Published Online: Jul 10, 2015
Page range: 107 - 110
Received: Jul 11, 2014
Accepted: Jun 18, 2015
DOI: https://doi.org/10.1515/msr-2015-0016
Keywords
© Georgii Felinskyi et al.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
The problem of small bit error rate is actual in fiber Raman amplifiers. Our experimental data on the amplified spontaneous emission (ASE) with backward pumping as a base of optical noise evaluation are presented in this paper. Raman gain spectrum for useful Stokes low-powered signal is calculated and compared with obtained spectrum of non-coherent ASE noise. It is shown that output optical signal has better gain than the amplified spontaneous emission that leads to appreciable growth of output optical signal-to-noise ratio.