A novel self-routing address scheme for all-optical packet-switched networks with arbitrary topologies

Abstract

Pure all-optical packet-switched networks in which both header processing and packet routing are carried out in the optical domain overcome the bandwidth bottlenecks of optoelectronic conversions and therefore are expected to meet the needs of next generation high speed networks. Due to the limited capabilities of available optical logic devices, realizations of pure all-optical packet-switched networks in the near future will likely employ routing schemes that minimize the complexity of routing control. In this paper, we propose a novel self-routing scheme that identifies the output ports of the nodes in a network instead of the nodes themselves. The proposed address scheme requires single bit processing only and is applicable to small to medium size pure all-optical packet-switched networks with arbitrary topologies. Unlike traditional self-routing schemes, multiple paths between two nodes can be defined. Hierarchical address structure can be used in the proposed routing scheme to shorten the address.

Performance of multicast in WDM slotted ring networks

“…We denote this set by the fanout set, F s , where the fanout stands for the number of destinations of the multicast packet. A self routing scheme [8], can be adopted to encode F s into the slot's header. Thus, each node is associated with a bit in the address header.…”

All-optical header processing using an injection-locked Fabry-Pérot laser diode

“…The output of the FP-LD at c is low (OFF state). Since the switching action is completely determined by the optical processing of a single bit in the header of the data packet, the proposed scheme can be used to implement a recently proposed self-routing address format for all-optical packet switched networks with arbitrary topologies [7]. Figure 3 shows the experimental setup for the proposed all-optical header processing scheme.…”

Simulation of All-Optical Routing Employing PPM-based Header Processing in Photonic Packet Switched Core Network

“…A number of alloptical header processing and switching schemes have been developed such as all-optical self-routing [7], all-optical bypass router [8] and all-optical label swapping [9,10]. In alloptical self-routing, the address bits (0/1) within the packet header are extracted at the intermediate router to directly control the on/off states of the router optical switches.…”