High-Performance Distributed Brillouin Optical Fiber Sensing

Abstract This paper reviews the recent advances on high-performance distributed Brillouin optical fiber sensing, which include conventional sensing based backward stimulated scattering and two other novel mechanisms dynamic grating forward scattering, respectively. As for spatial resolution has been improved from meter to centimeter in time-domain scheme millimeter correlation-domain scheme, respectively; measurement time reduced minute millisecond even microsecond; range reached more than 100 km. can be used measure birefringence of a polarization-maintaining fiber, explored realize temperature, strain, salinity, static pressure, transverse pressure. More recently, gained considerable interest because its capacity detect mechanical features materials surrounding remarkable works using ingenious schemes have managed measurement, opens brand-new way achieve position-resolved substance identification.