Journal
NATURE PHOTONICS
Volume 12, Issue 10, Pages 625-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41566-018-0237-x
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Funding
- European Research Council (ERC Starting Grant 'EnTeraPIC') [280145]
- ERC Consolidator Grant 'TeraSHAPE' [773248]
- Alfried Krupp von Bohlen und Halbach Foundation
- Helmholtz International Research School of Teratronics (HIRST)
- Karlsruhe School of Optics and Photonics (KSOP)
- Karlsruhe Nano Micro Facility (KNMF)
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Optoelectronic signal processing offers great potential for generation and detection of ultra-broadband waveforms in the terahertz range (so-called T-waves). However, fabrication of the underlying devices still relies on complex processes using dedicated III-V semiconductor substrates. This severely restricts the application potential of current T-wave transmitters and receivers and impedes co-integration of these devices with advanced photonic signal processing circuits. Here, we demonstrate that these limitations can be overcome by plasmonic internal-photoemission detectors (PIPEDs). PIPEDs can be realized on the silicon photonic platform, which allows exploiting the enormous opportunities of the associated device portfolio. In our experiments, we demonstrate both T-wave signal generation and coherent detection at frequencies up to 1 THz. To prove the viability of our concept, we monolithically integrate PIPED transmitters and receivers on a common silicon chip and use them to measure the complex transfer impedance of an integrated T-wave device.
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