Transmission Window Partition Mechanism in a Four-Wave Mixing Based WDM/DWDM Network

Abstract

Abstract-This research work proposes an efficient four-wave mixing (FWM) based routing and wavelength assignment (RWA) scheme for the improvement of connection blocking probability in WDM/DWDM networks. However, the traditional RWA schemes are less efficient for the better quality of transmission, and the proposed RWA scheme partitions the entire fiber transmission window into N number of bands and assigns wavelength randomly from one of the band based on connection length. Finally, the analytical result proves that the mechanism reduces the FWM effect significantly in terms of connection blocking probability with higher partition, lower FWM effect and better performance.

Quality Analysis in Phase Modulated Radio over Fiber in WDM/DWDM Network

“…Simulation results of connections accepted versus source-destination (s, d) pairs using MOBWA, four band/8 band CIOBWA with assigned wavelength being 15, 20 and 25 considering (2,8) and (4,9) as sourcedestination pairs, are presented in Figure 8 The number of accepted connections is higher for eight bands CIOBWA than for four bands CIOBWA, which in turn has higher accepted connections than MOBWA. It can be clearly concluded about how with increased assigned wavelengths; the number of accepted connections has improved for all WA techniques.…”

“…Simulation results of blocking probabilities using MOBWA, four bands/ eight bands CIOBWA with assigned wavelength being 15, 20 and 25 for source-destination node pair as (4,9), are presented in Figure 7(a), (b), (c).…”

“…Here CIB and IB are used for lower distance, whereas COB & OB are used for longer distance connections. 8 Band IOBWA is similar to that proposed by Mahapatra et al [9]. In this WA technique, transmission window is divided into eight bands with two of each IB, CIB, OB, and COB.…”