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Performance Improvement of Gain in Distributed Raman Amplifier Using Forward and Backward Pumps

机译：使用前向和后向泵改善分布式拉曼放大器增益的性能

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Optical amplifiers have played a revolutionary role in fiber communication systems from early 1990s itself. An optical signal can be amplified within the optical domain without converting to electrical domain using optical amplifiers in an inexpensive way without electronic regenerators. The fiber itself acts as the gain medium for distributed Raman amplifier. The working principle of Raman fiber amplifier is called stimulated Raman scattering (SRS), which is a nonlinear effect and it requires an optical power higher than a threshold of at least 500 mW [1]. An input signal can be amplified while traveling through the fiber in the same direction or in opposite direction with a pump wavelength of appropriate power. By carefully adjusting the forward and backward pump power, the transmission performance can be improved. In this paper, the gain and SNR of the amplifier are studied for different pumping schemes and found that the transmission performance is improved by operating on low pump power ratio which does not require any changes in the existing system.
机译：从1990年代初期开始，光放大器就在光纤通信系统中发挥了革命性的作用。可以在没有电子再生器的情况下以便宜的方式使用光放大器在光域内放大光信号而无需转换为电域。光纤本身充当分布式拉曼放大器的增益介质。拉曼光纤放大器的工作原理称为受激拉曼散射（SRS），它是一种非线性效应，它需要的光功率高于至少500 mW的阈值[1]。当输入信号以适当功率的泵浦波长沿相同方向或相反方向通过光纤时，可以放大输入信号。通过仔细地调节前进和后退泵浦功率，可以改善传动性能。在本文中，针对不同的泵浦方案研究了放大器的增益和SNR，发现通过在低泵浦功率比下工作可以改善传输性能​​，而无需对现有系统进行任何更改。

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