Which two technologies are combined for erbium-doped Raman amplification? (Choose two.)
A. erbium-doped fiber amplification
B. dispersion amplification
C. Raman amplification
D. coherent amplification
Which two technologies are combined for erbium-doped Raman amplification? (Choose two.)
A. erbium-doped fiber amplification
B. dispersion amplification
C. Raman amplification
D. coherent amplification