Even though technologies such as 100G and 400G have now come on the market, optical amplifiers still present challenges. But EDFA, YEDFA, and DWDM amplifiers are designed over a broad range of pump powers and provide ideal solutions in access, metro, and long haul and submarine networks. Lightera’s C-Band, L-Band, and amplified spontaneous emission (ASE) sources are the best in the industry for Erbium-doped Fiber (EDF). Lightera also provides Erbium-Ytterbium (EY) Fiber and gain blocks for high-power amplifiers in the CATV market.