Free-space optical (FSO) communication systems enable high-bandwidth data transmission by propagating modulated light beams through the atmosphere or vacuum. These systems combine the advantages of ...
Quantum cascade lasers (QCLs) have emerged as pivotal sources for free-space optical communication (FSO) in the mid-infrared spectral region. Owing to their intrinsically narrow linewidth, high output ...
Figure 1: NICT's 7.4 km, 2 Tbit/s horizontal propagation experiment (April 2025). The ST terminal was used as the transmitter and the FX terminal as the receiver. The terminals exchanged pseudo-random ...
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