Concept

Waveguide

Publications associées (237)

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Coupling length of silicon-on-insulator directional couplers probed by Fourier-space imaging

Romuald Houdré, Nicolas Le Thomas, Jana Jágerská

We use a Fourier-space imaging technique relying on outcoupling grating probes to study the coupled mode interaction and dispersion properties of guided modes in silicon-on-insulator codirectional couplers. Our approach allows us to measure the mode splitt ...

American Institute of Physics2008

Er-Yb waveguide amplifiers in novel silicate glasses

Jana Jágerská

A set of novel silicate glasses containing ZnO and co-doped with Er3+ and Yb3+ was designed as substrates for optical waveguide amplifiers. Characterized by exceptionally low up-conversion, minimum Er concentration quenching and high mechanical as well as ...

Institute of Electrical and Electronics Engineers2008

High Power SMA Connectors

Michael Mattes, Francisco Edén Sorolla Rosario

On board of satellites traditionally Travelling Wave Tube Amplifiers (TWTAs) together with standard waveguide technology were used for transmitters in telecommunication payload systems. With the advent of Solid State Power Amplifiers (SSPAs) printed circui ...

2008

Internal spin-wave confinement in magnetic nanowires due to zig-zag shaped magnetization

Dirk Grundler

We perform broadband spin-wave spectroscopy on thin submicrometer-wide Ni80Fe20 magnetic wires. Intentionally, we apply the in-plane magnetic field under an angle that is a few degrees off with respect to the in-plane hard-axis direction. In an intermediat ...

2008

Surface plasmon propagation on thin metal films

Sergei Sidorenko

Surface plasmon-polaritons (SPPs) – electromagnetic waves propagating on the boundary between a metal and a dielectric and tightly bound to the interface – have been known for years. Recent progresses in microfabrication methods, near-field characterizatio ...

EPFL2008

Dispersion properties of silicon nanophotonic waveguides investigated with Fourier optics

Romuald Houdré, Nicolas Le Thomas, Jana Jágerská

We experimentally investigate the dispersion relation of silicon-on-insulator waveguides in the 1.5 mu m wavelength range by using a technique based on far-field Fourier-space imaging. The phase information of the propagating modes is transferred into the ...

Optical Society of America2007

Simulations of hybrid long-range plasmon modes with application to 90 degrees bends

Olivier Martin, Claudio Dellagiacoma

We perform rigorous simulations of hybrid long-range modes guided by a central metal core and a two-dimensional dielectric slab. We show that these modes are subject to fewer limitations than conventional long-range plasmon modes in terms of field confinem ...

2007

Terahertz photonic crystal quantum cascade lasers

Romuald Houdré, Hua Zhang, Jérôme Faist

We combine photonic crystal and quantum cascade band engineering to create an in-plane laser at terahertz frequency. We demonstrate that such photonic crystal lasers strongly improve the performances of terahertz quantum cascade material in terms of thresh ...

Optical Society of America2007

Guided acoustic wave Brillouin scattering in photonic crystal fibers

We experimentally investigate guided acoustic wave Brillouin scattering in several photonic crystal fibers by use of the so-called fiber loop mirror technique and show a completely different dynamics with respect to standard all-silica fibers. In addition ...

Optical Society of America2007

Near-field characterization of propagating optical modes in photonic crystal waveguides

Hans Peter Herzig

We analyze the propagating optical modes in a Silicon membrane photonic crystal waveguide, based on subwavelength-resolution amplitude and phase measurements of the optical fields using a heterodyne near-field scanning optical microscope (H-NSOM). Fourier ...

2006