Terabit super-channel transmission with an integrated microcomb and low-bandwidth electronics

We experimentally demonstrated a super-channel transmission rate of 1.365 Tbit/s using a Si₃N₄ microcomb laser source. The 682.5 GBd super-channel is generated using an integrated single-chip laser based on Enlightra's system-level comb (SLC) platform. At the receiver, the guard-band-free super-channel with a bandwidth of 682.5 GHz was detected without optical filtering by 3.25 GHz electronics. The proposed approach incorporates low-bandwidth electronics with integrated photonics to deliver high data rates combined with spectral and power efficiency. These results establish a practical route towards scalable terabit optical links for future high-capacity data centers and metro-network applications.