The stochastic parallel gradient descent (SPGD) algorithm is one of the promising
approaches for performing an efficient coherent beam combining (CBC) for power-scaling of …

The coherent laser signals of optical wireless communication suffer dramatic intensity
fluctuations due to the atmospheric turbulence effect. A larger receiver aperture could only …

Collecting light using multiple small apertures offers a lot of advantages over doing so using
a single large aperture, including the effective mitigation of scintillation under strong …

In free-space optical communication links, the combining of optical signals from multiple
apertures is a well-known method to collect more power for improved sensitivity or mitigation …

We experimentally demonstrate a free-space optical communication system utilizing seven-
aperture direct-detection receiver. We estimate the instantaneous SNR from the AC-coupled …

We demonstrate the principle of generating the approximate spherical convergent light
waves by wavefront manipulation for conformal transmission and coherent beam combining …

We first demonstrate atmospheric turbulence compensation and optical coherent combining
using a phased fiber laser array with the largest channels of sub-apertures. With multi …

Atmospheric turbulence severely degrades the optical wavefront of a propagating beam,
which greatly reduces the coupling efficiency of free-space optical (FSO) receivers. Among …

The combination of numerous signals for a spatial diversity Free-Space Optical
Communication (FSOC) framework can be actualized based on fiber-optic devices or digital …

The growth of optical links in free space leads to systems with data rates of tens of gigabits/s.
To reach such data rates, one of the most frequently considered approaches is to couple the …