2 Tbit/s free-space data transmission on two orthogonal orbital-angular-momentum beams each carrying 25 WDM channels

We demonstrate a 2 Tbit/s free-space data link using two orthogonal orbital angular momentum beams each carrying 25 different wavelength-division-multiplexing channels. We measure the performance for different modulation formats, including directly detected 40 Gbit/s nonreturn-to-zero (NRZ) differen...

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Bibliographic Details
Published in:Optics letters 2012-11, Vol.37 (21), p.4753-4755
Main Authors: Fazal, I M, Ahmed, N, Wang, J, Yang, J-Y, Yan, Y, Shamee, B, Huang, H, Yue, Y, Dolinar, S, Tur, M, Willner, A E
Format: Article
Language:English
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Summary:We demonstrate a 2 Tbit/s free-space data link using two orthogonal orbital angular momentum beams each carrying 25 different wavelength-division-multiplexing channels. We measure the performance for different modulation formats, including directly detected 40 Gbit/s nonreturn-to-zero (NRZ) differential phase-shift keying, 40 Gbit/s NRZ on-off keying, and coherently-detected 10 Gbaud NRZ quadrature phase-shift keying, and achieve low bit error rates with penalties less than 5 dB.
ISSN:0146-9592