1.28 terabit/s (32x40 Gbit/s) wdm transmission system for free space optical communications

Ciaramella, E.; Arimoto, Yoshinori; Contestabile, G.; Presi, M.; D’Errico, A.; Guarino, V.; Matsumoto, Mitsuji

doi:10.1109/jsac.2009.091213

Cited by 247 publications

(155 citation statements)

References 9 publications

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“…In order to overcome these limitations, a spectrum slicing technology is good alternate to WDM. Spectrum slicing having less complex operation as compared to WDM, which uses several intensity sources operational at different frequencies [5]. Also, WDM systems are wavelength selective and sensitive to routing of each wavelength to specific port.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Analysis of Free Space Optical Link for Different Atmospheric Turbulences, Beam divergences and modulation formats

Singh¹,

Singh²

2017

IJERA

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In this work, a high speed free space optical (FSO) system is demonstrated by incorporating cost effective technique called spectrum slicing. Major achievement of the research is to use the nonlinear effect called self phase modulation as an application in spectrum slicing. A multichannel system is realized using the spectrum slices and each supports data rate of 2.5 Gbps over 5 km link distance. Investigation is carried out for different performance degrading turbulences that affect the FSO channels such as fog and haze. Different beam divergences and aperture size of transmitter and receiver is also studied for NRZ and RZ. Outcomes after analyses revealed that NRZ in large antenna sizes under clear weather for minimum values of beam divergence is better to use than RZ modulation format.

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Section: Introductionmentioning

confidence: 99%

Investigation and Analysis of Free Space Optical Link for Different Atmospheric Turbulences, Beam divergences and modulation formats

Singh¹,

Singh²

2017

IJERA

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“…The FSO communications are attracting attention as the contemporary technology to solve the last mile bottleneck issues in local area access networks due to their high bandwidth, low cost implementation in a non-licensed spectrum, relatively lower power consumption and immunity and security compared with RF technologies [1][2][3]. However, the constitution of the atmosphere, particularly, aerosols (fog, smoke, dust) have similar particle size distributions compared with optical wavelengths in FSO.…”

Section: Introductionmentioning

confidence: 99%

Analysis of fog and smoke attenuation in a free space optical communication link under controlled laboratory conditions

Ijaz

Ghassemlooy

Minh

et al. 2012

2012 International Workshop on Optical Wireless Communications (IWOW)

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Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) Analysis of Fog and Smoke Attenuation in a Free

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“…FSO offers an unregulated bandwidth in excess of THz and very high speed which makes them extremely attractive means of meeting the ever-increasing demand for broadband traffic, mostly driven by last-mile access network and HDTV broadcasting services [1]. FSO systems based on the wavelength division multiplexing (WDM) technology can reach up to 1 Terabit/s capacity or even beyond [2]. Further advantages include smaller and more compact transceivers, reduced installation and development cost and immunity to the electromagnetic interference [1].…”

Section: Introductionmentioning

confidence: 99%

“…Based on these features, FSO communications systems developed for voice, video and broadband data communications are used by security organizations such as government and military [2].…”

Section: Introductionmentioning

confidence: 99%

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel

Tang

Ghassemlooy

Rajbhandari

et al. 2011

IET Microw. Antennas Propag.

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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 modeled as the log-normal and the negative exponential atmospheric turbulence channels are presented. The conditional and unconditional BER expressions are derived, demonstrating the comprehensive similarity between the 2PolSK and the binary frequency shift keying (2FSK) schemes with regards to the system sensitivity. The power penalty due to the non-ideal polarization beam splitter (PBS) is also analyzed. The receiver sensitivity employing 2PolSK is compared with other modulation schemes in the presence of turbulence and the phase noise. The results show that 2PolSK offers improved signal-to-noise ratio (SNR) performance compared to the binary amplitude shift keying (2ASK).

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1.28 terabit/s (32x40 Gbit/s) wdm transmission system for free space optical communications

Cited by 247 publications

References 9 publications

Investigation and Analysis of Free Space Optical Link for Different Atmospheric Turbulences, Beam divergences and modulation formats

Investigation and Analysis of Free Space Optical Link for Different Atmospheric Turbulences, Beam divergences and modulation formats

Analysis of fog and smoke attenuation in a free space optical communication link under controlled laboratory conditions

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel

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