The EDFA-C-D20-VLGC-DM is a gain-controlled, double-stage Erbium-doped fiber amplifier with a variable low gain supporting amplification of up to 80 channels in the Cband region. The EDFA-C-D20-VLGC-DM can be used as preamplifier, booster or inline amplifier.

The first gain block works as a preamplifier, the second as a booster amplifier. The midstage access allows the amplifier to connect to a dispersion compensation module without effecting the line budget. A variable optical attenuator (VOA) at the midstage access controls and adjusts attenuation from 12 to 27 dB depending on whether a dispersion compensating module or a jumper connects the two gain blocks. The gain and transient controller regulates the pump laser to stabilize the ratio between output and input power, i.e. the gain of the amplification stage. The power level of the lower power input signal and outgoing amplified signal could be monitored.

#2132

Features 

• Wavelength-independent amplification 

• Variable-gain amplification 

• Gain and transient controlled 

• Automatic attenuation adjustment at the midstage access using a VOA 

• 4 HP wide plug-in module 

• Operates as a preamplifier, booster or inline amplifier 

• Supports the channel modules operating with ALS 

• Standby mode •

 Power level monitoring of the amplified signal