EDFA Amplifier

Erbium-Doped Fiber Amplifier (EDFA) is an optical amplifier used in the C-band and L-band, where the loss of telecom optical fibers becomes lowest in the entire optical telecommunication wavelength bands. 
Invented in 1987, EDFA is now most commonly used to compensate for the loss of an optical fiber in long-distance optical communication. Another important characteristic is that EDFA can amplify multiple optical signals simultaneously, and thus can be easily combined with WDM technology.

Types of EDFA Amplifier
01- 1U EDFA Equipment
1U EDFA Equipment has a high stability output power EDFA. The stability Pump Laser and unique ATC(automatic temperature control) and AGC (automatic gain control) circuit are employed in it as the key components to ensure the high stability and reliability of output power. 
02- DWDM EDFA Card
The multi-channel erbium-doped fiber amplifier(EDFA) features stable output power, low noise, and power consumption. The components of the product are a high-availability pump laser and high-performance gain flattening filters.
03- DWDM EDFA Card with VOA
DWDM EDFA Card with VOA input and output signals are sampled and monitored with a feedback circuit. AGC (Automatic Gain Control) circuit is designed into the amplifier to ensure high output power stability and reliability.

EDFA advantages and disadvantages
The main advantage of cwdm EDFA is a high gain, wide bandwidth, high output power, high pumping efficiency, low insertion loss, and not sensitivity to the polarization state.

EDFA Amplifier FAQs
What is edfa amplifier?
An erbium-doped fiber amplifier (EDFA) is a device that amplifies an optical fiber signal. It is used in the telecommunications field and in various types of research fields.
How edfa working ?
EDFA amplifier working principle works on the principle of stimulating the emission of photons. With EDFA, an erbium-doped optical fiber at the core is pumped with light from laser diodes. This type of setup in telecom systems can help with fiber communications, for example, boosting the power of a data transmitter. 
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