- A pump-LD (Laser Diode) is an excitation light source for a fiber amplifier used in optical communication networks.
Types of pump-LDs include an FP-LD (Fabry-Perot Laser Diode) and FBG-LD, which connects fiber with FBG (Fiber Bragg Grating) formed on the FP-LD and provides high wavelength stability and narrow linewidth by selecting the wavelength. Spectral examples of each are indicated below.
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