Abstract
We demonstrate a 200-Gbit/s space-division multiplexing system using two Laguerre–Gaussian (LG) beams with different radial indices ( and ). With a proper design of the radial change of the demultiplexing pattern, the channel crosstalk could be minimized and both channels could achieve a bit error rate of . Moreover, the multiplexing of four LG beams with different azimuthal indices and different radial indices (e.g., , , , and beams) is also demonstrated with a channel crosstalk, potentially enabling a 400-Gbit/s data transmission.
© 2016 Optical Society of America
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