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Niels Quack

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Related publications (80)

Silicon Photonic MEMS: Exploiting Mechanics at the Nanoscale to Enhance Photonic Integrated Circuits

Niels Quack, Banafsheh Abasahl, Shiv Ashish Kumar, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

With the maturing and the increasing complexity of Silicon Photonics technology, novel avenues are pursued to reduce power consumption and to provide enhanced functionality: exploiting mechanical movement in advanced Silicon Photonic Integrated Circuits pr ...

IEEE2019

Silicon Photonic MEMS Phase-Shifter

Niels Quack, Marcell Kristof Kiss, Teodoro Graziosi, Hamed Sattari

We present a design for an analog phase shifter based on Silicon Photonic MEMS technology. The operation principle is based on a two-step parallel plate electrostatic actuation mechanism to bring a vertically movable suspended tapered waveguide in a first ...

2019

Characterization of crystallographically etched single crystal diamond diffraction gratings

Niels Quack, Olivier Martin, Toralf Scharf, Marcell Kristof Kiss

We report on the fabrication and experimental characterization of single crystal diamond diffraction gratings fabricated with crystallographic dry etching. High aspect ratio atomic force microscopy reveals a characteristic V-groove profile exhibiting smoot ...

IEEE2018

Digital Silicon Photonic MEMS Phase-Shifter

Niels Quack

We report on a 4-bit digital silicon photonic MEMS phase-shifter with sub-microsecond switching time and low power consumption (< 10 uW). The device consists of 4 digitally switched phase-shifting units, which in total enable phase shift from pi/8 to 15pi/ ...

IEEE2018

Large-Scale Polarization-Insensitive Silicon Photonic MEMS Switches

Niels Quack

IEEE Institute of Electrical and Electronics Engineers2018

Precision micro-mechanical components in single crystal diamond by deep reactive ion etching

Niels Quack, Teodoro Graziosi, Hamed Sattari

Nature Publishing Group2018

Trapezoidal Diffraction Grating Beam Splitters in Single Crystal Diamond

Niels Quack, Teodoro Graziosi

2018

Size control of self-organized gold nanoparticles on nanopatterned single crystal diamond

Christian Santschi, Niels Quack, Olivier Martin, Marcell Kristof Kiss, Sichen Mi

Surface patterning using plasmonic nanoparticles has attracted increasing interest owing to their wide use in sensing, imaging and medical applications. In this report we demonstrate bottom-up engineering of size distribution of gold nanoparticles (AuNPs) ...

IEEE2018

Single crystal diamond micro-disk resonators by focused ion beam milling

Niels Quack, Marcell Kristof Kiss, Teodoro Graziosi, Sichen Mi

We report on single crystal diamond micro-disk resonators fabricated in bulk chemical vapor deposition diamond plates (3 mm x 3 mm x 0.15 mm) using a combination of deep reactive ion etching and Focused Ion Beam (FIB) milling. The resulting structures are ...

2018

Silicon photonic MEMS variable optical attenuator

Niels Quack, Teodoro Graziosi, Hamed Sattari

We present a design for an on-chip MEMS-actuated Variable Optical Attenuator (VOA) based on Silicon Photonic MEMS technology. The VOA consists of 30 individual mechanically movable MEMS cantilevers, suspended over an integrated, 1 mu m wide bus waveguide, ...

SPIE-INT SOC OPTICAL ENGINEERING2018

Enhancement of optical quality factor by thermal annealing of single crystal diamond micro-resonators

Niels Quack, Marcell Kristof Kiss, Teodoro Graziosi, Sichen Mi

We report on the increase in optical quality factor of a suspended single crystal diamond micro-disk resonator by thermal annealing. The resonators are fabricated by Deep Reactive Ion Etching (DRIE) to obtain circular pillars in bulk single crystal diamond ...

IEEE2018

Freestanding optical micro-disk resonators in single-crystal diamond by reactive ion etching and multidirectional focused ion-beam milling

Niels Quack, Teodoro Graziosi, Sichen Mi

2018

Electronic-Photonic Integrated Circuit for 3D Microimaging

Niels Quack

An integrated electronic-photonic phase-locked loop (PLL) modulates the frequency of a tunable laser for use in frequency-modulated continuous-wave (FMCW) lidar 3D imaging. The proposed lidar can perform 180k range measurements per second. The rms depth pr ...

Institute of Electrical and Electronics Engineers2017

Large-scale broadband digital silicon photonic switches with vertical adiabatic couplers

Niels Quack

Large-scale photonic switches are essential devices for energy-and cost-efficient optical communication networks in cloud and data-intensive computing. Silicon photonics is an attractive platform for high-density photonic integrated circuits with low manuf ...

Optical Soc Amer2016

Die Level Release of Silicon Photonic MEMS

Niels Quack, Jonas Jacobs, Teodoro Graziosi

We demonstrate a die level release process for silicon photonic MEMS structures, that is compatible with dies from a standard silicon photonics foundry process which are only several square millimeters in size. ...

IEEE2016

Large-Scale Silicon Photonic Switches

Niels Quack

Large-scale (50x50 and 64x64) integrated photonic switches have been realized by combining silicon photonics with efficient micro-electro-mechanical-system (MEMS) switching mechanisms. Low on-chip loss (0.058dB/port) and sub-microsecond switching time have ...

Ieee2016

Scalable Row/Column Addressing of Silicon Photonic MEMS Switches

Niels Quack

In this letter, we demonstrate a scalable addressing scheme for silicon photonic MEMS switches. For a crossbar architecture switch fabric of dimension N x N, the row/column addressing scales with 2 . N electrodes, much reduced from the N-2 electrodes in in ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Highly Scalable Digital Silicon Photonic MEMS Switches

Niels Quack

Optical circuit switches with fast switching times can provide rapidly reconfigurable bandwidth in data center networks. Silicon photonic switches are attractive candidates with their fast response times and CMOS process compatibility. In this paper, we re ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Submicrometer Hall devices fabricated by focused electron-beam-induced deposition

Radivoje Popovic, Giovanni Boero, Patrik Willi Hoffmann, Pavel Kejik, Niels Quack, Tristan Bret, Jürgen Brugger, Schahrazede-Lila Mouaziz

Hall devices having an active area of about (500 nm)(2) are fabricated by focused electron-beam-induced deposition. The deposited material consists of cobalt nanoparticles in a carbonaceous matrix. The realized devices have, at room temperature, a current ...

American Institute of Physics2005

Submicrometer Hall devices fabricated by focused electron-beam-induced deposition

Radivoje Popovic, Giovanni Boero, Patrik Willi Hoffmann, Pavel Kejik, Niels Quack, Tristan Bret, Jürgen Brugger, Schahrazede-Lila Mouaziz

Hall devices having an active area of about (500 nm)2 are fabricated by focused electron-beam-induced deposition. The deposited material consists of cobalt nanoparticles in a carbonaceous matrix. The realized devices have, at room temperature, a current se ...

2005

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