Free space laser telecommunication through fog
G. Schimmel, T. Produit, D. Mongin, J. Kasparian & J.-P. Wolf
Atmospheric clearness is a key issue for free space optical communications (FSO). We present an active method to achieve FSO through clouds and fog, using ultrashort high-intensity laser filaments. The laser filaments opto-mechanically expel the droplets out of the beam and create a cleared channel for transmitting high-bit-rate telecom data at 1.55 μm. The low energy required for the process allows considering applications to Earth–satellite FSO and secure ground-based optical communication, with classical or quantum protocols.
doi : 10.1364/OPTICA.5.001338