EDFA- and RAMAN-Amplifiers

EDFA- and RAMAN-Amplifiers

Amplifier (Booster)

to increase the output power at the beginning of the link


to compensate the attenuation of the link

Pre-Amplifier (PreAmp)

to high input sensitivity. Increasing the power level at the end of the transmission line according to receiver sensitivity


to increasing the power level, at the end of the link by use of Raman scattering. Amplification is achieved with improved OSNR behavior and reduction of nonlinear impairments


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
Amplificatiom:         20 - 40 dB
Output power:         14 - 23 dBm

Functional Principle of EDFA amplifiers



RAMAN-Amplifier Principle

A Raman-Amplifier uses the effect of Raman scattering. For this purpose, light with high power and a corresponding wavelength is pumped into the fiber. Amplification is performed if the incoming wavelength lies within the Raman gain spectrum.

Wavelength area:   1300 - 1600 nm
Amplificatiom:         10 - 15 dB

Functional Principle of RAMAN amplifiers
Contact Person
Christian Baumeister
Director International Sales
+49 6103 834 83 180


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