Concept

Fiber-optic cable

Publications associées (531)

Innovative corrugated transmission line for Terahertz wave-guiding

Stefano Alberti, Jean-Philippe Ansermet, Jean-Philippe Hogge, Emile Jacques de Rijk, Alessandro Macor

We demonstrate the construction of modular corrugated waveguides using stacked rings to propagate Terahertz frequencies. This waveguide allows propagation of the same fundamental mode as an optical-fiber, namely the HE 11 mode. This simple concept opens th ...

IEEE2011

BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification

In this paper we propose the use of optimized bi-directional distributed Raman amplification to enhance the operating range of Brillouin optical time-domain analysis (BOTDA) sensors. In particular by combining high-power fiber-Raman lasers and polarization ...

2011

Active tensegrity structures with sliding cables - static and dynamic behaviour

Ian Smith, Landolf-Giosef-Anastasios Rhode-Barbarigos, Nizar Bel Hadj Ali

Tensegrities are spatial, reticulated and lightweight structures that are increasingly investigated as structural solutions for active and deployable structures. Tensegrity systems are composed only of axially loaded elements providing opportunities for ac ...

2011

Slow light fiber systems in microwave photonics

Luc Thévenaz, Sang Hoon Chin

Slow light systems are particularly attractive for analog signal processing, since their inherent limitation to a delay-bandwidth product of 1 is less critical for analog systems such as those used in microwave photonics. We present here the implementation ...

SPIE2011

Advanced Fiber Optics: Concepts and Technology

Luc Thévenaz

Few technologies have had as much impact on society as fiber optics. These tiny hair-sized glass wires have deeply transformed the way we access information, our modes of communication and even the behavior of consumers. Today, optical fibers are omniprese ...

EPFL Press, distributed by CRC Press2011

Fabrication of mode field converter in H2-loaded SMF-28e using CW-Ar+ laser

Hans Georg Limberger, Georgios Violakis, Nandita Aggarwal

We report on mode field diameter changes of -31% due to UV-induced core refractive index changes of

Optical Soc America, 2010 Massachusetts Ave Nw, Washington, Dc 20036 Usa2011

Hybrid Small Animal Imaging System Combining Magnetic Resonance Imaging with Fluorescence Tomography Using Single Photon Avalanche Diode Detectors

Edoardo Charbon, Lucio Carrara, Markus Rudin, Christof Baltes

The high sensitivity of fluorescence imaging enables the detection of molecular processes in living organisms. However, diffuse light propagation in tissue prevents accurate recovery of tomographic information on fluorophore distribution for structures emb ...

Institute of Electrical and Electronics Engineers2011

Polarization pulling based on stimulated Brillouin scattering in a dual-pump configuration

Luc Thévenaz, Sang Hoon Chin, Nikolay Primerov

Stimulated Brillouin scattering (SBS) amplification of probe signals is highly polarization dependent. Maximum and minimum gain values are associated with a pair of orthogonal states of polarization (SOP) at the fiber output. Since the maximum gain is much ...

SPIE2011

Movable dynamic grating-based optical delay line in polarization maintaining fibers

Luc Thévenaz, Sang Hoon Chin, Nikolay Primerov

A new type of all optical delay line is realized in fibers. A local dynamic grating reflector can be generated everywhere in the fiber, demonstrating >1 us delay for 650 ps pulses. ...

Optical Society of America2011

Distributed Brillouin sensing with sub-meter spatial resolution: modeling and processing

Luc Thévenaz, Stella Foaleng Mafang

A general analytic solution for Brillouin distributed sensing in optical fibers with sub-meter spatial resolution is obtained by solving the acoustical-optical coupled wave equations by a perturbation method. The Brillouin interaction of a triad of square ...

Optical Society of America2011

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