A high-speed radio over free space optics transmission link under dust environment conditions employing hybrid wavelength- and mode-division multiplexing

AbstractRadio over free space optics (Ro-FSO) innovation saddles the vast limit of optical fiber and the portability from local to remote systems. To enhance the capacity of Ro-FSO systems without compromising the bandwidth, this work incorporates use of hybrid polarization division multiplexing (PDM) with optical code division multiplexing (OCDMA) schemes. Due to low deployment time and support cost, the vast majority of the current optical network application systems adopts free space optics (FSO) as the elective answer for suitably supplanting fiber optical cable. This study has incorporated PDM and OCDMA schemes to design a 50 Gbps Ro-FSO link. Ten channels, each with 5 Gbps of data, are transported via FSO link of 3500 m. In addition, the proposed PDM-OCDMA-Ro-FSO link is evaluated under various atmospheric commotions.

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High speed parallel multi-chip interconnection with free space optics

1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009) ◽

10.1109/leos.1999.812018 ◽

2003 ◽

Author(s):

Xuezhe Zheng ◽

P.J. Marchand ◽

Dawei Huang ◽

S.C. Esener

Keyword(s):

Free Space ◽

High Speed ◽

Free Space Optics ◽

Space Optics

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Mitigation of Atmospheric Turbulences Using Mode Division Multiplexing based on Decision Feedback Equalizer for Free Space Optics

Journal of Optical Communications ◽

10.1515/joc-2017-0169 ◽

2020 ◽

Vol 41 (2) ◽

pp. 185-193 ◽

Cited By ~ 1

Author(s):

Abdullah Almogahed ◽

Angela Amphawan ◽

Yousef Fazea

Keyword(s):

Free Space ◽

Minimum Mean Square Error ◽

Decision Feedback ◽

Free Space Optics ◽

Decision Feedback Equalizer ◽

Free Space Optical ◽

Space Optics ◽

Link Distance ◽

Mode Division Multiplexing ◽

Simulation Results

AbstractIn mode division multiplexing (MDM) free space optical (FSO) communication system, the atmospheric turbulences such as fog, rain, and haze cause adverse effects on system performance. This paper investigates the mitigation of atmospheric turbulences of FSO using MDM and decision feedback equalizer (DFE) with minimum mean square error (MMSE) algorithm. The implementation of the MMSE algorithm is used to optimize both the feedforward and the feedback filter coefficients of DFE. The proposed system comprises three parallel 2.5Gbit/s channels using Hermite–Gaussian modes. A data rate of 7.5Gbit/s over 40 m, 800 m, 1400 m, and 2km under medium fog, rain, haze, and clear weather, respectively, has been achieved. In addition, it is noticed that the link distance is reduced while increasing the attenuation. The simulation results revealed that a DFE improves the performance MDM FSO system while maintaining high throughput and desired low bit error rate.

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2 × 10 Gbit/s–10 GHz Radio over Free Space Optics Transmission System Incorporating Mode Division Multiplexing of Hermite Gaussian Modes

Journal of Optical Communications ◽

10.1515/joc-2019-0047 ◽

2019 ◽

Vol 0 (0) ◽

Cited By ~ 1

Author(s):

Mehtab Singh ◽

Jyoteesh Malhotra

Keyword(s):

Free Space ◽

Transmission System ◽

Free Space Optics ◽

Space Optics ◽

Mode Division Multiplexing ◽

The Impact

AbstractIn this paper, we report the modeling and simulative investigation of a mode division multiplexing (MDM)-based Radio over Free space optics (RoFSO) transmission system. Two separate 10 Gbit/s–10 GHz information signals are transported successfully over 30 km link range using distinct Hermite Gaussian (HG) modes. Also, the decomposition of distinct modes at the receiver terminal has been reported in this work. Furthermore, the impact of different fog conditions and scintillation effect on the performance of the proposed link has also been discussed in this paper.

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