Idealphotonics' has launched an erbium-doped fiber ASE light source, a broadband light source based on the principle of spontaneous emission amplification (ASE) in erbium-doped fiber. Its output spectrum covers 1520-1570 nm (C-band), primarily used for fiber optic sensing and communication testing.It outputs a broadband spectrum of 1520-1570 nm (bandwidth > 50 nm) and exhibits high power stability (fluctuation < 0.5 dB), but suffers from poor coherence. It is mainly used for fiber optic sensing and communication testing.