Fiber Optic Sensing Technology brullouin
Brillouin Distributed Optical Fibre Sensing (Brillouin D-FOS) is a powerful lightwave technology for measuring and mapping temperatures, deformations and pressures in thousands of industrial, civil and environmental applications. Brillouin scattering in optical fiber describes the interaction of an electro-magnetic field (photon) with a characteristic density variation of the fiber. When the electric field amplitude of an optical beam (so-called pump wave), and another wave is introduced at the downshifted Brillouin. This chapter provides an overview of different Brillouin sensing techniques and mainly focuses on the most widely used one, the Brillouin optical time domain analysis (BOTDA). Techniques have been developed to monitor temperature, strain, and vibration over distances of more than 50.
Read More
