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Resonators with tailored optical path by cascaded-mode conversions

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We report on fully reconfigurable CROWs with MEMS-tunable waveguides. Resonatorto-resonator and resonator-to-waveguide coupling are fully tunable. Resonance of a resonator is also widely tunable to cover its full FSR. The static power consumption per tunab ...

IEEE2021

Self-induced thermo-optical effects in silicon and germanium dielectric nanoresonators

Giulia Tagliabue, Theodoros Tsoulos

Dielectric nanoresona tors uniquely support both magnetic and electric resonances across a wide wavelength range. They are thus being exploited in a growing number of groundbreaking applications. In particular, they have been recently suggested as promisin ...

2020

Resonant waveguide gratings (RWGs), also known as guided mode resonant (GMR) gratings or waveguide-mode resonant gratings, are dielectric structures where these resonant diffractive elements benefit from lateral leaky guided modes and can operate from UV t ...

EPFL2019

Coupled-mode theory for stationary and nonstationary resonant sound propagation

Romain Christophe Rémy Fleury, Theodoros Koutserimpas

In this paper, we present a complete analytical derivation of the equations used for stationary and nonstationary wave systems regarding resonant sound transmission and reflection described by the phenomenological coupled-mode theory. We calculate the prop ...

2019

Add-Drop Multiplexing Architecture for Nyquist OTDM Signals Based on a Single Mach-Zehnder Modulator

Camille Sophie Brès, Jianqi Hu, Svyatoslav Kharitonov, Simon Julien Fabbri

We propose and compare add-drop multiplexing schemes for Nyquist OTDM signals based on 1 x2 or 2 x2 Mach-Zehnder modulator. Bright and dark sinc pulse carver simultaneously provided by the modulator fulfil drop, notch and add functions. ...

IEEE2019

High index optical waveguide devices such as slab waveguides, strip waveguides and fibers play extremely important roles in a wide range of modern applications including telecommunications, sensing, lasing, interferometry, and resonant amplification. Yet, ...

2018

III-nitride waveguides featuring AlInN claddings and GaN/AlGaN quantum wells (QWs) offer promising perspectives for applications in many fields of short-wavelength photonics. Thanks to their nearly lattice-matched nature, these structures exhibit an excell ...

EPFL2018

The ability to control and manipulate light is a fundamental aspect that is at the very core of the development of integrated photonic circuits. It is desirable to achieve such control down to a scale that is comparable to or smaller than the wavelength of ...

EPFL2018

3D printed microwave cavity for atomic clock applications: proof of concept

Anja Skrivervik, Emile Jacques de Rijk

The authors present the realisation and characterisation of an additively manufactured (AM) microwave resonator cavity for double-resonance (DR) vapour-cell atomic clocks. The design of the compact microwave cavity is based on the loop-gap resonator approa ...

2018

Here, we investigate a scheme to realize free-space isolators and highly non-reciprocal mirrors with weak modulation imparted by an acoustic wave. We propose a strategy to dramatically break time-reversal symmetry by exploiting resonant interactions betwee ...

2018