A METHOD AND SYSTEM FOR POLARIZED SIGNALLING IN AN OPTICAL SWITCHED NETWORK

摘要

A method for signaling in an optical packet switched network, wherein unicast and multicast traffic is modulated with different state of polarization, incoming signals are splitted according to the state of polarization, unicast signals are guided to a unicast switch (10), multicast signals are guided to a multicast switch (15), output signals from the unicast switch (10) are combined with output signals from the multicast switch (15) in polarization beam combiners (20, 25).