Mathematical Framework for the Performance Evaluation of an All-Optical Packet Switch with FDL´s Utilization

Nowadays all-optical network is the most perspective. Traffic transmits in optical networks by commutation technology, one of which is packets commutation. WDM and full wavelength conversion service for effective using of optical fiber bandwidth. A vital problem in optical networks is collision initiation, when ever two or more packets are switched on the same output wavelength, at the same time. FDLs are used for solving this problem. They allow to delay packets for definite time, preventing packets dropping and reducing packet blocking when all output wavelengths are engaged. In this paper we propose a mathematical framework for the performance evaluation of an all-optical packet switch, including fiber delay lines and wavelength reservation. WDM and full wavelength conversion are also used. We present the formulas for the steady-state blocking probabilities and the PBP calculation in one destination fiber. Numerical analysis of these characteristics is also provided.

all-optical network (AON), optical switch, optical packet switching (OPS), wavelength division multiplexing (WDM), fiber delay lines (FDL)