Effect of Beam Divergence on WDM-FSO Transmission System

Chaudhary, Sushank; Bansal, Preety; Lumb, Manisha

doi:10.5120/16181-5397

Cited by 22 publications

(11 citation statements)

References 9 publications

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“…Figure 8 shows BER versus signal power at 4 km for RZ modulation format. For channels 1,4 been observed that if we increased signal power from WDM transmitter side BER is decreased. Figure 9 shows -factor versus signal power at 4 km for RZ modulation format.…”

Section: Resultsmentioning

confidence: 94%

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Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

Parkash

Sharma

Singh

2016

Advances in Optical Technologies

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We successfully demonstrate 40 GB/s 8 channels' Dense Wavelength Division Multiplexing (DWDM) over free space optical (FSO) communication system. Each channel is transmitting 5 GB/s data rate in downstream separated by 0.8 nm (100 GHz) channel spacing with 1.8 GHz filter bandwidth. DWDM over FSO communication system is very effective in providing high data rate transmission with very low bit error rate (BER). The maximum reach of designed system is 4000 m without any compensation scheme. The simulation work reports minimum BER for Return-to-Zero (RZ) modulation format at different channels 1, 4, and 8 are found to be 2.32 −17 , 1.70 −16 , and 9.51 −15 at 4000 m distance, respectively. Sharp increase in BER occurs if data rate and distance increase up to 10 GB/s and 5000 m.

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Section: Resultsmentioning

confidence: 94%

“…FSO links are of low cost, simple, and easy to install [3]. Installation is easy because no license is required from FCC for using FSO [4]. Also, there is no time and money wastage in digging the street to lay fiber.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

Parkash

Sharma

Singh

2016

Advances in Optical Technologies

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“…The two carrier waves are represented by in-phase (I) and quadrature-phase (Q) components of the signal. Here, M=8 for 8-QAM, M=16 for 16-QAM, and so on [4]. The unconditional BER for M-ary QAM is given as [2] ( ) ( )…”

Section: Mathematical Preliminaries For Bit Error Rate Calculationmentioning

confidence: 99%

Performance Evaluation of Free Space Optical Communication System for Rayleigh Fading Environment

Thakur

2017

ijarcs

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Due to ability to provide very high-speed transmission of data, without the use of any physical channel, free space optics (FSO) is an emerging as a promising communication technology. In FSO, the atmosphere ants as the channel and its turbulent nature causes degradation in bit error rate performance. This paper presents the performance evaluation of FSO communication for through Rayleigh fading environment. The equations for Bit Error Rate and Outage Probability are derived for BPSK, QPSK and 16-QAM modulation techniques. Simulation results has been presented out to calculate the FSO communication system performances derived for BPSK, QPSK and 16-QAM modulation techniques.

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“…access huge bandwidth available in optical fibre is wavelength division multiplexing (WDM) [15][16][17].…”

Section: International Journal Of Computer Applications (0975 -8887) mentioning

confidence: 99%

6 x 20Gbps Long Reach WDM-PI based High Altitude Platform Inter-Satellite Communication System

Chaudhary¹,

Sharma²,

Neetu³

2015

IJCA

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InterSatellite communication is one of the remarkable technologies in the era of high altitude platform (HAP) communication system. This work is focused on the transmission of six channels, each carrying 20Gbps non return to zero (NRZ) data over inter-satellite link of 3500Km by adopting wavelength division multiplexing (WDM) and polarization interleaving (PI) scheme. The results are reported in terms of signal to noise ratio (SNR), total received power and eye diagrams which show successful transmission of 20x6Gbps data up to 3500km.

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Effect of Beam Divergence on WDM-FSO Transmission System

Cited by 22 publications

References 9 publications

Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

Performance Evaluation of Free Space Optical Communication System for Rayleigh Fading Environment

6 x 20Gbps Long Reach WDM-PI based High Altitude Platform Inter-Satellite Communication System

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