Publication
Efficient, compact and low loss thermo-optic phase shifter in silicon
Publications associées (46)
Gigahertz free-space electro-optic modulators based on Mie resonances
Ileana-Cristina Benea-Chelmus, Sydney Rebecca Mason
Electro-optic modulators are essential for sensing, metrology and telecommunications. Most target fiber applications. Instead, metasurface-based architectures that modulate free-space light at gigahertz (GHz) speeds can boost flat optics technology by micr ...
NATURE PORTFOLIO2022Energy-Efficient Design Techniques for High-Speed Wireline Serial Links
The exponential growth in computing power and multimedia services has caused a tremendous increase in data traffic in recent years. This increase in data traffic brings a strong demand for data bandwidth of electrical input/output (I/O) links and pushes th ...
EPFL2021High speed, complex wavefront shaping using the digital micro-mirror device
Digital micro-mirror devices (DMDs) have been deployed in many optical applications. As compared to spatial light modulators (SLMs), they are characterized by their much faster refresh rates (full-frame refresh rates up to 32 kHz for binary patterns) compa ...
NATURE PORTFOLIO2021Smart Slit Assembly Employing Continuously Tunable MEMS Shutter
Niels Quack, Hamed Sattari, Gergely Huszka, Anton Lagosh, Benedikt Guldimann
We present the concept and detailed design of a Smart Slit Assembly for next generation spectrometers, and we experimentally demonstrate operation of an individual 221 mu m x 111 mu m smart slit channel employing a MEMS actuated shutter to continuously mod ...
SPIE-INT SOC OPTICAL ENGINEERING2021Mems Shutter Based Variable Optical Attenuator Integrated With Large Core Multimode Rectangular Waveguides
Niels Quack, Hamed Sattari, Gergely Huszka, Anton Lagosh, Benedikt Guldimann
We present the concept and design, and we report on the experimental performance of a broadband Variable Optical Attenuator (VOA) for integration with large-core rectangular multimode waveguides. Operation of an individual 221 mu m x 111 mu m optical waveg ...
IEEE2021Demonstration of Tunable Optical Aggregation of QPSK to 16-QAM Over Optically Generated Nyquist Pulse Trains Using Nonlinear Wave Mixing and a Kerr Frequency Comb
Tobias Kippenberg, Maxim Karpov, Martin Hubert Peter Pfeiffer, Arne Kordts, Fatemeh Alishahi, Ahmad Fallahpour, Cong Liu
A tunable and reconfigurable optical aggregation system is experimentally demonstrated. Optical Nyquist pulses are generated on multiple channels using a microresonator-based Kerr optical frequency comb and insertion of uniform lines by an intensity modula ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020Incommensurate crystal structure of PbHfO3
Controversy in the description/identification of so-called intermediate phase(s) in PbHfO3, stable in the range similar to 420-480 K, has existed for a few decades. A synchrotron diffraction experiment on a partially detwinned crystal allowed the structure ...
INT UNION CRYSTALLOGRAPHY2020Modulation Considerations for Modular Multilevel Converter Operating with Parallel Branches and Phase-Shifted Carriers
Drazen Dujic, Stefan Milovanovic
The branch paralleling represents one of the available options with regards to the modular multilevel converter power extension. In such a case, the main technical challenge resides in the control domain, whereas a new set of possibilities from the voltage ...
2020Demonstration of Tunable and Reconfigurable Optical Nyquist Channel Aggregation of QPSK-to-16QAM and BPSK-to-4PAM Using Nonlinear Wave Mixing and a Kerr Frequency Comb
Tobias Kippenberg, Maxim Karpov, Martin Hubert Peter Pfeiffer, Arne Kordts, Yiming Cao, Fatemeh Alishahi, Ahmad Fallahpour
A tunable and reconfigurable optical Nyquist channels aggregation is experimentally demonstrated. The proposed method two aggregate lower order modulation formats into a single higher order one. Two 16 Gbaud QPSK Nyquist pulses aggregated to a 16 QAM Nyqui ...
IEEE2019Design Techniques for High-Speed Multi-Level Viterbi Detectors and Trellis-Coded-Modulation Decoders
Andreas Peter Burg, Lukas Kull, Thomas Toifl, Giovanni Cherubini
The implementation of a 25.6-Gb/s four-level pulse-amplitude-modulation (4-PAM) reduced-state sliding-block Viterbi detector (VD) is presented. The power consumption of the VD is 105 orilV at a supply voltage of 0.7 V, corresponding to an energy efficiency ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018