Design of WDM-Based Optical Networks-on-Chip Router for Low Insertion Loss And Crosstalk

The optical network-on-chip (ONoC) has the advantages of high bandwidth, low latency and high performance, so it has gradually become a research hotspot of on-chip communication systems. The in-depth research on wavelength division multiplexing (WDM) technology has further improved the bandwidth of on-chip communication. What follows is the influence of the crosstalk noise which is inevitable because of the structure and material of the optical device itself. Crosstalk noise has become an important factor restricting the on-chip technology of the optical interconnect. A five-port WDM-based optical router named Nerx with high optical signal-to-noise ratio (OSNR) is proposed in this paper for reducing the insertion loss and crosstalk noise. Nerx uses fewer optical switch elements and guarantees the connectivity between any two ports. Compared with Crux and Crossbar optical routers, experiments show that Nerx can achieve 20 optical channels and has a 5.6 dB improvement in average OSNR.