Current trends in communications indicate that multicasting is becoming increasingly popular and important in
networking applications. Since multicasting can be supported more efficiently in optical domain by utilizing the inherent
light-splitting capacity of optical devices, such as optical splitters, than by copying data in electronic domain, issues
concerning running multicast sessions in the all-optical networks have received much attention in recent years. In this
paper, different multicasting schemes and their performance in the Optical Packet Switched networks are investigated,
including the parallel mode, serial mode, and hybrid mode multicasting schemes. Computer simulation results show that
compared with the parallel-mode and serial-mode multicasting schemes, hybrid-mode multicasting scheme is the best
way to deliver multicast sessions in the Optical Packet Switched networks due to its highest performance.
In this paper, both numerical and simulated modeling techniques were applied to analyze the influence on the
performance of the token-based Optical Burst Transport (OBT) ring networks caused by the parameters, such as the
minimum and maximum burst length, the circumference of the ring, and so on.
We first analyze the issue by numerical analysis in the case that each node has only one token. After that, we confirm the
analytical results and made further researches in the case that each node has multiple tokens by simulated analysis. All
the results show that to design a high-performance token-based OBT ring network, not only the common parameters,
such as the number of nodes and wavelengths, and the circumference of the ring, but also the special parameters, such as
the minimum and maximum burst length, and the offset time should be taken into account.
Furthermore, a testbed of Three-node Token-based OBT ring network Using Fixed Transmitter and Tuneable Receiver
(FTTR) is constructed. With it, the variations of the network performance caused by the maximum burst length are
This paper investigates some key issues in designing an OBS edge node, such as burst assembler and burst scheduler, and then demonstrates a prototype of the OBS edge node based on current technology level. Experimental results verify various modules in the proposed OBS edge node.