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Raman amplifier

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Raman amplifier

Pronounced "ruh-mahn," it is a device that boosts the signal in an optical fiber by transferring energy from a powerful pump beam to a weaker signal beam. It relies on the interaction between light and atoms in the fiber. Unlike erbium-doped fiber amplifiers (EDFAs), which boost wavelengths in the 1530-1610 nm range, a Raman amplifier can increase the signal strength of any wavelength by pumping at 13THz more than the desired frequency.

Normally, Raman amplification is distributed along lengths of signal-transmitting fiber. A Raman pump laser is typically stationed at the end of a fiber run and pumps backward several kilometers to amplify signals through that region. See EDFA.
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References in periodicals archive
Typically, discrete lumped Raman amplifiers use separate highly nonlinear fibres as the gain medium, rather than the transmission fibre, to ensure adequate Raman scattering.
Learn from experience: As data demand ramps ever higher, researchers are looking to innovative amplifier designs to help transport a broader light spectrum through optical fibres, finds Andy Extance
This new design of optimum gain flattening performance of Raman amplifier will be useful for telecommunication networks.
Performance Analysis of Flat Gain Wideband Raman Amplifier for S+C and C+L Band DWDM System
Moreover, we propose IWDM to increase the number of FBG sensors and we employ a Raman amplifier to increase the sensing signal transmission distance and to improve the signal quality.
Intensity and Wavelength Division Multiplexing FBG Sensor System Using a Raman Amplifier and Extreme Learning Machine
"Broadband high-gain dispersion compensating raman amplifier," IEEE J.
Comparison of discrete L-band Raman fiber amplifier in two different configurations
A silica fiber Raman amplifier pumped at a wavelength of 1451.2 nm with pump power 1000 (mW) is designed.
Chromatic Dispersion Compensation Effect Performance Enhancements Using FBG and EDFA-Wavelength Division Multiplexing Optical Transmission System
In this paper, we have analyzed the theory and simulated a DWDM network system using a distributed Raman amplifier pumped in two different directions.
Effects of ASE noise and dispersion chromatic on performance of DWDM networks using distributed Raman amplifiers
For a discrete Raman amplifier this parameter is not so relevant.
Comparison of semiconductor optical amplifier and discrete Raman amplifier performance in DWDM systems/Puslaidininkinio optinio stiprintuvo ir diskretinio Raman stiprintuvo, naudojamu DWDM sistemose, tyrimas
Jiang "Robust, compact, and flexible heural model for a fiber Raman Amplifier", J.
Optical fiber amplifiers-review
The most promising alternative to EDFAs are the two types of optical amplifiers that utilize fiber non-linearity for all optical signal amplification purposes: Raman amplifiers (RA) and fiber optical parametric amplifiers (FOPA).
Performance Comparison of Single-Pump FOPA and LRA in a 16-channel DWDM Transmission System
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