High-spectral efficiency DWDM transmission of 100-Gbit/s/lambda IM/DD single sideband-baseband-Nyquist-PAM8 signals

107.52-Gbit/s SSB-Nyquist-PAM8 signaling is realized for the first time, achieving high-spectral efficiency of 4.30 bit/s/Hz (net SE 3.58), with intensity-modulation and polarization-independent conventional direct-detection and the longest 80-km SSMF transmission of PAM8 signals.