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Gunther Roelkens on Muck Rack

Gunther Roelkens

As seen in: Nature, IEEE Spectrum, Optica
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Articles

A high-speed heterogeneous lithium tantalate silicon photonics platform - Nature Photonics

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By Tingting Zhai, Arno Moerman, Nishant Singh, Sam Lemey, Xin Yin, Joris Van Campenhout, Gunther Roelkens, Bart Kuyken, Margot Niels, Tom Vanackere, Ewoud Vissers, Patrick Nenezic, Jakob Declercq, Olivier Caytan
| Nature Verified
Abstract The rapid expansion of cloud computing and artificial intelligence has driven the demand for faster optical components in data centres to unprecedented levels. A key advancement in this field is the integration of multiple photonic components onto a single chip, enhancing the performance of optical transceivers. Here silicon photonics, benefiting from mature fabrication processes, has gained prominence in both academic research and industrial applications.
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Heterogeneous integration of GaInAsSb–GaSb photodiodes on SOI photonic integrated circuits for SWIR applications

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By Gunther Roelkens
| Optica Verified
We demonstrate the heterogeneous integration of GaInAsSb–GaSb photodiodes on 220 nm SOI photonic integrated circuits (PICs) using the micro-transfer-printing (μTP) technology, for operation in the short-wave infrared (SWIR) wavelength region. Utilizing an evanescent coupling scheme between a silicon waveguide and a III–V structure, the device exhibits a room temperature responsivity of 1.23 and 1.25 A/W at 2.3 and 2.45 μm, respectively.
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4 Ways to Put Lasers on Silicon

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By Roel Baets, Gunther Roelkens, Joris Van Campenhout, Bernardette Kunert
| IEEE Spectrum Verified
Photonic integrated circuits, which combine a collection of optoelectronic functions on a single chip, are an increasingly common part of everyday life. They are used in high-speed optical transceivers that link server racks in data centers, including the one used to deliver the IEEE Spectrum website, in lidars to keep self-driving cars on track, and in spectrometers to spot chemicals in the atmosphere, among many other applications.
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