B-OTDR Brillouin reflectometer BOTDR (Brillouin optical time domain reflectometer). Another kind of reflectometers is based on the Brillouin scattering. In the typical reflectometers the Rayleigh scattering is employed for analysis. The BOTDR reflectometer utilizes the phenomenon of the inelastic Brillouin scattering, related to generation of acoustic wave at frequency fB. The signal resulting from the […]