  A scheme of single-photon multi-port router is put forward by coupling two
optomechanical cavities with waveguides. It is shown that the coupled two
optomechanical cavities can exhibit photon blockade effect, which is generated
from interference of three mode interaction. A single-photon travel along the
system is calculated. The results show that the single photon can be controlled
in the multi-port system because of the radiation pressure, which should be
useful for constructing quantum network.
