The analysis of IRBUS channel allocation for decrease four-wave mixing in DWDM system

FWM-Minimizing Channel Allocation Algorithmic Scheme for Multichannel DWDM Transmission System

“…In fact, the proposed APRUS channel allocation scheme is an improved version of the paired URAUS and IRBUS channel allocation schemes [9,18]. Specifically, the APRUS scheme is expected to satisfy the following performance metrics [6][7][8]: the number of FWM less than 4,211, the total FWM power less than -28.6dBm, the total FWM efficiency less than 1.4dB and the bit error rate below -16.3dBm.…”

“…The two arrangements of all five-factorial arrangements of the five fixed unequal channel spaces (50, 75, 100, 125 and 150GHz) in a given base unit whose FWM noise is the lowest are subsequently determined [9,18], as tabulated in Table 1. The values of ∆ f 1 and ∆ f 2 with the lowest FWM noise are then empirically determined under two constraints: first, ∆ f 1 cannot be smaller than the smallest space of the five fixed unequal channel spaces in a base unit (RUS) due to the limitation of DWDM De-MUX, and, second, ∆ f 2 cannot be larger than the next smallest space.…”

“…the asymmetrical paired repeated unequally spaced (APRUS) channel allocation scheme). In fact, the APRUS scheme is an improved version of the invert repeated base-unit unequally spaced (IRBUS) channel allocation scheme [9]. In the simulations, this research assumed that the transmission was carried out via the dispersion shift fiber (DSF) which is free of the self-phase modulation (SPM) and cross phase modulation (CPM) noises and thereby only the FWM noise would be of concern [10,11]; and that the spaces between channels must be at least 50GHz, which is one of the limitations of the optical multiplexer and de-multiplexer [12].…”