Long Range Cost-Effective WDM-FSO System Using Hybrid Optical Amplifiers

Dayal, Navneet; Singh, Preeti; Kaur, Pardeep

doi:10.1007/s11277-017-4826-7

Cited by 37 publications

(8 citation statements)

References 12 publications

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“…The values of k and α are taken as 1.076 and 0.67 respectively and the empirical formula for calculating the rain attenuation is given by (Rashed and increase the capacity of FSOC system under various atmospheric conditions (Robinson and Jasmine 2016). Hybrid optical ampli ers have been used for WDM-FSOC link in order to increase the maximum achievable link range (Dayal et al 2017). Multibeam WDM based FSOC system has been demonstrated to mitigate the effects of haze weather conditions on the performance of system (Grover et al 2017).…”

Section: Rain Attenuation Modelmentioning

confidence: 99%

Performance analysis of free space optical communication system under rain weather conditions: a case study for inland and coastal locations of India

Singh

Mittal

2021

Opt Quant Electron

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This work aims to investigate the performance of Free Space Optical Communication link under average and worst rain weather conditions of India. The meteorological data related to rainfall, from 2014 to 2017, was obtained from the Indian Meteorological Department for six different locations of India, representing the inland and coastal areas. The attenuation coe cient due to rain for all the locations has been calculated using mathematical models. The performance analysis of Wavelength Division Multiplexing based Free Space Optical Communication system has been analyzed, by incorporating the attenuation due to rain for all considered locations, in terms of received power, signal to noise ratio, bit error rate and eye diagrams. The inland location of Hyderabad has given the best results in terms of above mentioned parameters as it has recorded minimum average rainfall of 2.35 mm/hr with minimum attenuation coe cient of 1.91 dB/km and can support a link range of 5.43 km, corresponding to bit error rate of order of 10 -9 under average rain weather conditions. On the other hand, the average rainfall is maximum for the coastal area of Mumbai with a value of 7.31 mm/hr, resulting in maximum attenuation coe cient of 4.08 dB/km and the maximum link range is limited to 3.48 km, corresponding to bit error rate of order of 10 -9 under average conditions of rain weather. Similarly, the inland locations of India have delivered a better link performance as compared to coastal areas under worst rain weather conditions also. So it has been concluded that the coastal areas of India have shown major degradation in the performance of the FSOC link as compared to inland locations of the country.

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Section: Rain Attenuation Modelmentioning

confidence: 99%

Performance analysis of free space optical communication system under rain weather conditions: a case study for inland and coastal locations of India

Singh

Mittal

2021

Opt Quant Electron

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“…The diversity in the channel brings in the concept of multiple input multiple output (MIMO), which uses multiple transmitters/receivers to improve the transmission reliability [24,25]. The adoption of diversity schemes not only proved to be a major cost-effective factor in improving the link reliability in FSO systems but also helps improve bandwidth capacity, quality factor (Q), and reduced latency [26][27][28]. Additional technology measures such as coherent reception, higher modulation techniques, artificial intelligence, and machine learning have also been suggested in recent literature as catalysts to enhance link performance in FSO systems; however, on the flip side, the technological intricacy and budgetary constraints of these techniques are major deterrents toward their commercial implementation [29,30].…”

Section: Introductionmentioning

confidence: 99%

Developing Cost-Effective and High-Speed 40 Gbps FSO Systems Incorporating Wavelength and Spatial Diversity Techniques

et al. 2021

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Free-space optical (FSO) communication systems are being anticipated to offer promising alternatives to existing radio networks in delivering high-speed data access to end-users. Ease of installation, robust features, and cost-effective operation have been the hallmark of FSO systems, and these features will play an obvious role in deciding the ways in which futuristic smart communication models will operate. Despite these arrays of features, FSO links suffer severe performance degradation due to channel-induced impairments caused by atmospheric effects such as rain, haze, and fog. In this work, we have investigated and compared the performance of 40 Gbps FSO links for different channel conditions ranging from clear weather to severe attenuation by incorporating spatial and wavelength diversity as performance booster techniques. The use of an erbium-doped fiber amplifier (EDFA) with FSO links has also been proposed here. Using performance metrics like bit error rate (BER) and eye patterns, it has been found that the use of EDFA not only helps in compensating for the link losses but also aids in realizing an all-optical processing based last-mile access system. The proposed FSO system will be capable of bridging the existing backbone fiber networks with end-users with minimal changes to the existing hardware regime, thereby proving to be extremely cost-effective in sharp contrast to radio-frequency generations which require major infrastructure overhaul.

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“…Here [8][9][10] reports the design and performance investigation of OFDM based FSO terrestrial link under the effect of different atmospheric conditions. In order to increase the data carrying capacity of the link, wavelength division multiplexing (WDM) can be used which transmits a number of information signals at the same time over the same medium using different wavelengths [11][12][13][14]. Mode division multiplexing (MDM) is an important and evolving transmission technique which capitalizes on different spatial modes of a single laser beam to transport independent data signals over the same channel.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a 4🞩20 Gbps OFDM-based FSO Link Incorporating Hybrid W-MDM Techniques

Joseph

Karthikeyan

Kuppusamy

et al. 2021

Preprint

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Free space optics has been envisioned as an crucial technique to meet the high-bandwidth requirements in future wireless information transmission links and a feasible solution to the last-mile bottleneck problem. This research work reports the designing and simulative evaluation of the performance of high-speed orthogonal frequency division multiplexing-based free space optics link by incorporating wavelength division multiplexing of 2 independent frequency channels (193.1 THz and 193.2 THz) along with mode division multiplexing of distinct spatial laser Hermite Gaussian modes (HG01 and HG03). 4 independent 20 Gbps quadrature amplitude modulated data signals are transported simultaneously under different atmospheric weather conditions using the proposed link. Also, the link performance has been investigated for increasing beam divergence angle.

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Long Range Cost-Effective WDM-FSO System Using Hybrid Optical Amplifiers

Cited by 37 publications

References 12 publications

Performance analysis of free space optical communication system under rain weather conditions: a case study for inland and coastal locations of India

Performance analysis of free space optical communication system under rain weather conditions: a case study for inland and coastal locations of India

Developing Cost-Effective and High-Speed 40 Gbps FSO Systems Incorporating Wavelength and Spatial Diversity Techniques

Performance Evaluation of a 4🞩20 Gbps OFDM-based FSO Link Incorporating Hybrid W-MDM Techniques

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