MAP Light Sources and EDFAs

The MAP system is used in a large variety of applications. The variety of available MAP light sources is just as large.

• Broadband light source – mBBS
  with a high power density in the C band and high spectral stability
• Tunable DBR laser – mTGL
  The tunable distributed Bragg reflector (DBR) plug-in module is a tunable laser for the C band with 50 GHz of channel spacing.
• Erbium-doped fiber amplifier – mEDFA
  EDFAs are low noise and feature high optical power output and high amplification

MAP Broadband Light Source mBBS

The mBBS broadband light sources utilize the advantage of erbium technology: amplified spontaneous emission (ASE), which provides a smoothed power density in the C band. The spectral stability of the source is very high.

MAP BBS Features

• Output power with smoothed spectrum
• High output power density
• High spectral stability

MAP Tunable DBR Laser mTLG

The mTLG modules can be set to all DWDM wavelengths in the C band with 50 GHz of channel spacing. The wavelength and output power are adjusted using the MAP platform controller module – either locally or remotely with the help of a PC interface. The internal wavelength locker and power control circuit ensure wavelength stability and output power stability.

MAP TLG Features

• Configuration with one, two, or four channels
• Tunable in the C band
• Wavelangth tunability: up to 42 nm
• Channel spacing: 50 GHz

MAP Erbium-doped Fiber Amplifiers (EDFAs)

Erbium-doped fiber amplifiers are optical amplifiers that strengthen an optical input signal without having to electro-optically convert it first. This amplification is based on the stimulated emission of the signal to be enhanced. The modulation of the signal is irrelevant; it does not change. The EDFAs are thus referred to as “transparent.”

Optical amplifiers are used in network technology; for example, they serve as signal amplifiers when bridging large distances, such as in transatlantic fiber optic connections.

In EDFAs, sections of the fiber are doped with erbium and then optically pumped using a semiconductor laser. The mEDFAs manufactured by Viavi exhibit an output power between 12 dBm and 21 dBm. They feature a low noise of just 3.5 dB and an amplification profile with a flatness of better than 2.0 dB.

mEDFA Features

• Versions available for the C band and L band
• Pre-amp, booster, or inline amplifiers
• High output power and amplification
• Low noise
• Monitoring and alarm functions