Free space laser telecommunication through fog

Overview One of the largest obstacles FSO communication faces is the ability to penetrate dense fog and other atmospheric turbulence. On 18 October…

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Wavelength Coherence

Overview The space segment optical beam and the ground segment optical beam must both utilize either non-coherent or coherent beams (meaning…

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OLSG

The Optical Link Study Group (OLSG) was formed by the Interagency Operations Advisory Group (IOAG) in November 2010.  The purpose of the OLSG was to…

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High-Speed Train System

Overview Trains that have wireless communication capabilities, either for on-board customer use or transport communication services, typically operate in RF bands.…

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Quantum Experiments at Space Scale (QUESS)

Overview Quantum Experiments at Space Scale (QUESS) is an international project which aims to establish a quantum-encrypted European-Asian network by 2020,…

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Saturation Flux Density (SFD)

Overview Saturation flux density (SFD) is a measure of how much power a signal must have to saturate a detector. Flux…

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FSO Underwater

Overview Free-space optical communications are typically performed in free space, such as air and vacuum, due to the high transmissivity of…

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Alleviation of Jamming in Free Space Optical Communication

Overview Most FSO communications systems operate at a limited range of distinct wavelengths (usually 1300 nm or 1550 nm) making them…

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Confining Light in 3-D Space

New communication technology such as ultra-wideband and 5G is increasing the demand for Photonic Integrated Circuits (PIC). PIC was thought of…

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Transportable Optical Ground Station (TOGS)

Overview Transportable Optical Ground Station (TOGS). See Optical Ground Station (OGS). Near real-time data downlinks from aircrafts, satellites and high altitude…

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