Name
Abstract | ||
|---|---|---|
Current architectures for packet switches are ap- proaching the limit of electronic switching speed. This rakes the question of bow best to utilize reeent advances in photonic tech- nology in order to enable higher speed operation. In thii paper, we introduce cascoded opticol de&y line (COD) architectures for ultra high speed packet switching. The COD arehkctures utitiie an extremely simple distributed eleetmnic control algorithm to configure the states of 2 x 2 photosdc switches and use optical fiber delay lines to temporarily buffer paeketa if necessary. The simplicity of the arebiteetures may tdso make them suitable for "lightweight" atl-electronic implementations. For optical im- plementations, the number of 2 x 2 photonic switches used is a significant factor determining cost. We present a "baae~me" architecture for a '2 x 2 buffered packet switch that is work conserving (i.e. nonidting) and has the first-in, first-out (FIFO) property. If the arrival proeeases are independent and without memory, the maximum utilisation factor is (J, and the maximum acceptable packet 10ss probabllit y is c, then the required number of 2 x 2 photmdc switehea is ()(log(f)/ log (-~)), where ; = p?/ (p2 + -t - ~~1 ). If we modii the baseliie architecture by changing the delay line lengths then the system is no longer work conserving and loses the FIFO property, but the required number of 2 x 2 photonic switches is reduced to ()( log (log(F)/ log(T))). The required number of 2 x 2 photonic switches is essentiality insensitive to the distribution of packet arrivals, hut long delay tines are required for bursty traflic. |
Year | DOI | Venue |
|---|---|---|
1996 | 10.1109/90.503758 | IEEE/ACM Trans. Netw. |
Keywords | Field | DocType |
Packet switching,Optical packet switching,Optical switches,Optical buffering,Delay lines,High speed optical techniques,Photonics,Ultraviolet sources,Distributed control,Optical control | Switching time,Telecommunications network,FIFO (computing and electronics),Optical switch,Computer science,Network packet,Computer network,Packet loss,Packet switching,Photonics | Journal |
Volume | Issue | ISSN |
4 | 1 | 1063-6692 |
Citations | PageRank | References |
41 | 5.77 | 7 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rene Cruz | 1 | 1711 | 256.63 |
| Jung-Tsung Tsai | 2 | 46 | 8.66 |