Kahn, "Field Conjugation Adaptive Arrays in Free-Space Coherent Laser Communications", J. Kahn, "Sequential Optimization of Adaptive Arrays in Coherent Laser Communications", J. 135007, May 31, 2016.Īdaptive Optics and Field Conjugation Arrays for Coherent LinksĪ. Hollberg, "Space-Time Reference with an Optical Link", Class. Kahn, "Effect of Atmospheric Anisoplanatism on Earth-to-Satellite Time Transfer over Laser Communication Links”, Optics Express, vol. Reciprocal Two-Way Optical Time Transfer Links", Phys. Kahn, "Effect of Atmospheric Turbulence on Timing Instability for Partially 822-826, December 2015.įree-Space Optical Transfer of Frequency, Time and Position Kahn "Capacity Limits of Spatially Multiplexed Free-Space Communication", Nature Photon., vol. Kahn, "Optimal Modes for Spatially Multiplexed Free-Space Communication in Atmospheric Turbulence", Optics Express, vol. on Optical Commun., Basel, Switzerland, September 18-22, 2022.Ī. Belmonte, "Modal Multiplexing and Atmospheric Turbulence Mitigation in Free-Space Optical Communications", tutorial presentation at Euro. Spatial Mode-Based Multiplexing and Turbulence Compensation Techniques We have studied acquisition and tracking algorithms for free-space links between moving platforms, Where atmospheric effects are reduced, using nonlinear wavelength converters at the transmitter and receiver. We have demonstrated free-space coherent transmission at mid-infrared wavelengths, Methods to overcome atmospheric turbulence, in links employing either coherent detection We have studied optical and electronic signal processing Which can impair free-space optical links in much the same way that multipath fadingĪffects radio-frequency wireless links. When an optical signal is transmitted through the atmosphere,Ītmospheric turbulence causes fluctuations in the amplitude and phase of the received wavefront, MEMS Devices for Free-Space Optical Communications.Communication and Networking Architectures for Smart Dust.Modulation, Coding and Equalization Techniquesįree-Space Optical Communications for MEMS-Based Sensor Nodes ("Smart Dust").Array Receivers and Signal Processing Techniques for Direct-Detection Links.Wavelength Conversion for Coherent Links.Adaptive Optics and Field Conjugation Arrays for Coherent Links.Free-Space Optical Transfer of Frequency, Time and Position.Spatial Mode-Based Multiplexing and Turbulence Compensation Techniques. Free-Space Optical Communications Free-Space Optical Communications ContentsĪtmospheric Free-Space Optical Communications
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