mirror. Each NLM section converts the wavelength of the spot-beam to a different wavelength while preserving the steering of the spot-beam. The LCWG may shape or move the spot-beam along the axis of the conic mirror to sequentially, time or time and spatially multiplex the spot-beam between the original and different wavelengths. This provides multispectral capability from a single laser source. The transmitter also supports steering the spot-beam at a wavelength at which the LCWG cannot steer directly.

Abstract: Embodiments of a computing device and optical data switching circuitry are generally described herein. A processing element of the optical data switching circuitry may generate a plurality of optical data signals, and may send the optical data signals to an optical switch of the optical data switching circuitry. The optical switch may transmit the optical signals to a fiber optic router for relay to different destinations. The optical switch may switch between transmission directions for transmission of the optical signals to different receiving ports of the fiber optic router. The receiving ports of the fiber optic router may be mapped to the different destinations, in some cases.

Abstract: An identification patch having a plasmonic resonance structure may be used to ensure that an article is counterfeit-proof. The identification patch may be formed by a printing process, such as roll-to-roll printing or nanoimprinting, to create a distinctive ordered pattern of resonance elements. When the plasmonic resonance structure is irradiated, the ordered pattern of resonance elements produces a unique spectral response that is associated only with the counterfeit-proof article. The counterfeit-proof article may be a metal component or an integrated circuit. The resonant absorption of the plasmonic resonance structure may be measured to verify the authenticity of the article before use of the article.