Experimental analysis of the effects of atmospheric turbulence on a 29-km free-space laser communication link

2011 ◽  
Author(s):  
Vladimir Nikulin ◽  
John Malowicki ◽  
Vijit Bedi ◽  
David Hughes ◽  
Herbert Bloss
Keyword(s):  
Atmospheric Turbulence ◽  
Experimental Analysis ◽  
Free Space ◽  
Laser Communication ◽  
Communication Link

Free-space high-speed laser communication link across the Chesapeake Bay

2002 ◽  
Author(s):  
Christopher I. Moore ◽  
Harris R. Burris, Jr. ◽  
Michele R. Suite ◽  
Mena F. Stell ◽  
Michael J. Vilcheck ◽  
...  
Keyword(s):  
Chesapeake Bay ◽  
Free Space ◽  
High Speed ◽  
Laser Communication ◽  
Communication Link

Analysis of Atmospheric Turbulence on Free Space Optical System using Homotopy Perturbation Method

2019 ◽  
Vol 40 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Monika Rani ◽  
Harbax Singh Bhatti ◽  
Vikramjeet Singh
Keyword(s):  
Perturbation Method ◽  
Atmospheric Turbulence ◽  
Free Space ◽  
Secure Communication ◽  
High Performance ◽  
Homotopy Perturbation Method ◽  
Communication Link ◽  
Free Space Optical ◽  
Aperture Diameter ◽  
Homotopy Perturbation

AbstractFree Space Optics (FSO) is a wireless optical communication technology which depends on propagation of optical beam through air. FSO communication system provides secure communication link, cost-effective solution and license-free operation. In this paper, the FSO communication link has been analysed in turbulent atmosphere using homotopy perturbation method (HPM). We have designed a FSO system operating at an optical wavelength of 850 nm with a signal power of 4 dBm having a link range of 2 km between transmitter and receiver unit. It has been observed that in atmospheric turbulence high performance FSO link is achieved by increasing the aperture diameter of receiver telescope.

Performance Comparison of Free-Space Optical (FSO) Communication Link Under OOK, BPSK, DPSK, QPSK and 8-PSK Modulation Formats in the Presence of Strong Atmospheric Turbulence

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
A. K. M. Sharoar Jahan Choyon ◽  
Ruhin Chowdhury
Keyword(s):  
Phase Shift ◽  
Atmospheric Turbulence ◽  
Free Space ◽  
Communication Systems ◽  
Communication Link ◽  
Phase Shift Keying ◽  
Free Space Optical ◽  
Modulation Formats ◽  
Shift Keying ◽  
Ber Performance

AbstractFree-space optical (FSO) communication system provides several advantages over radio frequency (RF) system offering high bandwidth, low cost, small space requirements and more secure transmission which is free from Electromagnetic Interference (EMI). However, when the transmitted light signal passes through the atmosphere it experiences attenuation and fluctuations due to atmospheric turbulence. This paper analyzes the bit error rate (BER) performance of FSO communication systems under strong atmospheric turbulence for on-off keying (OOK), binary phase-shift keying (BPSK), differential phase shift keying (DPSK), quadrature phase shift keying (QPSK) and 8-phase shift keying (8-PSK) for link distances of 500, 1,000, 1,500 and 2,000 m. The probability density function (pdf) of the received irradiance is modelled using the gamma-gamma distribution model. It is found that the system exhibits the best BER performance and compensates the lowest power penalty at BER of 10 - 9 for BPSK modulation compared with other modulation techniques which makes BPSK more appropriate to be used with FSO turbulent system.

Correction of atmospheric turbulence by adaptive optics in waveband of free-space coherent laser communication

2014 ◽  
Vol 22 (10) ◽  
pp. 2605-2610 ◽  
Author(s):  
刘超 LIU Chao ◽  
陈善球 CHEN Shan-qiu ◽  
廖周 LIAO Zhou ◽  
魏凯 WEI Kai ◽  
李敏 LI Min ◽  
...  
Keyword(s):  
Atmospheric Turbulence ◽  
Adaptive Optics ◽  
Free Space ◽  
Laser Communication

scholarly journals Mutual alignment errors due to the variation of wave-front aberrations in a free-space laser communication link

2001 ◽  
Vol 9 (11) ◽  
pp. 592 ◽  
Author(s):  
Morio Toyoshima ◽  
Nobuhiro Takahashi ◽  
Takashi Jono ◽  
Toshihiko Yamawaki ◽  
Keizo Nakagawa ◽  
...  
Keyword(s):  
Wave Front ◽  
Free Space ◽  
Laser Communication ◽  
Communication Link ◽  
Alignment Errors
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