  Optical reconfigurable intelligent surface (ORIS) is an emerging technology
that can achieve reconfigurable optical propagation environments by precisely
adjusting signal's reflection and shape through a large number of passive
reflecting elements. In this paper, we investigate the performance of an
ORIS-assisted dual-hop hybrid radio frequency (RF) and free space optics (FSO)
communication system. By jointly considering the physical models of ORIS, RF
channel, atmospheric turbulence, and pointing error, the closed-form solutions
of the system's precise outage probability, asymptotic outage probability and
BER have been derived. It is shown through numerical results that the
derivation results are accurate and the RF-FSO links with ORISs show a slightly
worse performance than the traditional RF-FSO links. Based on theoretical
analysis and simulation results, the system design and effect of each parameter
have been discussed.
