Research characteristics of the mandelstam — Brillouin scattering in specialized single-mode optical fibers

The work is devoted to the experimental researches of the Mandelstam - Brillouin backscatter spectrum in the specialized single-mode optical fibers such as the erbium-doped optical fiber and the polarization maintaining optical fiber - "Panda". Analysis of the experimental results shown considerable differences in dependences of the erbium-doped optical fiber and "Panda" optical fiber from the same dependences of other fiber types (G.652, G.653, G.655, G.657). Reflectograms of Mandelstam - Brillouin backscatter spectrum, graphic dependences of strain and loss on the basis of research tests are analyzed.