A5050007936- Photonic and Optical Devices
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Plasmonic and Surface Plasmon Research
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Mechanical and Optical Resonators
- Photonic Crystals and Applications
- Terahertz technology and applications
- Neural Networks and Reservoir Computing
- Optical Wireless Communication Technologies
- Nonlinear Optical Materials Research
- Molecular Junctions and Nanostructures
- Advanced Fiber Optic Sensors
- Optical Coatings and Gratings
- Photorefractive and Nonlinear Optics
- Molecular Communication and Nanonetworks
- Perovskite Materials and Applications
- Quantum Information and Cryptography
- Gold and Silver Nanoparticles Synthesis and Applications
- Organic Electronics and Photovoltaics
- Nanowire Synthesis and Applications
- Advanced MEMS and NEMS Technologies
- Microwave Engineering and Waveguides
- Gyrotron and Vacuum Electronics Research
ETH Zurich
2015-2025
Research Institute for Electromagnetic Materials
2025
Soliton Ocean Services (United States)
2020
University of Washington
2019
Board of the Swiss Federal Institutes of Technology
2016
Karlsruhe Institute of Technology
2012-2016
École Polytechnique Fédérale de Lausanne
2015
Plasmonics provides a possible route to overcome both the speed limitations of electronics and critical dimensions photonics. We present an all-plasmonic 116-gigabits per second electro-optical modulator in which all elements-the vertical grating couplers, splitters, polarization rotators, active section with phase shifters-are included single metal layer. The device can be realized on any smooth substrate surface operates low energy consumption. Our results show that plasmonics is indeed...
Broadband electro-optic intensity modulators are essential to convert electrical signals the optical domain. The growing interest in terahertz wireless applications demands with frequency responses sub-terahertz range, high power handling, and very low nonlinear distortions, simultaneously. However, a modulator all those characteristics has not been demonstrated date. Here, we experimentally demonstrate that plasmonic do trade-off any performance parameter, featuring—at same time—a short...
Energy-efficient electro-optic modulators are at the heart of short-reach optical interconnects, and silicon photonics is considered leading technology for realizing such devices. However, performance all-silicon devices limited by intrinsic material properties. In particular, absence linear effects in renders integration energy-efficient photonic–electronic interfaces challenging. Silicon–organic hybrid (SOH) can overcome these limitations combining nanophotonic waveguides with organic...
Photodetectors compatible with CMOS technology have shown great potential in implementing active silicon photonics circuits, yet current technologies are facing fundamental bandwidth limitations. Here, we propose and experimentally demonstrate for the first time a plasmonic photodetector achieving simultaneously record-high beyond 100 GHz, an internal quantum efficiency of 36% low footprint. High-speed data reception at 72 Gbit/s is demonstrated. Such superior performance attributed to...
Abstract Resonant modulators encode electrical data onto wavelength-multiplexed optical carriers. Today, silicon microring are perceived as promising to implement such links; however, they provide limited bandwidth and need thermal stabilization systems. Here we present plasmonic micro-racetrack a potential successor of microrings: equally compact compatible with complementary-metal–oxide–semiconductor-level driving voltages, but offer electro-optical bandwidths 176 GHz, 28 times improved...
Abstract Coherent optical communications provides the largest data transmission capacity with highest spectral efficiency and therefore has a remarkable potential to satisfy today’s ever-growing bandwidth demands. It relies on so-called in-phase/quadrature (IQ) electro-optic modulators that encode information both amplitude phase of light. Ideally, such IQ should offer energy-efficient operation most compact footprint, which would allow high-density integration high spatial parallelism....
Chip-scale integration of electronics and photonics is recognized as important to the future information technology, exploitation best properties electronics, photonics, plasmonics achieve this objective. However, significant challenges exist including matching sizes electronic photonic circuits; achieving low-loss transition between plasmonics; developing integrating new materials. This review focuses on a hybrid material approach illustrating importance both chemical engineering concepts....
We report on the hybrid integration of silicon-on-insulator slot waveguides with organic electro-optic materials. investigate and compare a polymer composite, dendron-based material, binary-chromophore glass (BCOG). A record-high in-device coefficient 230 pm/V is found for BCOG approach resulting in silicon-organic Mach-Zehnder modulators that feature low U <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">π</sub> L-products down to 0.52 Vmm...
We demonstrate a plasmonic Mach-Zehnder (MZ) modulator with flat frequency response exceeding 170 GHz. The comprises two phase modulators exploiting the Pockels effect of an organic electro-optic material in slot waveguides. further show modulation at 100 GBd NRZ and 60 PAM-4. electrical drive signals were generated using GSa/s digital to analog converter (DAC). high-speed small-scale devices are relevant for next-generation optical interconnects.
The performance of highly nonlinear organic electro-optic (EO) materials incorporated into nanoscale slots is examined. It shown that EO coefficients as large 190 pm/V can be obtained in 150 nm wide plasmonic slot waveguides but the decrease for narrower slots. Possible mechanism lead to such a are discussed. Monte-Carlo computer simulations performed, confirming chromophore-surface interactions one important factor influencing coefficient narrow These particular interest applications...
Abstract Terahertz sources and detectors have enabled numerous new applications from medical to communications. Yet, most efficient terahertz detection schemes rely on complex free-space optics typically require high-power lasers as local oscillators. Here, we demonstrate a fiber-coupled, monolithic plasmonic field detector silicon-photonics platform featuring bandwidth of 2.5 THz with 65 dB dynamical range. The wave is measured through its nonlinear mixing an optical probe pulse average...
Plasmonic modulators and switches have recently attracted considerable attention because they offer ultracompact size, high bandwidths, potentially low-power consumption. In this paper, we review compare the current state of art plasmonic discuss various physical phenomena that are used to perform efficient switching. More precisely, devices based on thermal effect, free carrier dispersion Pockels phase change materials switching caused by electrochemical metallization.
A scheme for the direct conversion of millimeter and THz waves to optical signals is introduced. The compact device consists a plasmonic phase modulator that seamlessly cointegrated with an antenna. Neither high-speed electronics nor electronic amplification required drive modulator. built-in enhancement electric field by factor 35 000 enables millimeter-wave domain. This high obtained via resonant antenna directly coupled means suggested concept provides simple cost-efficient alternative...
Graphene has shown great potentials for high-speed photodetection. Yet, the responsivities of graphene-based photodetectors are commonly limited by weak effective absorption atomically thin graphene. Here, we propose and experimentally demonstrate a plasmonically enhanced waveguide-integrated graphene photodetector. The device which combines 6 micron long layer with field-enhancing nano-sized metallic structures, demonstrates high external responsivity 0.5 A/W fast photoresponse way beyond...
Complementing plasmonic slot waveguides with highly nonlinear organic materials has rendered a new generation of ultracompact active nanophotonic components that are redefining the state art. In this paper, we review fundamentals so-called plasmonic- organic-hybrid (POH) platform. Starting from simple phase shifters to most compact IQ modulators, introduce key devices high-speed data communications. For instance, all-plasmonic Mach-Zehnder modulators (MZMs) reviewed and long-term prospects...
We summarize our experimental exploration of the capabilities an ultrabroad-bandwidth plasmonic Mach-Zehnder modulator (MZM), in intensity modulation and direct detection (IM/DD) system for short-reach optical transmission up to 10 km. study modulation, transmission, reception ultrahigh-symbol-rate (up 304 GBd) multi-level signals with two different signaling schemes: pulse amplitude (PAM), 8 levels partial-response-encoded binary (polybinary) memory length 4. By mapping performance a...
We demonstrate compact highly efficient broadband strip-to-slot mode converters in silicon with record-low losses of 0.02 ( <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\pm$</tex></formula> 0.02) dB and negligible reflections between 1480 nm 1580 nm. The new transition is logarithmically tapered, which enables a design. logarithmic tapers are compared more conventional linearly tapered converters.
A new organic electro-optic (EO) molecule was designed with two modifications aimed at increasing acentric order. The is based on the well-known CLD donor-π bridge-acceptor template. first structural modification introduces rigid aromatic fluorenyl and naphthyl site-isolation units (sterically bulky functional groups) to reduce aggregation. Site isolation have been used in past, but this time that both "front" "back" of tetraene bridge modified units, we had introduce synthetic methodology...
We report on high-extinction-ratio, ultrafast plasmonic Mach-Zehnder modulators. demonstrate data modulation at line rates up to 72 Gbit/s (BPSK) and 108 (4-ASK). The driving voltages are U <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</sub> = 4 2.5 V xmlns:xlink="http://www.w3.org/1999/xlink">p</sub> for 12.5 25 μm short devices, respectively. frequency response shows no bandwidth limitations 70 GHz. Static characterizations indicate...