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Light Scattering

Summary Rayleigh Scattering Rayleigh scattering is the scattering of light or other electromagnetic radiation by particles in the Earth’s atmosphere that…

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Heterodyne Detection and Homodyne Detection

Heterodyne Detection Heterodyne detection, also known as coherent detection, is a method used in Free Space Optics (FSO) to enhance signal…

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Coherent Light Sources

Coherent Light Sources Coherent light sources are lasers that emit light with a high degree of coherence, meaning the light waves…

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Quantum Photonic-Dimer Laser

Overview Researchers at the McKelvey School of Engineering, Washington University in St. Louis, are developing a novel quantum photonic-dimer laser that…

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Continuous Variable QKD (CV-QKD)

Summary Continuous Variable Quantum Key Distribution (CV-QKD) is a type of quantum key distribution (QKD) protocol that uses continuous variables, such…

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Discrete Variable Quantum Key Distribution (DV-QKD)

Summary Discrete Variable Quantum Key Distribution (DV-QKD) uses quantum mechanics as a method for distribution of encryption keys for secured communications.…

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ETOGS

Overview The ESA Transportable Optical Ground Station (ETOGS) is a shipping container sized portable laser ground station testbed for use with…

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Optical Frequency Comb Generator (OFCG)

Overview An Optical Frequency Comb Generator (OFCG) is utilized in optical communication systems to generate a series of discrete, equally spaced…

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FSO Multiple In Multiple Out (MIMO) & Single In Single Out (SISO)

Overview SISO and MIMO refer to arrangements of optical transmitters and receivers. SISO systems are generally simpler but have lower data…

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FSO-WDM

Summary Wave Division Multiplexing (WDM) enables the transportation of multiple optical carrier signals along a single optical link by utilizing different…

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