Results 21 to 30 of about 17,683 (311)
Measurements and Modeling of Optical Turbulence in the Coastal Environment
Applied Sciences, 2022 The goal of this study was to characterize optical turbulence in the near-coastal environment. Measurements to obtain the refractive index structure parameter and other meteorological data were taken over the course of a month along the shore of Monterey
Sasha Barnett +3 more
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Optical Turbulence Profile in Marine Environment with Artificial Neural Network Model
Remote Sensing, 2022 Optical turbulence strongly affects different types of optoelectronic and adaptive optics systems. Systematic direct measurements of optical turbulence profiles [Cn2(h)] are lacking for many climates and seasons, particularly in marine environments ...
Cuicui Bi +7 more
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Optical turbulence in fiber lasers [PDF]
Optics Letters, 2014 We analyze the nonlinear stage of modulation instability in passively mode-locked fiber lasers leading to chaotic or noise-like emission. We present the phase-transition diagram among different regimes of chaotic emission in terms of the key cavity parameters: amplitude or phase turbulence, and spatio-temporal intermittency.
openaire +4 more sources
Analysis of the Optical Turbulence Model Using Meteorological Data
Remote Sensing, 2022 The model of atmosphere optical turbulence is important in the research field of laser atmospheric transmission, and plays a key role in astronomical site selection. In this paper, the single and overall statistical analysis between different outer scale
Manman Xu +3 more
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Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel [PDF]
, 2011 In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link ...
Z. Ghassemlooy +12 more
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Alamouti-Type STBC for Atmospheric Optical Communication Using Coherent Detection
IEEE Photonics Journal, 2014 Alamouti-type space-time block coding is studied for optical wireless communication systems using coherent detection over atmospheric turbulence channels.
Mingbo Niu +2 more
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Remote Sensing, 2023 In this study, we devised a constraint method, called multi-model ensemble pattern (MEP), to estimate the refractive index structure parameter (Cn2) profiles based on observational data and multiple existing models.
Hanjiu Zhang +11 more
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Performance of BPSK subcarrier intensity modulation free-space optical communications using a log-normal atmospheric turbulence model [PDF]
, 2010 In this paper, we present simulation results for the bit error rate (BER) performance and the fading penalty of a BPSK - subcarrier intensity modulation (BPSK-SIM) free-space optical (FSO) communication link in a log-normal atmospheric turbulence model ...
S. S. Muhammad +13 more
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International Journal of Optics, 2016 This paper investigates the modulation transfer function of a Gaussian beam propagating through a horizontal path in weak-fluctuation non-Kolmogorov turbulence. Mathematical expressions are obtained based on the generalized modified atmospheric spectrum,
Chao Gao, Xiaofeng Li
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Remote Sensing, 2022 It is very useful for adaptive optics (AO) systems to have appropriate knowledge of optical turbulence. However, due to the limitations of space and time, it is difficult to obtain turbulence parameters, especially in the far sea area. In this paper, the
Manman Xu +3 more
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