Abstract
For efficient utilization of bandwidth in optical packet switching,
the guard time ${T}_{\rm
g}$ between packets should only be a small fraction of the
packet transmission time ${
T}_{\rm d}$. Since the guard time ${ T}_{\rm g}$ of existing packet switching
approaches must be larger than the reconfiguration time ${T}_{\rm sw}$ of optical switches, this
imposes a stringent demand on the switch reconfiguration time ${T}_{\rm sw}$ as the transmission rate
of optical fibers increases. By using batch transfer of packets or multiple
switching fabrics in parallel, the requirement on the switch reconfiguration
time can be significantly relaxed. The utilization of the transmission links
can be greatly improved because the guard time between packets is no longer
constrained by the switch reconfiguration time.
© 2009 IEEE
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