266.1-Tbit/s Repeatered Transmission over 90.4-km 6-Mode Fiber Using Dual C+L-Band 6-Mode EDFA

We demonstrate 6-mode and 580-wavelength multiplexed transmission with an in-line dual C+L-band cladding-pumped few-mode EDFA. A total capacity of 266.1 Tbit/s is achieved over a 90.4-km transmission line at a spectral efficiency of 36.7 bit/s/Hz.