Andreas Messner

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Messner

First Name

Andreas

ORCID

0000-0002-7849-9644

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Publications 1 - 10 of 46

Plasmonic, photonic, or hybrid? Reviewing waveguide geometries for electro-optic modulators
Messner, Andreas; Moor, David; Chelladurai, Daniel; et al. (2023)
APL Photonics
Electro-optic modulators are key elements in high-speed optical telecommunication links and preferably rely on materials with a linear electro-optic effect. Choosing adequate waveguide geometries is a key challenge in the design of electro-optic modulators. While all-dielectric geometries promise high-speed modulation with low propagation loss, their modulation efficiency suffers from low confinement and weak electrical fields, resulting in lengthy devices. Plasmonic geometries, on the other hand, allow for most compact devices featuring highest electro-optical bandwidths, but at the cost of higher losses. Alternatively, hybrid photonic–plasmonic solutions open a sweet spot for high-speed modulators with moderate loss. In this review, we discuss the three waveguide types by analyzing and comparing their performance and their sensitivity to variations in geometry with respect to a choice of the electro-optical Pockels-effect material.
Low-Loss Graphene Organic Hybrid Phase Modulators
Ma, Ping; Zhang, Xinzhi; Heni, Wolfgang; et al. (2022)
OSA Technical Digest ~ Conference on Lasers and Electro-Optics
Ultra-short, low-loss graphene-organic hybrid phase modulators are introduced. 20 Gbit/s PAM-2 and PAM-4 data modulation are demonstrated with devices of 25 μm length and on-chip losses of 0.86 dB
>150 GHz Hybrid-Plasmonic BaTiO3-On-SOI Modulator for CMOS Foundry Integration
Moor, David; Winiger, Joel; Ma, Ping; et al. (2021)
Frontiers in Optics + Laser Science 2021
A ferroelectric, metal-oxide-semiconductor (MOS) based, hybrid-plasmonic modulator is shown to feature bandwidths of >150 GHz and is tested with 32 Gbit/s NRZ. The device is relying on BaTiO3-on-SOI and potentially offers CMOS compatibility.
Pockels-effect materials for plasmonic modulators
Messner, Andreas; Haffner, Christian; Heni, Wolfgang; et al. (2018)
OSA Technical Digest ~ Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF)
High-Speed Plasmonic Modulator for Simultaneous C- and O-Band Modulation with Simplified Fabrication
Messner, Andreas; Jud, Pascal A.; Winiger, Joel; et al. (2020)
OSA Technical Digest ~ Optical Fiber Communication Conference (OFC) 2020
A plasmonic modulator spanning both C- and O-band for dual-band data modulation up to 100 Gbit/s in one single device is presented. Fiber-to-fiber insertion loss can be as low as 11 dB. (C) 2020 The Author(s)
Broadband Metallic Fiber-to-Chip Couplers and a Low-Complexity Integrated Plasmonic Platform
Messner, Andreas; Jud, Pascal A.; Winiger, Joel; et al. (2021)
Nano Letters
We present a plasmonic platform featuring efficient, broadband metallic fiber-to-chip couplers that directly interface plasmonic slot waveguides, such as compact and high-speed electro-optic modulators. The metallic gratings exhibit an experimental fiber-to-slot coupling efficiency of −2.7 dB with −1.4 dB in simulations with the same coupling principle. Further, they offer a huge spectral window with a 3 dB passband of 350 nm. The technology relies on a vertically arranged layer stack, metal–insulator–metal waveguides, and fiber-to-slot couplers and is formed in only one lithography step with a minimum feature size of 250 nm. As an application example, we fabricate new modulator devices with an electro-optic organic material in the slot waveguide and reach 50 and 100 Gbit/s data modulation in the O- and C-bands within the same device. The devices’ broad spectral bandwidth and their relaxed fabrication may render them suitable for experiments and applications in the scope of sensing, nonlinear optics, or telecommunications.
Plasmonic Ferroelectric Modulator Monolithically Integrated on SiN for 216 GBd Data Transmission
Kohli, Manuel; Chelladurai, Daniel; Messner, Andreas; et al. (2023)
Journal of Lightwave Technology
A high-speed plasmonic barium titanate (BTO, BaTiO3) Mach-Zehnder modulator is presented. We combine nanoscale plasmonics with BTO as solid-state active material and silicon nitride (SiN) for versatile and low loss waveguiding, and integrate them in a monolithic platform. We demonstrate a plasmonic BTO modulator processed onto foundry-produced SiN. The 15 μm long high-speed modulator features a flat electro-optic frequency response up to 70 GHz and is expected to be flat way beyond. A low VπL product of 144 Vμm is shown. Data experiments reaching 216 Gbit/s with a 216 GBd 2PAM signal and 256 Gbit/s with a 128 GBd 4PAM signal are demonstrated. The merger of the versatile silicon nitride platform with high-speed plasmonics using the highly nonlinear ferroelectric BTO is an attractive solution as a future Tb/s optical interconnect platform.
Highly Efficient Grating Coupler for Silicon Nitride Photonics with Large Fabrication Tolerance
Kohli, Manuel; Messner, Andreas; Buriakova, Tatiana; et al. (2021)
Integrated Photonics Research, Silicon and Nanophotonics : part of Advanced Photonics Congress
We demonstrate low-loss fiber-to-chip coupling via a-Si grating couplers on top of SiN waveguides for C-band TE light. The suggested simple scheme is fabrication tolerant and offers a path towards coupling efficiencies above -1 dB.
Integrated Ferroelectric Plasmonic Optical Modulator
Messner, Andreas; Eltes, Felix; Ma, Ping; et al. (2017)
Optical Fiber Communication Conference
Ultra-Compact 0.8 Tbit/s Plasmonic Modulator Array
Koch, Ueli; Messner, Andreas; Hoessbacher, Claudia; et al. (2018)
2018 European Conference on Optical Communication (ECOC)

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Andreas Messner

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