Abstract: Optical ground terminals (OGT) allowing high optical rate communications for line of sight and non-line of sight operating conditions are disclosed. The described devices include a multifaceted structure where optical telescopes, phase array antennas, and arrays of optical detectors are disposed. Methods to calculate angle-of-arrival based the contributions from optical detectors are also disclosed.

Abstract: Multiple-link optical terabit terminals (MLOTT) allowing high speed data transfer rates in terabit per second range in an omnidirectional fashion are disclosed. The described terminals have multifaceted structure, provide full coverage, implement single laser or laser arrays, and single detector or detector arrays to achieve higher transmission rates. Wavelength division multiplexing schemes can also be used when implementing the disclosed terminals for higher data rates. Steerable mirrors and lenses can be implemented as part of the terminals and based on angle-of-arrival calculations performed in real time.

Abstract: Interplanetary networks for space internet and space positioning are presented. The described networks deploy spacecraft swarms along the solar system to form a science and communications platform. The disclosed network nodes are placed around planetary Lagrange points. Creation of optical synthetic apertures using smallsat swarms for inter- and intranet communications is further described. Exemplary subnetworks such as the cislunar network are also presented.

Abstract: Optical ground terminals (OGT) allowing high optical rate communications for line of sight and non-line of sight operating conditions are disclosed. The described devices include a multifaceted structure where optical telescopes, phase array antennas, and arrays of optical detectors are disposed. Methods to calculate angle-of-arrival based the contributions from optical detectors are also disclosed.

Abstract: An ultrafast omnidirectional wireless data transfer apparatus and system. The ultrafast omnidirectional wireless data transfer apparatus includes an array of laser diodes, an array of fast detectors, and a connector for connecting to a sensor, a computer, and/or a network. The array of laser diodes, and the array of fast detectors are housed in a multifaceted geometry in order to provide communication coverage in all directions. In one aspect, each laser in the array of laser diodes operates at different wavelengths. In another aspect, the ultrafast omnidirectional wireless data transfer apparatus includes field programmable gate arrays. In yet another aspect, the ultrafast omnidirectional wireless data transfer apparatus includes an array of collimators that are connected to an optical combiner.

Abstract: An omnidirectional optical communication system. The omnidirectional optical communication system includes a multifaceted structure, a laser transmitter with a steerable mechanism, an optical detector receiver, and an angle-of-arrival system. In one aspect, the laser transmitter with a steerable mechanism, the optical detector receiver, and the angle-of-arrival system are housed in within the multifaceted structure, which enables omnidirectional optical communication. In another aspect, the omnidirectional optical communication system is used in a spacecraft for inter-spacecraft omnidirectional optical communication. In yet another aspect, the omnidirectional optical communication system is used in terrestrial applications for gigabit communications in WiFi, inter smartphones, internet of things and smart cities. In yet another aspect, the omnidirectional optical communication system further includes a global positioning system.

Abstract: An ultrafast omnidirectional wireless data transfer apparatus and system. The ultrafast omnidirectional wireless data transfer apparatus includes an array of laser diodes, an array of fast detectors, and a connector for connecting to a sensor, a computer, and/or a network. The array of laser diodes, and the array of fast detectors are housed in a multifaceted geometry in order to provide communication coverage in all directions. In one aspect, each laser in the array of laser diodes operates at different wavelengths. In another aspect, the ultrafast omnidirectional wireless data transfer apparatus includes field programmable gate arrays. In yet another aspect, the ultrafast omnidirectional wireless data transfer apparatus includes an array of collimators that are connected to an optical combiner.

Abstract: An omnidirectional optical communication system. The omnidirectional optical communication system includes a multifaceted structure, a laser transmitter with a steerable mechanism, an optical detector receiver, and an angle-of-arrival system. In one aspect, the laser transmitter with a steerable mechanism, the optical detector receiver, and the angle-of-arrival system are housed in within the multifaceted structure, which enables omnidirectional optical communication. In another aspect, the omnidirectional optical communication system is used in a spacecraft for inter-spacecraft omnidirectional optical communication. In yet another aspect, the omnidirectional optical communication system is used in terrestrial applications for gigabit communications in WiFi, inter smartphones, internet of things and smart cities. In yet another aspect, the omnidirectional optical communication system further includes a global positioning system.

Abstract: A Spatial Power Combining Amplifier (SPCA) exhibiting a new concept for the amplification of coherent (e.g., microwave) radiation. A general description of the SPCA a power analysis at various SPCA stages is provided. A successfully tested S-band SPCA example was able to deliver 120 W of power with a gain of 50 dB and 50 percent efficiency.

Abstract: A Spatial Power Combining Amplifier (SPCA) exhibiting a new concept for the amplification of coherent (e.g., microwave) radiation. A general description of the SPCA a power analysis at various SPCA stages is provided. A successfully tested S-band SPCA example was able to deliver 120 W of power with a gain of 50 dB and 50 percent efficiency.

Abstract: An electron beam accelerator utilizes a single microwave resonator holding a transverse-magnetic circularly polarized electromagnetic mode and a charged-particle beam immersed in an axial focusing magnetic field. The combined effect of the transverse-magnetic microwave fields and the axial magnetic field provide the electron beam with a helical shape and a rotational motion which allows the entire beam to be continually accelerated to high energies in a dc-like fashion. The use of the transverse-magnetic circularly polarized electromagnetic mode allows the resonant frequency to be independent of resonator length--allowing the resonator length to be selected to achieve desired particle acceleration. Using a transverse-magnetic rotating wave mode, TM.sub.110, allows the cavity frequency to be independent of cavity length and eliminates the need for bunched beams and short cavities while allowing the use of a spiraling moving beam.