Abstract
The helical phase front of the light beam carry orbital angular momentum (OAM) with azimuthally phase dependence. OAM beams of different topological charges are generated using spatial laser sources and vortex lens. A wavelength division multiplexing (WDM) based architecture employing different l-valued OAM beams having different modes and wavelengths to realize 100Gbps data transmission over free space is proposed and successfully demonstrated. 10X10 Gbps data-rate is fruitfully transmitted over 3200 m free space and tested for different environmental scenario such as clear weather, haze, rain and fog. A very low bit error rate value of 5 × 10−9, good Q-value of 5.4 with excellent eye-diagram are achieved. This proposed configuration with power penalty of 2.4 dB, which evidenced that the architecture is suitable for free space data transmission. The transmission performance is also enhanced due to sufficiently low crosstalk (~ −25 dB) compared to WDM technique without employing OAM beams.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
Authors would like to thank Sidho-Kanho-Birsha University, Purulia, West Bengal, India for providing the infrastructural support and SERB, CRG/2019/006580, Govt. of India for financial support to carry the research work.
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SERB, Govt. of India, CRG/2019/006580.
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All authors have participated in (a) conception and design, or analysis and interpretation of the data; (b) drafting the article or revising it critically for important intellectual content; and (c) approval of the final version.This manuscript has not been submitted to, nor is under review at, another journal or other publishing venue.The authors have no affiliation with any organization with a direct or indirect financial interest in the subject matter discussed in the manuscript.
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Dutta, B., Kuiri, B., Santra, S. et al. 100 Gbps Data Transmission Based on Different l-valued OAM Beam Multiplexing Employing WDM Techniques and Free Space Optics. Opt Quant Electron 53, 515 (2021). https://doi.org/10.1007/s11082-021-03154-w
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DOI: https://doi.org/10.1007/s11082-021-03154-w