Abstract: An optical communication system is provided with a sequence of diffraction gratings interposed between an external signal pathway and both an internal transmitting unit and an internal receiving unit. A plurality of diffraction gratings arranged into the sequence define a reciprocal optical directional filter. The diffraction gratings, transmitting unit, receiving unit and external signal pathway are arranged such that the transmitted signals from the transmitting unit are transmitted through the sequence of gratings to the external signal pathway based on the wavelength and angle of incidence of the transmitted signals and the received signals from the external signal pathway are transmitted through the sequence of gratings to the receiving unit based on the wavelength and angle of incidence of the received signals. The gratings can be volume Bragg gratings formed within a solid transparent volume interposed between the external signal pathway, the internal transmitting unit and the internal receiving unit.

Abstract: A method and system for initiating message listening and routing message content to authorized user devices is disclosed. For a second user device to receive notifications regarding records of a first user, the second user device provides information identifying the first user to a notification service. The notification service verifies the identifying information. The notification service initiates one or more listeners to listen for messages flowing over a messaging bus that are relating to the first user. Once a message is identified, at least a portion of the message is used to generate a notification that may be sent to the second user device.

Abstract: An optical system includes an optical transmitter coupled to a signal transmitting path, an optical receiver coupled to a signal receiving path, and a phase plate array configured to couple a first portion of an optical beam to a first single-mode fiber and to couple other portions of the optical beam to a plurality of other single-mode fibers. The first portion of the optical beam corresponds to a fundamental optical mode and the other portions corresponds to a plurality of higher-order optical modes. The first single-mode fiber is coupled to both the signal transmitting path and the signal receiving path using an optical circulator, and the plurality of other single-mode fibers are coupled to the signal receiving path.

Abstract: An optical communication system using a photonic lantern for fine point tracking is disclosed. The optical communication system may comprise a photonic lantern, a signal processing unit including one or more fiber splitters to sample a fraction of a received signal in each single mode fiber of the photonic lantern, and one or more intensity sensors positioned in one arm of each fiber splitter, and used for monitoring fiber-specific intensity data associated with each of the single-mode fibers. The system may further include a fine pointing assembly and a controller for controlling a driver of the fine pointing assembly.

Abstract: An optical communication system is provided with a sequence of diffraction gratings interposed between an external signal pathway and both an internal transmitting unit and an internal receiving unit. A plurality of diffraction gratings arranged into the sequence define a reciprocal optical directional filter. The diffraction gratings, transmitting unit, receiving unit and external signal pathway are arranged such that the transmitted signals from the transmitting unit are transmitted through the sequence of gratings to the external signal pathway based on the wavelength and angle of incidence of the transmitted signals and the received signals from the external signal pathway are transmitted through the sequence of gratings to the receiving unit based on the wavelength and angle of incidence of the received signals. The gratings can be volume Bragg gratings formed within a solid transparent volume interposed between the external signal pathway, the internal transmitting unit and the internal receiving unit.

Abstract: A system for optical communication and weather measurement is provided. The system includes a shared telescope used to collect and focus laser beams. The optical communication system includes an optical communication transceiver and optical communication beam steering optics. The optical communication beam steering optics are configured to steer generated transmit communication laser beams to a communication satellite. The optical communication beam steering optics further are configured to steer received communication laser beams from the shared telescope to the optical communication transceiver. The weather LiDAR system includes a LiDAR laser, LiDAR beam steering optics and LiDAR weather instruments. The LiDAR laser is used to generate transmit weather laser beams. The LiDAR beam steering optics is configured to direct the generated transmit weather laser beams.

Abstract: An optical communication system which is tunable and polarization insensitive is provided herein. The optical communication system may comprise an optical bench coupling an optical transmit pathway and an optical receiving pathway to an external pathway. The optical bench includes a polarization insensitive optical circulator. The system may further include a tunable component positioned along the optical receiving pathway, and a controller coupled to the tunable component.

Abstract: A communication system has a plurality of LEO satellites in a specified orbital plane and a plurality of trunk satellites in a medium earth orbit. Each LEO satellite acquires satellite-specific data and includes inter-satellite links with adjacent LEO satellites. Each trunk satellite includes inter-satellite links adjacent trunk satellites. One of the trunk satellites operates as a relay trunk satellite in position to maintain optical communication with a specified ground station on the Earth. Each LEO satellite has a limited field of regard to establish optical communication with any trunk satellite. A relay LEO satellite is configured to establish optical communication with a corresponding trunk satellite. The plurality of LEO satellites relay aggregated data to the relay LEO satellite. The relay LEO satellite relays the aggregated data to the corresponding trunk satellite. The relay trunk satellite relays the received aggregated data to the corresponding ground station.

Abstract: An optical communication system using a photonic lantern for fine point tracking is disclosed. The optical communication system may comprise a photonic lantern, a signal processing unit including one or more fiber splitters to sample a fraction of a received signal in each single mode fiber of the photonic lantern, and one or more intensity sensors positioned in one arm of each fiber splitter, and used for monitoring fiber-specific intensity data associated with each of the single-mode fibers. The system may further include a fine pointing assembly and a controller for controlling a driver of the fine pointing assembly.

Abstract: An optical communication system which is tunable and polarization insensitive is provided herein. The optical communication system may comprise an optical bench coupling an optical transmit pathway and an optical receiving pathway to an external pathway. The optical bench includes a polarization insensitive optical circulator. The system may further include a tunable component positioned along the optical receiving pathway, and a controller coupled to the tunable component.

Abstract: Various embodiments are disclosed herein with generally relate to an optical communication system using a photonic lantern. In at least one embodiment, the optical system comprises: an optical transmitter coupled to a signal transmitting path; an optical receiver coupled to a signal receiving path; a photonic lantern, the photonic lantern extending between a first open end and a second open end, the first end comprising an opening to a single multi-mode fiber, and the second end comprising a plurality of single mode fibers that are adiabatically coupled to the multi-mode fiber, the plurality of single-mode fibers includes a single-mode fiber adapted to carry a fundamental optical mode and the remaining single-mode fibers adapted to carry higher-order optical modes, wherein, the single-mode fiber is coupled to the optical transmitting path, the remaining single-mode fibers are coupled to the optical receiving path.

Abstract: Various embodiments are disclosed herein with generally relate to an optical communication system using a photonic lantern. In at least one embodiment, the optical system comprises: an optical transmitter coupled to a signal transmitting path; an optical receiver coupled to a signal receiving path; a photonic lantern, the photonic lantern extending between a first open end and a second open end, the first end comprising an opening to a single multi-mode fiber, and the second end comprising a plurality of single mode fibers that are adiabatically coupled to the multi-mode fiber, the plurality of single-mode fibers includes a single-mode fiber adapted to carry a fundamental optical mode and the remaining single-mode fibers adapted to carry higher-order optical modes, wherein, the single-mode fiber is coupled to the optical transmitting path, the remaining single-mode fibers are coupled to the optical receiving path.

Abstract: A communication system has a plurality of LEO satellites in a specified orbital plane and a plurality of trunk satellites in a medium earth orbit. Each LEO satellite acquires satellite-specific data and includes inter-satellite links with adjacent LEO satellites. Each trunk satellite includes inter-satellite links adjacent trunk satellites. One of the trunk satellites operates as a relay trunk satellite in position to maintain optical communication with a specified ground station on the Earth. Each LEO satellite has a limited field of regard to establish optical communication with any trunk satellite. A relay LEO satellite is configured to establish optical communication with a corresponding trunk satellite. The plurality of LEO satellites relay aggregated data to the relay LEO satellite. The relay LEO satellite relays the aggregated data to the corresponding trunk satellite. The relay trunk satellite relays the received aggregated data to the corresponding ground station.

Abstract: A method and system for initiating message listening and routing message content to authorized user devices is disclosed. For a second user device to receive notifications regarding records of a first user, the second user device provides information identifying the first user to a notification service. The notification service verifies the identifying information. The notification service initiates one or more listeners to listen for messages flowing over a messaging bus that are relating to the first user. Once a message is identified, at least a portion of the message is used to generate a notification that may be sent to the second user device.

Abstract: Systems, methods, and machine-readable media for process-performing resources and process specifications particularized to loads are provided. A provisional electronic composite for a load may be created. A type of process-performing resource may be identified. Performance data may be accessed to identify a process-performance duration that corresponds to a process type, the type of process-performing resource, process-performance locations, and process-performance times. A process-assignment duration may be defined, and an availability of a process-performing resource may be detected. A performance time may be determined based on the availability of the process-performing resource. Instruction to perform the process at the performance time may transmitted to at least one resource-controlling device. The provisional electronic composite for the load may be modified based on the performance time and the instruction to form an updated electronic composite.

Abstract: This disclosure relates to the processing of data streams. More specifically, application of particular protocols to a stream and a detection analysis facilitate a selective, reliable and efficient transmission of pertinent stream data to destination addresses.

Abstract: An optical system includes a plurality of internal apertures, a plurality of external optical assemblies and a telescope assembly positioned between the plurality of internal apertures and the plurality of external optical assemblies. Each internal aperture is operable to receive a corresponding aperture-specific optical signal. Each external optical assembly corresponds to one of the internal apertures, and each external optical assembly is operable to direct the aperture-specific optical signal of the corresponding internal aperture in a corresponding external direction. The external direction for each external optical assembly is independently controllable and the telescope assembly defines a shared optical train arranged to direct the aperture-specific optical signals between each internal aperture and the corresponding external optical assembly.

Abstract: A method for assessing completion of events in a network environment is provided. The method includes receiving a first event vector, generating a second event vector, machine matching the first event vector to the second event vector, and generating an output that includes a variable indicating whether an event corresponding to the first event vector is complete. If each of a plurality of first nodes of the first event vector matches a corresponding one of a plurality of the second nodes of the second event vector, the variable indicates that the event corresponding to the first event vector is complete. If at least one of the plurality of the first nodes of the first event vector is mismatched with the corresponding one of the plurality of the second nodes of the second event vector, the variable indicates that the event corresponding to the first event vector is incomplete.

Abstract: A portable imaging apparatus and system. A sample processing device has a reaction chamber configured to receive a sample and react the sample with a fluorescent compound that emits a specified wavelength of light when excited by light within an excitation band. An illumination source can be positioned to illuminate the reaction chamber when the sample processing device is positioned for imaging. A light guide can be positioned to face the reaction chamber and transfer the emitted light to an imaging detector. The light guide has a filter that blocks the wavelength of light from the illumination source and passes the fluorescent emitted light. The light guide unit defines an angular light acceptance range and is configured to constrain angular spreading of light.

Abstract: This disclosure relates to the processing of data streams. More specifically, application of particular protocols to a stream and a detection analysis facilitate a selective, reliable and efficient transmission of pertinent stream data to destination addresses.