ABSTRACT
This chapter presents the basic concepts of Stimulated process of Brillouin scattering (SBS), such as frequency shift, Brillouin gain spectrum, threshold, temperature and strain dependence, etc. It covers the use of SBS as a lasing tool, from multi Stokes comb generation to narrow linewidth lasers, distributed feedback lasers or pulsed laser sources for telecommunications applications. The chapter outlines with the improvements in research and technology, developments in the area of SBS, not only as a way of mitigation, have become increasingly important. It presents temperature and strain sensing using SBS, and the basic concepts behind this effect as well as progress in distributed sensing with SBS. SBS in the scientific community rapidly due to its low threshold in long lengths of optical fiber and its counterpropagating nature which severely limited optical transmission systems, especially with narrow bandwidth sources.
