A hybrid wireless optical and radio frequency (RF) communication link
utilizes parallel free-space optical and RF paths for transmitting data
and control and status information. The optical link provides the primary
path for the data, and the RF link provides a concurrent or backup path
for the network data, as well as a reliable and primary path for the
control and status information. When atmospheric conditions degrade the
optical link to the point at which optical data transmission fails, the
hybrid communication link switches to the RF link to maintain
availability of data communications. The switch may occur automatically,
based on an assessment of the quality of the optical signal communicated
through the optical path.