Publication

Simple distributed temperature sensor based on Brillouin gain spectrum analysis

Related publications (46)

A CMOS 3D camera with millimetric depth resolution

Edoardo Charbon, Pierre-André Besse, Cristiano Niclass, Alexis Rochas

A 3D imager is presented capable of capturing the depth map of an arbitrary scene. Depth is measured by computing the time-of-flight of a ray of light as it leaves the source and is reflected by the objects in the scene. The round-trip time is converted to ...

2004

Distributed measurement of chromatic dispersion by four-wave mixing and Brillouin optical-time-domain analysis

Luc Thévenaz, Philippe Robert

A new nondestructive method for measuring the spatial distribution of chromatic dispersion along an optical fiber is presented. It is based on using Brillouin optical time-domain analysis to probe the power distribution of the four-wave mixing generated by ...

Optical Society of America2003

Reverse propagation of femtosecond pulses in optical fibers

Demetri Psaltis

We present a numerical technique for reversing femtosecond pulse propagation in an optical fiber, such that given any output pulse it is possible to obtain the input pulse shape by numerically undoing all dispersion and nonlinear effects. The technique is ...

2003

Coherent optical information systems

Demetri Psaltis

Coherent optical beams are used to communicate, store, and process information in a growing number of applications. The availability of coherent laser sources is of critical importance for the realization of such optical information systems. An incoherent ...

2002

Compact multisensor laser scanning head for processing and monitoring microspot welding

René Salathé, Thomas Sidler, Moustapha Hafez

In order to improve the reliability of micro-spot welding of metal parts in production such as e.g. in electron guns for TV picture tubes, real-time information about the evolution of the welding process should be available to allow on-line modification of ...

SPIE-Int. Soc. Opt. Eng2000

A compact, multi-sensor laser scanning head for processing and monitoring micro-spot welding

René Salathé, Thomas Sidler

2000

CW highly efficient 1.24 μm Raman laser based on low-loss phosphosilicate fiber

René Salathé, Hans Georg Limberger

We report the first demonstration of an extremely simple and efficient 1.24 μm phosphosilicate fiber-based Raman laser with Bragg gratings written directly in the fiber used. The laser pumped by Nd fiber laser exhibits a slope efficiency of 80% ...

IEEE1999

Novel measurement scheme for injection locking experiments with semiconductor lasers

Luc Thévenaz, Philippe Robert

A novel measurement scheme is presented for injection locking experiments with semiconductor lasers. In the method, the light generated by the master laser travels through an optical fiber before being injected into the cavity of the slave laser. Using the ...

IEEE, Piscataway, NJ, USA1998

La diffusion Brillouin dans les fibres optiques

Among all non-linear optical effects observed in single-mode optical fibres, stimulated Brillouin scattering (SBS) is of particular importance since it has numerous practical implications. SBS occurs when laser waves are scattered through the interaction o ...

EPFL1997

A novel surveillance system for installed fiber optics cables using stimulated Brillouin interaction

Luc Thévenaz, Philippe Robert, Alexandre Fellay

A novel surveillance system for installed fiber optic cables is presented. It is based on the analysis of the local stimulated Brillouin scattering interaction. The configuration of the instrument rely on the use of a single laser source and the required l ...

1997

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