DWDM EDFA Amplifier (Booster), to increase the output power at the beginning of the link

DWDM EDFA Pre-Amplifier (PreAmp), high input sensitivity. Increasing the power level at the end of the transmission line according to receiver sensitivity

DWDM EDFA Inline-Amplifier, to compensate the attenuation of the link

DWDM RAMAN-Amplifier, increasing of the power level, at the end of the link by using the Raman scattering. Amplification is achieved with improved OSNR behavior and reduction of nonlinear effects

EDFA (Erbium Doped Fiber Amplifier) principle

EDFAs use a pump laser (980 nm or 1480 nm) to bring up electrons to a higher energy level. If signal amplification is achieved by emitted photons of the same signal wavelength with the help of stimulated emission.

Wavelength:           C-Band and L-Band
Amplification           20 - 40 dB
Output power:        14 - 23 dBm

RAMAN-amplifier principle

A Raman amplifier is using the effect of Raman scattering. For this purpose, light with high power and a corresponding wavelength is pumped into the fiber. Is the incoming wavelength within the Raman gain spectrum an amplification of light is enabled.

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