This manuscript reviews recent progress in optical frequency references and optical
communication systems and discusses their utilizations in global satellite navigation …

Future spacecraft will require a paradigm shift in the way information is transmitted, in light of
the continuous increase in the amount of data requiring space links. Current radio-frequency …

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

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 …

In recent years, the coherent beam combining technique for laser transmission in
atmosphere has been widely investigated, while the study of this technique's application in …

Binary phase-shift keying optical transmission in the C-band with coherent intradyne
reception is demonstrated over a long-range (10.45 km) link through the atmosphere. The …

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 …

Free-space optical communications links have the perpetual challenge of coupling light from
free-space to a detector or fiber for subsequent detection. It is especially challenging to …

In free space optical communication systems, multi-aperture coherent optical receivers
based on digital coherent beam combining (D-CBC) technique can provide exceptionally …

Space-based VLBI imaging can dramatically improve state-of-the-art astronomical radio-
imaging resolution by enabling significantly longer baseline distances and eliminating …