In optical communication network, fiber amplifier is an optical amplifier that amplifies optical signals directly in optical communication system.In communication systems using optical fibers, a technique for directly amplifying optical signals without converting them to electrical signals.

      Erbium-doped fiber is a fiber doped with a small amount of erbium (Er) ions in quartz fiber. It is the core of erbium-doped fiber amplifier.Since the late 1980s, the research of erbium-doped fiber amplifier has made great breakthroughs.WDM technology greatly increases the capacity of optical fiber communication.It has become the most widely used optical amplifiers in optical fiber communication。

Working wavelength： 1528～1563nm；

Input optical power range:-24～+2dBm；

Output light power range:-4～+20dBm；

gain span：+17～+23dB；

Gain flatness：≤1.5dB；

Noise factor：≤5.5dB；

Polarization-dependent gain：≤0.3dB；

Polarization mode dispersion：≤0.3ps；

Input/output echo attenuation：≥45dB

Working temperature：-5°C to +55°C；

Keep the temperature：-40°C to +70°C；

 Humidity requirements：≦ 85%RH；