The quest for energy is pushing fibre based monitoring into new frontiers. Similarly, structural health monitoring is also demanding advanced monitoring solutions. The combination of Brillouin optical time domain analyzers with specifically designed sensing cables and proper analysis tools is shown to be a perfect match for these challenging applications.

Our goal is the rapid and accurate measurement of upper-ocean vertical sound velocity (and hence temperature) profiles in the ocean. The objective is to obtain range resolved (»1 m) measurements of temperature and sound velocity over a range of »100 m at an accuracy of 0.1°C and 0.2 m/s, respectively. To this end we are developing an innovative Brillouin LIDAR concept. Present results provide c...

2014 On the basis of the Landau and Lifshitz criteria, the allowed symmetries of soft-modes in the cubic crystals having space-groups Oih (i = 1, 2, ...,10) are presented explicitly. All single valued representations for high-symmetry points in the three different Brillouin zones of the cubic system (P, F, I) have been investigated. Our results are compared with those of other authors. J. Physi...

Coherent Rayleigh-Brillouin scattering (CRBS) in krypton at room temperature and moderate pressure has been studied experimentally. The experimental data is in good agreement with the theoretical lineshape developed by the authors. In this paper, we describe the details of the experiment. We also discuss the application of coherent Rayleigh-Brillouin scattering in gas diagnostics.

Advanced optical pulse coding methods to enhance the performance of distributed optical fiber sensors are reviewed. In particular, the latest implementations dedicated to highperformance long-range Raman and Brillouin based distributed sensing are described. OCIS codes: (060.2370) Fiber optics sensors; (290.5830) Scattering, Brillouin; (290.5860) Scattering, Raman.

We demonstrate experimentally that a wide control of the group velocity of light can be achieved in conventional optical fibers by use of the stimulated Brillouin scattering effect. Zero, negative and large positive group indices can be readily achieved with a simple experiment.  2005 Optical Society of America OCIS codes: (290.5900) Scattering, stimulated Brillouin; (060.4370) Nonlinear optic...

A dominant, broad central mode in the Brillouin spectrum of silicon was first reported by Sandercock in 1978. This feature was later ascribed to a two-phonon difference scattering process. However, the issue of quasielastic scattering in silicon has remained a major outstanding problem in Brillouin scattering, because similar central modes in other materials have commonly displayed two componen...

Delaying and advancement of optical pulses using stimulated Brillouin scattering in As2Se3 fiber is demonstrated. Pulses can be delayed by 37 ns in a 5-m-long fiber with a pump power as low as 60 mW. 2006 Optical Society of America OCIS codes: (999.9999) Slow light; (290.5900) Stimulated Brillouin scattering; (190.4370) Nonlinear optics, fibers; (190.2640) Frequency shifting

Vector formalism for stimulated Brillouin scattering amplification in birefringent fibers is used to model the fiber as an equivalent, pseudo-linear, polarization-dependent gain medium. Implications on slow and fast light setups are discussed. ©2009 Optical Society of America OCIS codes: (290.5900) Scattering, stimulated Brillouin; (120.5410) Polarimetry; (060.2300) Fiber measurements.

We propose a novel method to realize self-induced fast light and signal advancement with no distinct pump source in optical fibers, based on stimulated Brillouin scattering. This scheme can highly simplify real application systems. ©2007 Optical Society of America OCIS codes: (060.4370) Nonlinear optics, fibers; (290.5900) Scattering, stimulated Brillouin; (350.5500) Propagation