Publications related to Silicon photonic MEMS variable optical attenuator

Related publications (31)

Lithium Tantalate Photonic Integrated Circuits (Student Paper)

Tobias Kippenberg, Johann Emmeram Riemensberger, Mikhail Churaev, Xinru Ji, Zihan Li, Chengli Wang

We demonstrate a wafer-scale lithium tantalate photonic platform with loss as low as 5.5 dB m(-1). Mach-Zehnder modulators with a 40 GHz electro-optical bandwidth and a 1.96 V center dot cm voltage-length product, along with microresonators supporting diss ...

Springer Nature2024

Microfluidic wet spinning of soft polydimethylsiloxane polymer optical fibers

Fabien Sorin

Polymer optical fibers (POFs) are an essential component of photonic textile sensors for the development of healthcare@home technologies. However, fabricating tailored POFs exhibiting the required properties for such applications remains challenging. Here, ...

2024

Medium Voltage DC-DC Converter for Power Collection Links : A Multistage Stacked Boost Architecture

Gina Kristin Steinke

Nowadays electrical energy generation is an important topic discussed in the society. Since technologies like wind or solar energy generation are most of the time placed far away from the city centres one point to focus on is the transmission of the energy ...

EPFL2017

Collective Flux Jumps observed in the Operation of the EDIPO Magnet

Pierluigi Bruzzone, Kamil Sedlák, Davide Uglietti, Boris Stepanov, Rainer Wesche, Stephen Alfred March

The tilted head race track coils of the EDIPO test facility are wound with cable-in-conduit conductors made by high current density Nb3Sn strands, Jc = 2400 A/mm2 at 12 T – 4.2 K. Since the commissioning of the coils, frequent voltage spikes were observed ...

IEEE Institute of Electrical and Electronics Engineers2014

Punching tests on edge slab-column connections with refined measurements

Aurelio Muttoni, Andri Setiawan

Due to the significant shear forces developing around columns and the potential brittle failure associated, the punching capacity of flat slabs is the main concern at ultimate limit state. An effective way to understand the behaviour of slab-column connect ...

2023

Operational experience in the use of 18 kA HTS current leads for Edipo

Pierluigi Bruzzone, Rainer Wesche, Stephen Alfred March

In spring 2013, the Edipo facility of CRPP was commissioned. The dipole is powered via two 18 kA HTS current leads, designed and manufactured at CRPP. As part of the Edipo commissioning framework, the operational parameters of the leads were implemented in ...

Iop Publishing Ltd2014

Fabrication and characterization of NbTi microwave superconducting resonators

Jürgen Brugger, Giovanni Boero, Nergiz Sahin Solmaz, Reza Farsi, Hernán Furci, Roberto Russo, André Chatel

Superconducting resonators are widely used in fields spanning from quantum computing to electron spin resonance (ESR) spectroscopy. With the goal of realizing superconducting resonators, a broad variety and combination of superconducting materials, substra ...

ELSEVIER2023

Use of high frequency electrorotation to identify cytoplasmic changes in cells non-disruptively

Kevin Theodric Uning

In this paper we demonstrate how the use of frequencies ranging from 50 kHz to 5 GHz in the analysis of cells by electrorotation can open the path to the identification of differences not detectable by conventional set-ups. Earlier works usually reported e ...

2023

A Review of Field-to-Transmission Line Coupling Models With Special Emphasis to Lightning-Induced Voltages on Overhead Lines

Farhad Rachidi-Haeri

We discuss the transmission line (TL) theory and its application to the problem of lightning electromagnetic field coupling to TLs. We start with the derivation of the general field-to-TL coupling equations for the case of a single-wire line above a perfec ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Modeling of Inductive Contactless Energy Transfer Systems

Pascal Meyer

In the domain of electronic devices and especially desktop peripherals, there is an industrial trend which consists in removing the cables that pollute our domestic and professional environments. In this sense, wireless communication protocols are already ...

EPFL2012

New Network Architectures, Protocols, And Algorithms For Time-Sensitive Applications

Jean-Yves Le Boudec

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

Assessment of the Thermal-Hydraulic Performance of the European DEMO NbTi Bus Bars

Rainer Wesche, Kamil Sedlák, Roberto Guarino

We present a numerical assessment of the thermal-hydraulic performance of the NbTi bus bars designed for the European DEMO. We consider the CS, TF and PF bus bars, as well as two alternative TF options for high-current operations. The main sources of stati ...

IEEE Institute of Electrical and Electronics Engineers2022

Ultra-Small Bent Meta-Waveguide Filters

Romain Christophe Rémy Fleury, Maliheh Khatibi Moghaddam

This paper demonstrates the capability of locally resonant metamaterials (LRMs) for creating compact metallic waveguide E- and H-bends, which are simultaneously working as bandpass filters. For creating these bent meta-filters, we use composite pin-pipe wa ...

IEEE2022

Auto-tuning ensemble models for estimating shear resistance of headed studs in concrete

Xianlin Wang

The shear resistance of headed studs is of paramount importance for the design of steel-concrete composite structures and an accurate predictive model is highly needed. Ensemble learning is expected to be a powerful solution while it relies on laborious se ...

2022

Experimental and modeling-based analysis of reaction pathways on catalysts for natural gas engines under periodic lean/rich oscillations

Oliver Kröcher, Davide Ferri, Moyu Wang

Methane (CH4) has the prospective of becoming one of the major energy carriers for heavy-duty mobility, but its catalytic abatement remains a challenge. CH4 abatement reaction pathways were analyzed using targeted periodic lean/rich oscillations, which res ...

ELSEVIER SCIENCE SA2022

Design Optimization of a MW-level Medium Frequency Transformer

Drazen Dujic, Nikolina Djekanovic

Nowadays, with the increased interest in applications dealing with high-power medium-voltage conversion, there is a strong need to master the design of medium-frequency transformers, which are one of the key components of modern DC transformers. The paper ...

2022

A Prony-based approach for accelerating the lightning electromagnetic fields computation above a perfectly conducting ground

Farhad Rachidi-Haeri, Marcos Rubinstein

Lightning strikes can seriously affect the reliability and availability of electrical infrastructures. The computation of lightning-electromagnetic fields represents one of the most crucial steps in the evaluation of the induced effects; thus, having at di ...

Elsevier2022

On the reconstruction of the attenuation function of a return-stroke current from the Fourier Transform of finite-duration measurements

Farhad Rachidi-Haeri, Marcos Rubinstein

A correct representation of the lightning current is crucial when the electromagnetic field radiated to a point of interest has to be computed. Based on the engineering models of Transmission Line type, such representation involves the knowledge of the ret ...

2022

FBG Tactile Sensor for Surface Thickness and Shape Measurement

Suneetha Sebastian

In recent years, numerous measurement techniques have been employed to characterize surface textures in the micrometer and nanometer range. Although these techniques have enabled significant advances in surface metrology, larger surface details are not eas ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

Optical properties and photochemical production of hydroxyl radical and singlet oxygen after ozonation of dissolved organic matter

Urs von Gunten, Frank Jonathan Leresche

This study focuses on the effects of ozonation on the optical and photochemical properties of dissolved organic matter (DOM). Upon ozonation, a decrease in light absorption properties of DOM was observed concomitantly with a large increase in singlet oxyge ...

ROYAL SOC CHEMISTRY2021