Performance Analysis of Spatially Multiplexed Hybrid BPSK-MPPM Modulated Optical Interconnect System Using Triangular Index Multicore Fiber

A design concept of spatially multiplexed hybrid modulation scheme by combining binary phase shift keying (BPSK) and multi-pulse pulse position modulation (MPPM) is proposed to scale the network capacity of next-generation optical interconnects (OIs). To keep pace with the exponential traffic growth of data-centric operations and edge coupling requirement of distributed computing system, rectangular arrayed 8-core multicore fiber (MCF) with different index profile is investigated in detail. The effect of quantitative and qualitative index profiled parameters on spatial overlap of field distribution, crosstalk and error probability performance are thoroughly discussed. Furthermore, the performance of new hybrid BPSK-MPPM modulated MCF OI system is compared with the traditional modulation scheme for different index profile. It is shown that hybrid BPSK-MPPM interconnect system using triangular index MCF gives rise to better error performance and drastic reduction in crosstalk suitable for next era of high-end computing applications.