Demonstration of Turbulence Resiliency in a Mode-, Polarization-, and Wavelength-Multiplexed Free-Space Optical Link using Pilot Tones and Optoelectronic Wave Mixing

We experimentally demonstrate the turbulence resiliency in a mode-, polarization, and wavelength-multiplexed free-space optical link using pilot tones and optoelectronic wave mixing. 8 multiplexed channels combined with 2 OAM modes, 2 polarizations, and 2 wavelengths are demonstrated in a 4-Gbit/s QPSK link.