scholarly journals A New Ground-to-Train Communication System Using Free-Space Optics Technology

2008 ◽  
Vol 128 (4) ◽  
pp. 523-528 ◽  
Author(s):  
Hideaki Kotake ◽  
Shinichiro Haruyama ◽  
Masao Nakagawa
Keyword(s):  
Communication System ◽  
Free Space ◽  
Free Space Optics ◽  
Space Optics

PAM-4 based long-range free-space-optics communication system with self injection locked QD-LD and RS codec

2020 ◽  
Vol 476 ◽  
pp. 126304
Author(s):  
Rahul Mukherjee ◽  
Khaleda Mallick ◽  
Bibhatsu Kuiri ◽  
Saikat Santra ◽  
Bubai Dutta ◽  
...  
Keyword(s):  
Long Range ◽  
Communication System ◽  
Free Space ◽  
Free Space Optics ◽  
Space Optics ◽  
Range Free

Transmitter with quantum cascade laser for free space optics communication system

2011 ◽  
Vol 59 (4) ◽  
pp. 419-423 ◽  
Author(s):  
M. Gutowska ◽  
D. Pierścińska ◽  
M. Nowakowski ◽  
K. Pierściński ◽  
D. Szabra ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Communication System ◽  
Free Space ◽  
Open Space ◽  
Spectral Characteristics ◽  
Average Power ◽  
Experimental Tests ◽  
Free Space Optics ◽  
Quantum Cascade ◽  
Space Optics

Transmitter with quantum cascade laser for free space optics communication system The paper presents results of experimental tests of the quantum cascade laser from Alpes Lasers company in terms of its application in the optic communication system in an open space. The measurements involved the current - voltage characteristics while measuring also the average power of emitted radiation, and spectral characteristics for different temperatures and different laser pulse durations. The duration of laser pulses was matched to parameters used in telecommunication interfaces. The construction of the transmitter module which uses the tested laser is also presented.

A Review on Free Space Optics with Atmospheric and Geometrical Attenuation

2016 ◽  
Vol 37 (4) ◽  
Author(s):  
Suruchi Lath ◽  
Rakesh Goyal ◽  
Rajinder Singh Kaler
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Electromagnetic Interference ◽  
Free Space ◽  
Short Distance ◽  
Free Space Optics ◽  
Narrow Beam ◽  
Energy Beam ◽  
Space Optics ◽  
Optical Cable

AbstractFree space optics (FSO) communication is a short-distance wireless communication system. It can be used where optical fiber cables cannot be implemented. In FSO, the energy beam is accumulated and transmitted through space instead of guiding through an optical cable. FSO communication provides data at a rate of Gbps; it is highly secure because it uses narrow beam to transmit data from transmitter to receiver, uses license-free operation, has no electromagnetic interference and has quick installation. This paper gives an overview of performance of FSO communication with environmental attenuation.

Effects of Fog in Free-Space Optics Communication System

2017 ◽  
Author(s):  
Indira M. A. Almeida ◽  
Eduardo J. Aiub ◽  
Lúcia A. M. Saito ◽  
José A. J. Ribeiro
Keyword(s):  
Communication System ◽  
Free Space ◽  
Free Space Optics ◽  
Space Optics

scholarly journals Free space optics communication system design using iterative optimization

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Gebrehiwet Gebrekrstos Lema
Keyword(s):  
Optical Communication ◽  
Communication System ◽  
Free Space ◽  
Free Space Optics ◽  
Atmospheric Conditions ◽  
Eye Diagram ◽  
Iterative Optimization ◽  
Space Optics ◽  
Wireless Optical Communication ◽  
Visibility Distance

AbstractFree Space Optics (FSO) communication provides attractive bandwidth enhancement with unlicensed bands worldwide spectrum. However, the link capacity and availability are the major concern in the different atmospheric conditions. The reliability of the link is highly dependent on weather conditions that attenuate the signal strength. Hence, this study focuses to mitigate the weather and geographic effects using iterative optimization on FSO communication. The optimization maximizes the visibility distance while guaranteeing the reliability by minimizing the Bit Error Rate (BER). The wireless optical communication system is designed for the data rate of 10 Gbps. The performance of the proposed wireless optical communication is compared against the literature in terms of visibility distance, quality factor, BER, and Eye diagram at different atmospheric conditions. The simulation results have shown that the proposed work has achieved better performance.

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