Design of photonic rearrangeable networks with zero first-order switching-element-crosstalk

Routing Algorithms for Packet/Circuit Switching in Optical Multi-log2N Networks

“…Network size(N) 8 Our simulation program is implemented in C on a cluster workstation -Opteron 2.0 GHz cluster.…”

“…By now, several routing algorithms have been proposed for multi-log 2 N networks, such as random routing [2]- [4], packing [2], save the unused [2], etc. It is notable that the available results on routing algorithms of multi-log 2 N networks mainly focus on the nonblocking condition analysis when a specified routing algorithm is applied [1], [2], [5]- [8]. The recent results in [2] indicate that although some routing algorithms are apparently very different, such as save the unused, packing, minimum index, etc., they actually require a same number of planes to guarantee the nonblocking property of multilog 2 N networks.…”

“…MEMS) and can switch multiple wavelengths simultaneously, it may suffer from the crosstalk problem when two optical signals pass through a common DC at the same time. A simple and cost effective approach to guaranteeing a low crosstalk in DC-based optical multi-log 2 N networks is to apply the node-disjoint (or DC-disjoint) constraint to all the connections in this network [3], [4], [8]. Thus, this paper focuses on the optical multi-log 2 N networks with the node-disjoint constraint.…”

A Class of Benes-Based Optical Multistage Interconnection Networks for Crosstalk-Free Realization of Permutations

“…When two optical signals pass through a DC, a portion of optical power in one waveguide is coupled into another waveguide, and this undesirable coupling at the DC is called the first-order crosstalk. Due to the stringent bit-error rate requirement of optical transmission facilities, elimination of crosstalk has become an important issue for making optical networks function properly [3,12,13,14]. By guaranteeing that only one input of a DC is busy while keeping the other idle at any moment, the first-order crosstalk in the DC can be avoided.…”

“…When the class of MINs is constructed as a DC-based optical switching network, a good characteristic can be yielded because the crosstalk and signal loss of an input optical flow are proportional to the number of DCs taken by the optical flow. Thus, the optical MINs based on banyan networks have been of great interest by researchers and subject to extensive study in the past years [13,17,18,20]. Since there is only a single path connecting an inputoutput pair in a banyan network, the banyan network is a blocking network.…”