Formal Analysis of Crosstalk Noise in Mesh-Based Optical Networks-on-Chip with WDM

Fat‐tree‐based optical networks‐on‐chip with WDM: crosstalk noise exploiting

“…1b shows WOTAR optical router which is a 4 × 4 optical router used in FONoCs_W, it consists of basic photonic switching elements with WDM, optical waveguide, waveguide bending and crossings. These basic photonic switching elements with WDM include WDM-based parallel switching element (WPSE) and WDM-based crossing element, and have been analysed in detail [17].…”

“…where L S is the power loss of basic optical switching elements (BOSEs) inside optical router R(x,l), which can easily be derived according to Xie et al [17]. L b n 1 and L c n 2 denote all of the waveguide bending losses and all of the waveguide crossing losses in R(x,l), (n 1 and n 2 show the loss parameters' accumulation).…”

“…Meanwhile, their OSNR associated with optical signal λ n can be expressed as (17), in which P in λ n L a/b λ n are the power of optical signal λ n obtained at the end of link a or b. The denominators of equations calculate the total of crosstalk noise got at the terminal of the two links.…”

“…In (17), refer to the first half part, of which the latter half part of link a is shown by (19) and can be written as (20) simply. Similarly, others can be expressed as (21).…”

“…Furthermore, the non-linear FWM crosstalk noise is also a nonnegligible factor for performance degradation of ONoCs_W, needs to be considered to formal analysis. Xie et al [17] has presented formal analysis of crosstalk noise including the FWM crosstalk noise and the linear crosstalk noise in mesh-based ONoCs_W. However, fat-tree-based ONoCs (FONoCs) have relatively better performance in throughput, power efficiency and latency compared to other networks [18], FONoCs_W are hopeful to accelerate the future development of MPSoCs.…”