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EDFA is an optical repeater device that is used to boost the intensity of optical signals being carried through a fiber optic communications system. An optical fiber is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another frequency. Erbium had little commercial uses before the age of fiber-optic telecommunications. Now it is an important constituent of signal repeaters in long-distance telephone cables. Fiber amplifiers are developed to support dense wavelength division multiplexing (DWDM) and to expand to the other wavelength bands supported by fiber optics. The fiber is highly transparent at the erbium lasing wavelength of two to nine microns. When pumped by a laser diode, optical gain is created, and amplification occurs.

Flattened gain
Excellent noise performance
Large dynamic range
State-of-the-art gain and power transient suppressionAdvanced control and monitoring
High output power (up to 26dBm)
Class 1M*laser safety (for output) 21dBm APR mechanisms are used)
GR1312 qualification
RS232 and I2C communication, full set of control options and alarms
Telecom/cable TV/enterprise
Booster amplifiers/in-line amplifiers/pre-amplifiers
Dynamic, reconfigurable networks
High capacity 100Gb/s, 40Gb/s, and 80+ channel WDM networks
Defense, utility, RF and radio-over-fiber, sensor applications, and laboratory equipment.