Crosstalk noise and bit error rate analysis for optical network-on-chip

Abstract

Crosstalk noise is an intrinsic characteristic of photonic devices used by optical networks-on-chip (ONoCs) as well as a potential issue. For the first time, this paper analyzed and modeled the crosstalk noise, signal-to-noise ratio (SNR), and bit error rate (BER) of optical routers and ONoCs. The analytical models for crosstalk noise, minimum SNR, and maximum BER in meshbased ONoCs are presented. An automated crosstalk analyzer for optical routers is developed. We find that crosstalk noise significantly limits the scalability of ONoCs. For example, due to crosstalk noise, the maximum BER is 10 -3 on the 8×8 meshbased ONoC using an optimized crossbar-based optical router. To achieve the BER of 10 -9 for reliable transmissions, the maximum ONoC size is 6×6. A novel compact high-SNR optical router is proposed to improve the maximum ONoC size to 8×8.

3-D Mesh-Based Optical Network-on-Chip for Multiprocessor System-on-Chip

“…Regardless of the network size, at most three MRs will be powered on in any XY-routing optical path in a 2-D optical mesh or torus, including one MR for injection at the source, one MR for a turn during the routing, and one MR for ejection at the destination node. Based on Cygnus, a more compact 5 × 5 nonblocking optical router Crux, was proposed [23]. It inherits the passive routing feature of Cygnus.…”

“…In order to reduce network resources, passiverouting 5 × 5 optical routers Crux and the modified Crux (Fig. 5) [23], are proposed to be used at the network edges. Crux uses 14 MRs and the modified Crux uses two less MRs.…”

Scalability of silicon photonic microring based switch

“…Prior studies have been conducted to estimate the maximal scalability of ring based switches, considering different cascading architectures [8,9]. However, to the best of our knowledge, analyses conducted so far model the deleterious effects of the switches based on extrapolations from lab-measurements of single devices.…”

A crosstalk aware routing algorithm for Benes ONoC

“…Thus, the performance of ONoC is considerably affected by crosstalk. [1] analyzes the crosstalk in Mesh, but it is not suitable for Benes ONoC. Benes provides several paths for one communication pair.…”