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Raman amplifier

   Also found in: Wikipedia 0.02 sec.

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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Fiber Raman amplifiers are becoming increasingly important in optical fiber communication systems since they provide both lower noise performance and a wider wavelength coverage than conventional optical amplifiers.
NIST researchers measure wavelength-dependent gain of raman fiber ... by Journal of Research of the National Institute of Standards and Technology
Yossi Boker, RED-C Co-Founder, President and CEO, comments: "We are pleased to report the successful completion of ETSI and NEBS compliance qualification for the Network Interfaced Raman amplifier product line.
RED-C Completes ETSI and NEBS Compliancy Tests for its Network ... by Business Wire
RED-C's Sentior product line constitutes the entire range of optical amplification modules, including the market-leading Self-Managed EDFA, the widely deployed Variable-Gain EDFA, the patent protected Gain Switched Variable Gain EDFA, the innovative class 1M Raman Amplifier and various cost-effective fixed-gain EDFAs.
RED-C and Capella to Demonstrate Their Jointly Developed Integrated ... by Business Wire
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