New Trends in Amplifiers and Sources via Chalcogenide Photonic Crystal Fibers
Figure 3
(a) SEM image of the fabricated chalcogenide PCF, (b) optimal gain , (c) optimal length , and (d) noise figure versus signal wavelength λ s for three different input pump power levels: mW (dot curve), mW (broken curve), and (0) = 300 mW (full curve). Input signal power (0) = 0.1 μW, erbium concentration = 5.76 1024 ions/m3, and doped region radius = 5 μm [19, 25].
