Concept

Fiber-optic cable

Publications associées (531)

Four wave mixing effects in gain-equalized distributed fiber raman amplifiers

The degradation of the performance of distributed fiber Raman amplifiers (DFRAs) is shown to be dependent on the interaction between pump-pump four-wave mixing (FWM) and stimulated Raman scattering (SRS), by means of numerical simulations. We verify that F ...

IEEE2007

Fundamentals and challenges of optical multiple-input multiple-output multimode fiber links [Topics in Optical Communications]

Ali H. Sayed, Arvind Shah

In this article we discuss the application of MIMO processing to multimode fiber links. MIMO processing is shown to increase the information capacity of communication links linearly as the minimum number of transmitters/receivers increases. The fundamental ...

IEEE2007

Simple scheme for realizing fast light with low distortion in optical fibers

Luc Thévenaz, Sang Hoon Chin

In a previous paper (Song et al., 2005) we reported the first experimental demonstration of pulse advancement with gain in optical fibers using stimulated Brillouin scattering (SBS). We tested the two methods described above to achieve gain-assisted fast l ...

IEEE2007

Distributed sensing using polarization sensitive optical low-coherence reflectometry and fiber gratings

Dragan Coric

Optical low coherence reflectometry (OLCR) is non-destructive interferometric technique that allows measuring amplitude and phase of the light reflected from the device under test. OLCR is a powerful tool for the characterization of the various optical dev ...

EPFL2007

Real-Time Birefringence Measurement with Digital Holographic Microscopy

Christian Depeursinge, Yves Bellouard, Tristan Colomb, Jonas Kühn, Florian Charrière

Digital holographic microscopes using two orthogonal polarized reference waves provides real-time polariscopes. Birefringence induced by internal stress is imaged in optical fibers and in fused silica substrates, where lines are written with low-energy fem ...

OSA2007

Impairments in Gain-Equalized Distributed Fiber Raman Amplifiers due to Four-Wave Mixing and Parametric Amplification Processes

Marcelo Alfonso Soto Hernandez

In this work, by means of numerical simulations, we verify that four‐wave mixing (FWM) processes, including depletion and parametric gain, generate a redistribution of pump power in distributed fiber Raman amplifiers (DFRAs). As a consequence of pump‐pump ...

AIP2007

Optical imaging system with extended depth of focus

Theo Lasser, Rainer Leitgeb, Martin Villiger, Adrian Bachmann, Lukas Steinmann

The invention concerns an optical imaging apparatus comprising a light source, sample holding means, an interferometer, reference means, an objective which is adapted to have its sample side focal plane crossing a sample held in said sample holding mea ...

2007

Complete experimental characterization of stimulated Brillouin scattering in photonic crystal fiber

Luc Thévenaz, Stella Foaleng Mafang, Dario Alasia

We provide a complete experimental characterization of stimulated Brillouin scattering in a 160 m long solid-core photonic crystal fiber, including threshold and spectrum measurements as well as positionresolved mapping of the Brillouin frequency shift. In ...

Optical Society of America2007

All-Fiber Parametric Conversion From Near to Short Wave Infrared Band

Camille Sophie Brès

700nm parametric conversion in silica fiber from near-infrared to short-wave infrared band is reported for the first time. The conversion efficiency in excess of 40dB was measured between 1300nm signal and 2000nm idler band. ...

2007

Distributed fiber-optic temperature sensing for hydrologic systems

Luc Thévenaz, Wolf Hendrik Huwald, Marc Parlange, Nicolaas Cornelis van de Giesen

Instruments for distributed fiber-optic measurement of temperature are now available with temperature resolution of 0.01°C and spatial resolution of 1 m with temporal resolution of fractions of a minute along standard fiber-optic cables used for communicat ...

2006

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