Concept

Passive optical network

Publications associées (170)

Photonic delay line for broadband optical signals, based on dynamic grating reflectors in fibers

Luc Thévenaz, Sang Hoon Chin, Nikolay Primerov

We experimentally demonstrate that a novel type of photonic delay line based on movable dynamic grating reflectors generated in polarization maintaining fibers can provide continuously tunable signal delaying for high capacity optical data streams and wide ...

IEEE2010

Versatile optical access to the tunnel gap in a low-temperature scanning tunneling microscope

Klaus Kern, Alexander Kabakchiev

We developed a setup that provides three independent optical access paths to the tunnel junction of an ultrahigh vacuum low temperature (4.2 K) scanning tunneling microscope (STM). Each path can be individually chosen to couple light in or out, or to image ...

2010

Mode Control of 1.3 proportional to m Wavelength Coupled VCSEL Arrays by Cavity Structuring

Elyahou Kapon, Benjamin Dwir, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman, Elodie Lamothe, Lukas Mutter

Mode control in wafer-fused 1.3 mu m wavelength coupled-VCSEL arrays is achieved by cavity structuring and investigated by spectrally resolved near- and far-field measurements. Improved mode discrimination is attained by combining index- and gain-patternin ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Long-range Brillouin optical time-domain analysis sensor employing pulse coding techniques

Luc Thévenaz, Marcelo Alfonso Soto Hernandez

In this paper we describe and implement a long-range Brillouin optical time-domain analysis (BOTDA) sensor, for both temperature and strain measurements, using optical pulse coding techniques. A theoretical analysis of Simplex coding applied to BOTDA syste ...

2010

Context-adaptive information flow allocation and media delivery in online social networks

Pascal Frossard

This paper investigates context-driven flow allocation and media delivery in online social networks. We exploit information on contacts and content preferences found in social networking applications to provide efficient network services and operation at t ...

2010

Experimental investigation of diabatic flow in microchannels using infra-red thermography

John Richard Thome, Navid Borhani, Sylwia Szczukiewicz

This study focuses on the application of infra-red thermography to visualise the heat transfer dynamics of diabatic flows in multi-microchannels etched into silicon wafers. The 100 parallel channels were 50 micron wide, 100 microns deep, and with a pitch o ...

2010

Infrared Conductivity of Elemental Bismuth under Pressure: Evidence for an Avoided Lifshitz-Type Semimetal-Semiconductor Transition

László Forró, Dirk Van der Marel

The application of pressure to elemental bismuth reduces its conduction-valence band overlap, and results in a semimetal-semiconductor (SMSC) transition around 25 kbar. This transition is nominally of the topological "Lifshitz'' Fermi surface variety, but ...

American Physical Society2010

Strain Measurement Validation Of Embedded Fiber Bragg Gratings

Stefano Trono

This study investigates the influence of strain state distribution on the accuracy of embedded optical fiber Bragg gratings (FBGs) used as strain sensors. An optical fiber embedded parallel to adjacent structural fibers in a graphite epoxy quasi-isotropic ...

2010

1.38-μm mode-locked Raman fiber laser pumped by semiconductor disk laser

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu

A mode-locked Raman fiber laser pumped by 1.3 mu m semiconductor disk laser is demonstrated. Direct Watt-level core-pumping of the single-mode fiber Raman lasers and amplifiers with low-noise disk lasers is demonstrated to represent a highly practical solu ...

Optical Society of America2010

Software Tools and Methods for Research and Education in Optical Networks

Sébastien Rumley, Christian Gaumier

Recent advances in photonic communication networks require planning, modelling and simulation tools of ever increasing scope and complexity. Based on valid and credible models, simulators are used heavily to investigate and assess new solutions before impl ...

Springer2009

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