Erbium-doped fiber amplifiers performance, especially designed with high doping concentration to operate at the optical L-band, were experimentally characterized in terms of gain, ripple, and noise ...

Ultra-long-haul WDM/SDM transmission based on 200 Gbit/s/ch over 5,040 km using cladding pumped seven-core EDFA has been successfully demonstrated for the first time. In addition, the feasibility of ...