In this article, we demonstrate a real-time implementation of the digital combining of 10
Gbit/s signals received by a multi-aperture terminal over a 3 km free-space optical link. The …

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 …

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 …

An important component of the future communication network will include satellite-to-ground
communication technology. In the meantime, the community of communication network also …

We improved the coupling efficiency to the free-space optical receiver by using a few-mode
fiber with the optical signal distorted with a turbulence emulator. We demonstrated digital …

Dual-hops transmission is a growing interest technique that can be used to mitigate against
atmospheric turbulence along the Free Space Optical (FSO) communication links. This …

We report investigations on the mode diversity receiver applied in optical links from low-
earth-orbital satellites to a ground terminal. We numerically simulated temporal power …

Atmospheric turbulence causes severe performance degradation in free-space optical
communication links. However, by using a reliable low-bandwidth wireline or RF link in …

Compared with the single-aperture system, the multi-aperture coherent digital combining
system has the technical advantage of the effective mitigation of deep fading under strong …

Spatial diversity reception is an effective technology to mitigate the atmospheric turbulence
effect on the performance of the coherent free space optical (FSO) communications …