Multi-Span Transmission over 65 km 38-Core 3-Mode Fiber

We demonstrate multi-span transmission over 65 ( $5\times 13$ ) km few-mode multi-core fiber by transmitting $368\times 24.5$ GBaud C- and L-band signals with QPSK, 16- or 64 QAM modulation. We analyze each core-combination's transmission channel characteristics and identify mode-dependent loss as the main performance limitation.