Dieter Knoll

Learn More
A novel waveguide-coupled germanium p-i-n photodiode is demonstrated which combines high responsivity with very high -3 dB bandwidth at a medium dark current. Bandwidth values are 40 GHz at zero bias and more than 70 GHz at -1 V. Responsivity at 1.55 µm wavelength ranges from 0.84 A/W at zero bias to 1 A/W at -1 V. Room temperature dark current density at(More)
Photonic BiCMOS is a novel technology for fabricating electronic-photonic integrated circuits. Broadband silicon photonics devices such as germanium photodiodes and depletion type Mach-Zehnder modulators were monolithically integrated in a high performance SiGe BiCMOS baseline process. Integration aspects and examples of demonstrator circuits shall be(More)
We present a photonic BiCMOS process enabling for monolithically integrated Si-based transceiver front-ends towards single-wavelength 400 Gb/s data rate by combining segmented Mach-Zehnder-Interferometer modulators and high-speed germanium photo detectors with high-performance electronics.
In this paper, a monolithically integrated segmented linear driver and Mach-Zehnder modulator (MZM) are presented. The transmitter is fabricated in electronic-photonic integrated circuit 0.25-&#x03BC;m SiGe:C BiCMOS technology, with f<sub>T</sub>/f<sub>max</sub> = 190 GHz. The driver and the modulator are divided into 16 segments and the MZM phase shifter(More)
The performance of layered Pr<sub>2</sub>Ti<sub>2</sub>O<sub>7 </sub>/SiO<sub>2</sub> MIM capacitors for mixed-signal and RF device applications is presented for the first time. A capacitance density of 3.2 fF/mum<sup>2</sup> with a very low leakage parameter of 5 fA/pFV and quadratic voltage capacitance coefficient of -100 ppm/V<sup>2</sup> was achieved.(More)
Bernhard Goll*, David J. Thomson, Lars Zimmermann, Henri Porte, Frederic Y. Gardes, Youfang Hu, Dieter Knoll, Stefan Lischke, Bernd Tillack, Graham T. Reed and Horst Zimmermann 1 Institute of Electrodynamics, Microwave and Circuit Engineering (EMCE), Vienna University of Technology, Vienna, Austria 2 Optoelectronics Research Centre (ORC), University of(More)
  • 1