10 GB/s bit-synchronizer circuit with automatic timing alignment by clock phase shifting using quantum-well AlGaAs/GaAs/AlGaAs. - Peter Wennekers; Ulrich Novotny; Axel Hülsmann; Gudrun Kaufel; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1992)

Integrated laser-diode voltage driver for 20-Gb/s optical systems using 0.3- mu m gate length quantum-well HEMT's. - Zhi-Gong Wang; Manfred Berroth; Ulrich Nowotny; Manfred Ludwig; Peter Hofmann; Axel Hülsmann; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1993)

An 18-34-GHz dynamic frequency divider based on 0.2- mu m AlGaAs/GaAs/AlGaAs quantum-well transistors. - Andreas Thiede; Manfred Berroth; Ulrich Nowotny; Jorg Seibel; Roland Bosch; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1993)

7.5 Gb/s monolithically integrated clock recovery circuit using PLL and 0.3-μm gate length quantum well HEMT's. - Zhi-Gong Wang; Manfred Berroth; Ulrich Nowotny; Peter Hofmann; Axel Hiilsmann; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1994)

20-40 Gb/s 0.2-μm GaAs HEMT chip set for optical data receiver. - Manfred Lang; Zhi-Gong Wang; Zhihao Lao; Michael Schlechtweg; Andreas Thiede; Michaela Rieger-Motzer; Martin Sedler; Wolfgang Bronner; Gudrun Kaufel; Klaus Köhler; Axel Hülsmann; Brian Raynor (IEEE J. Solid State Circuits, 1997)

35-GHz static and 48-GHz dynamic frequency divider ICs using 0.2-μm AlGaAs/GaAs-HEMTs. - Zhihao Lao; Wolfgang Bronner; Andreas Thiede; Michael Schlechtweg; Axel Hülsmann; Michaela Rieger-Motzer; Gudrun Kaufel; Brian Raynor; Martin Sedler (IEEE J. Solid State Circuits, 1997)

40-Gb/s high-power modulator driver IC for lightwave communication systems. - Zhihao Lao; Andreas Thiede; Ulrich Nowotny; Hariolf Lienhart; Volker Hurm; Michael Schlechtweg; Jochen Hornung; Wolfgang Bronner; Klaus Köhler; Axel Hülsmann; Brian Raynor; Theo Jakobus (IEEE J. Solid State Circuits, 1998)