Abstract
Orbital angular momentum (OAM) beams are basically twisted beams with infinite number of possible orthogonal OAM states. A 640 Gbps (4 × 16 × 10 Gbps) data transmission over 180 m FSO link, implemented by multiplexing of 4 OAM modes, each containing 16 wavelength channels has been proposed and demonstrated. An optical frequency comb generator, containing a single laser source is used as broadband laser source. Low power penalty of 2.91 dB at a BER value < 10–9 with very good Q-value (> 5.5) and open eye diagrams have been achieved, which reveal the potential of the proposed system for free space communication.
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Acknowledgements
We would like to acknowledge Sidho-Kanho-Birsha University, Purulia, India for infrastructural support and SERB Govt. of India (CRG/2019/006580) for financial support to carry out the research.
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SERB, Govt. of India, CRG/2019/006580.
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Dutta, B., Sarkar, N., Atta, R. et al. 640 Gbps FSO data transmission system based on orbital angular momentum beam multiplexing employing optical frequency comb. Opt Quant Electron 54, 132 (2022). https://doi.org/10.1007/s11082-021-03509-3
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DOI: https://doi.org/10.1007/s11082-021-03509-3