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.
References in periodicals archive ?
Characteristic of Discrete Raman Amplifier at Different Pump Configurations," World Acad.
In this paper, we have analyzed the theory and simulated a DWDM network system using a distributed Raman amplifier pumped in two different directions.
The laboratory test was performed on a 100G/s channel over an ultra low loss optical fiber by using Huawei Marines self-developed enhanced Raman amplifier (ERPC) and remote optical pumping amplifier (ROPA).
To investigate the performance of SOA and discrete Raman amplifier a simulation model of a 10 Gbit/s 16 channel DWDM transmission system with none-return-to-zero encoding technique, intensity on-off keying modulation format, and 50 GHz channel spacing has been introduced.
Shigematsu "Highly nonlinear fiber-based lumped fiber Raman amplifier for CWDM transmission systems", J.
MRV's EM1600-OAR Raman amplifier family consists of three modules that offer 10dB, 12dB and 15dB of maximum optical gain over G652 fiber.
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.
com) specializes in the design, development and production of a comprehensive line of optical amplifiers, including the world only Self-Managed EDFA, the widely-deployed Dynamic (Variable-Gain) EDFA, the pioneering Gain-Switched Variable-Gain EDFA and the Class 1M laser product Raman Amplifier and various single-stage amplifiers.
It is possible to achieve gain over wide bandwidth with low NF by using multi-pump Raman amplifiers [4].
based OFS, Specialty Photonics Division have developed and started production of high-output, narrow-linewidth, full-band tunable lasers and integrable tunable laser assemblies (ITLAs), and have started volume production of their HPU 42000 series Raman amplifiers.
The module is for R&D and production testing of high power EDFA and Raman amplifiers, and pump lasers for optical amplification.
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.