Results 21 to 30 of about 117,276 (312)
Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel [PDF]
, 2008 An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which
Ghassemlooy, Zabih +9 more
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Laser Technology in Photonic Applications for Space
Instruments, 2019 The registered history of laser technologies for space application starts with the first laser echoes reflected off the Moon in 1962. Since then, photonic technologies have become very prominent in most technical development.
Denis Guilhot, Pol Ribes-Pleguezuelo
doaj +1 more source
A liénard oscillator resonant tunnelling diode-laser diode hybrid integrated circuit: model and experiment [PDF]
, 2008 We report on a hybrid optoelectronic integrated circuit based on a resonant tunnelling diode driving an optical communications laser diode. This circuit can act as a voltage controlled oscillator with optical and electrical outputs.
Wasige, E. +8 more
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Hardware routed quantum key distribution networks
IET Quantum Communication, 2022 Quantum communication networks pose immense potential for revolutionising secure communications for several applications such as banking, defence, etc.
Ansh Singal +3 more
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Laser ranging and communications for LISA
Optics Express, 2010 The Laser Interferometer Space Antenna (LISA) will use Time Delay Interferometry (TDI) to suppress the otherwise dominant laser frequency noise. The technique uses sub-sample interpolation of the recorded optical phase measurements to form a family of interferometric combinations immune to frequency noise.
Sutton, Andrew +3 more
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Sensors, 2022 Over the last two decades, Geiger-mode lidar (GML) systems have been developing rapidly in defense and commercial applications, demonstrating high point density and great collection efficiency. We presented a circular scanning GML system simulation model
Fanghua Liu +7 more
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Behavior of basalt under laser-induced shock-wave application to the planetary hypervelocity impact effect [PDF]
, 2011 This paper presents the results of an investigation of the impact of laser-induced shock on basalt samples in a water confinement regime. In order to observe the effect of laser shock-wave propagation, in this material, the rear free surface velocity is ...
BOUSTIE, Michel +12 more
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Anisoplanatism in airborne laser communication
Optics Express, 2008 Airborne laser-communication systems require special considerations in size, complexity, power, and weight. We reduce the variability of the received signal by implementing optimized multiple-transmitter systems to average out the deleterious effects of turbulence.
James A, Louthain, Jason D, Schmidt
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Analysis and possible estimation of keyhole depths evolution, using laser operating parameters and material properties [PDF]
, 2018 The authors propose an analysis of the effect of various operating parameters on the keyhole depth during laser welding. The authors have developed a model that uses the analysis of the thermal field obtained in 2D geometry, which is mainly defined by ...
SCHNEIDER, Matthieu +11 more
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Low Power FPGA Implementation of a Smart Building Free Space Optical Communication System
Photonics, 2022 Free Space Optical (FSO) communication systems have extensively invaded the speed of smart city evolution due to the current surge in demand for wireless communication spots that can match recent challenges due to high technical leaps in smart city ...
Rehab Ali +4 more
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