100 Gbit/s PAM-16 Transmission in the 2-µm Band over a 1.15-km Hollow-Core Fiber

We demonstrate the first low-latency 2 -µm-band PAM signal transmission using a hollow-core fiber (HCF). PAM-8 and PAM-16 signals are successfully transmitted over 1.15-km HCF with line rates of 96 Gbit/s and 100 Gbit/s, respectively.