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MAFA 5000 Series Erbium Doped Fiber Amplifier (EDFA) Preamplifier

The EMCORE MAFA 5000 Series Micro Erbium Doped Fiber Preamplifier gain block module is an ideal building block for OEM systems integration where there is a requirement to pre-amplify a 1550 nm signal for a broad range of applications including RF/microwave fiber optic links, fiber optic delay lines, sensing and control systems, and more. The family of MAFA 5000 EDFA gain blocks is designed to meet the most demanding noise performance requirements of fiber optic links and perform all the functions required of an optical preamplifier for system integration.

In order to achieve extremely low Noise Figures (NF), a preamplifier’s input losses must be minimized. The MAFA 5000 Series Micro Erbium Doped Fiber Preamplifier design removes input isolation and input monitoring normally found on traditional booster amplifier designs to this end.

MAFA 5000 Series Micro Erbium Doped Fiber Preamplifier gain blocks provide output optical isolation for stable operation. The output optical signals are detected for monitoring and control. The pump laser bias current is controlled with constant current.

The MAFA 5000 has built-in monitors for all critical operating parameters, and generates alarms when parameters exceed established thresholds. The optical output of the MAFA 5000 Series Micro Erbium Doped Fiber Preamplifier gain blocks can be split into multiple ports (2, 3 or 4) by an optional internal splitter.

The compact mechanical footprint of the MAFA 5000 allows use of this unit in constrained space environments and high density applications.


  • Full function fiber optic preamplifier ready for integration
  • Wavelength range: 1530 nm to 1562 nm
  • Low noise figure (Typ ≤ 3.5 dB)
  • Pin: ≤ –4.0 Bm
  • Pout saturated: 14 dBm, 17 dBm
  • Small signal gain ≥ 37 dB
  • RS-232 monitor and control interface
  • Low electrical power consumption
  • Output isolation > 35 dB
  • Polarization dependent gain (PDG) < 0.5 dB
  • Polarization mode dispersion (PMD) < 0.5 ps
  • Output residual pump power < -30dB (in reference to the output signal power)
  • Output return losses < -40 dB
  • Polarization dependent loss < 0.3 dB


  • Fiber optic delay lines
  • Long distance RF/microwave fiber optic communication links
  • Sensing and control systems
  • CATV systems
  • High-performance supertrunking links
  • Redundant ring architectures
  • FTTx networks