Coherent optical communication systems have high receiver sensitivities, high spectral
efficiencies, and high-capacity information transmission, which are widely used in free …

Emulated atmospheric turbulence effects constructed from a set of 22 Zernike modes have
been written upon a DMD micromirror array operating as a binary amplitude spatial light …

We first demonstrated bidirectional coherent beam combining and aberrations mitigating
with a 6-aperture phased fiber laser array in urban atmospheric turbulence over 2 km …

We experimentally demonstrate turbulence-resilient free-space optical (FSO) coherent
communications with multiple multiplexed data channels in different orthogonal domains …

We demonstrate digital turbulence compensation using a 12-spatial mode digital coherent
receiver with a multimode preamplifier that provides a 6-dB sensitivity improvement. This …

The next generation free-space optical communications infrastructure will need to support a
wide variety of space-to-ground links. As a result of the limited size, weight, and power on …

Coherent digital combining technology using multiple small apertures has a lot of
advantages over doing so with a single large aperture, including the effective mitigation of …

Coherent combination of laser beams from 37 fiber amplifiers in a tiled aperture
configuration has been achieved thanks to an innovative iterative process. The high …

Performance analysis is presented for a decode-and-forward protocol based mixed
radiofrequency (RF) and free-space optical (FSO) dual-hop transmission system with digital …

There are various performance advantages when using temporal phase-based data
encoding and coherent detection with a local oscillator (LO) in free-space optical (FSO) …