@inbook{65518,
  abstract     = {{<jats:title>Abstract</jats:title>
                  <jats:p>Optically assisted digital-to-analog converters (DACs) using Nyquist pulse sequences (NPSs) are presented and investigated. Therefore, NPSs are mathematically described and analyzed. Based on this, the operating principle of a precise optical Nyquist pulse synthesizer digital-to-analog converter (PONyDAC) is described. Possible architectures of PONyDAC are derived and compared in terms of performance and practicability. Moreover, the limits of PONyDAC systems and their superiority over classical electronic DACs are discussed. Furthermore, discrete building-block based implementations and monolithic implementations in electronic-photonic integrated circuits (EPICs) are presented. To enable a practicable monolithic integration, a shrinkage of the Mach-Zehnder modulators (MZMs) has been performed by applying forward-biased phase shifters (FB-PSs). These FB-PSs are analyzed and modeled to allow the precise and reliable design of PONyDAC systems with multiple MZMs. Finally, data conversion and data transmission experiments are carried out to demonstrate the systems functionality, quantify its performance, and prove their superiority over purely electronic DACs.</jats:p>}},
  author       = {{Scheytt, J. Christoph and Schwabe, Tobias and Singh, Karanveer and Kress, Christian and Schneider, Thomas}},
  booktitle    = {{Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}},
  editor       = {{Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}},
  isbn         = {{9783032083395}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter}}},
  doi          = {{10.1007/978-3-032-08340-1_4}},
  year         = {{2026}},
}

@book{65256,
  editor       = {{Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}},
  isbn         = {{9783032083395}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}}},
  doi          = {{10.1007/978-3-032-08340-1}},
  year         = {{2026}},
}

@inproceedings{65595,
  abstract     = {{Resilient systems require monitoring and prediction of environmental and intrinsic conditions, as well as the ability to adapt to environmental hazards while optimizing the trade-off among performance, power consumption, and fault tolerance. TETRISC was introduced as a resilient multicore RISC-V processor system based on the PULPissimo platform. We introduce the migration of TETRISC to the open-source Rocket Chip SoC, targeting scalable TETRISC Chisel implementations. As such, we discuss and evaluate the main advantages and obstacles that come with the Chipyard framework for RTL simulation and FPGA synthesis, enabling rapid prototyping of resilient, scalable architectures configurable for multicore and lockstep modes.}},
  author       = {{Hannemann, Kai Arne and Luchterhandt, Lars Markus and Müller, Wolfgang and Ulbricht, Markus and Lu, Li and Scheytt, J. Christoph}},
  booktitle    = {{29. Workshop Methoden und Beschreibungssprachen zur Modellierung und Verifikation von Schaltungen und Systemen (MBMV 2026)}},
  location     = {{Würzburg}},
  title        = {{{TETRISC on Rocket Chip: A Scalable and Adaptive RISC-V Multicore Architecture}}},
  year         = {{2026}},
}

@inbook{65521,
  abstract     = {{We present recent progress made towards ultra-broadband photonically assisted analog-to-digital converters, that leverage both the low jitter of best-of-class mode-locked lasers as well as the capability of optics to break down broadband signals into multiple lower speed tributaries that can be better handled by electronics. We review in particular our work on both time- and frequency-domain approaches and give an outlook on how these architectures can be extended to include further signal processing tasks such as equalization. Optically triggered track-and-hold amplifiers are reported with an equivalent jitter below 80 fs rms in a signal frequency range from 20 GHz to 70 GHz. Frequency-domain architectures implementing optical arbitrary waveform measurement up to signal bandwidths of 610 GHz are also shown. Finally, an architecture allowing the deserialization and equalization of PAM4 signals is introduced and modeled for operation in 400 Gb/s links.}},
  author       = {{Witzens, Jeremy and Drayss, Daniel and Fang, Dengyang and Moscoso Mártir, Alvaro and Müller, Juliana and Weizel, Maxim and Zazzi, Andrea and Freude, Wolfgang and Koos, Christian and Randel, Sebastian and Scheytt, J. Christoph}},
  booktitle    = {{Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}},
  editor       = {{Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}},
  isbn         = {{9783032083395}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters}}},
  doi          = {{10.1007/978-3-032-08340-1_3}},
  year         = {{2026}},
}

@inbook{65601,
  abstract     = {{High-speed ADCs operating in the tens of gigahertz up to potentially terahertz range are largely constrained by the jitter in their clock sources. By incorporating photonically assisted samplers that exploit the ultralow jitter of specific mode-locked lasers (MLLs) as analogue ADC frontends, the performance limits of data converters can be pushed to achieve unprecedented levels of accuracy. Continuous advancements in electronic-photonic integration (silicon photonics) are clearing the path for integrating these systems on a chip scale, thereby leading to increased scalability, as well as reduced cost and power consumption.}},
  author       = {{Weizel, Maxim and Bahmanian, Meysam and Scheytt, J. Christoph}},
  booktitle    = {{Metrology for THz Communications}},
  isbn         = {{9783032019851}},
  issn         = {{0342-4111}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Integrated Photonically Assisted Samplers}}},
  doi          = {{10.1007/978-3-032-01986-8_29}},
  year         = {{2026}},
}

@inbook{65749,
  abstract     = {{<jats:title>Abstract</jats:title>
                  <jats:p>Phase noise is one of the most important properties of oscillators that limit the capacity of high-frequency communication systems. In heterodyne conversion schemes, the phase noise of the local oscillator will be multiplied and up-converted to the transmission channel. Therefore, accurate characterization of the oscillators is highly important for the design of THz communication systems. Especially when it comes to the characterization of high-quality oscillators with extremely low phase noise, traceable measurement methods are not available.</jats:p>
                  <jats:p>In this chapter, the mathematical model and definition of the amplitude noise (AM noise) and phase noise (PM noise) are given. Different phase noise definition standards such as single sideband (SSB) and double sideband will also be provided. Phase noise measurement techniques such as frequency discrimination and phase-locked loop (PLL) technique will be discussed. The standard two-channel cross correlation for statistical analysis of phase noise at levels below the detection limit of the phase noise receiver will be explained with mathematical formalism.</jats:p>}},
  author       = {{Bahmanian, Meysam and Scheytt, J. Christoph and Meyne, Nora and Kleine-Ostmann, Thomas}},
  booktitle    = {{Springer Series in Optical Sciences}},
  isbn         = {{9783032019851}},
  issn         = {{0342-4111}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Phase Noise Metrology}}},
  doi          = {{10.1007/978-3-032-01986-8_4}},
  year         = {{2026}},
}

@inbook{65748,
  abstract     = {{<jats:title>Abstract</jats:title>
                  <jats:p>In this chapter, the precision of optical clocks based on mode-locked laser (MLL) is compared with more conventional types of clock sources. It is shown that the phase noise of the optical pulse train from the MLL can be better than other types of clock sources by orders of magnitude. Then, an abstract representation of frequency synthesizer is demonstrated. Different techniques for RF generation using MLL are shown, and their pros and cons are discussed. Finally, a comparison of all these techniques is made with respect to their phase noise and capability to generate RF signal with different frequencies for different applications.</jats:p>}},
  author       = {{Bahmanian, Meysam and Scheytt, J. Christoph}},
  booktitle    = {{Springer Series in Optical Sciences}},
  isbn         = {{9783032019851}},
  issn         = {{0342-4111}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Frequency Synthesis Based on MLLs}}},
  doi          = {{10.1007/978-3-032-01986-8_28}},
  year         = {{2026}},
}

@inproceedings{58227,
  author       = {{Brockmeier, Jan and Kruse, Stephan and Scheytt, J. Christoph}},
  booktitle    = {{German Microwave Conference 2025}},
  location     = {{Dresden}},
  title        = {{{A Mach-Zehnder-Modulator based FMCW Lidar Emulator in C-Band}}},
  year         = {{2025}},
}

@inproceedings{58861,
  author       = {{Luchterhandt, Lars and Govindasamy, Vivek and Wang, Yutong and Dömer, Rainer and Müller, Wolfgang and Scheytt, J. Christoph}},
  booktitle    = {{OSSMPIC - Open Source Solutions for Massively Parallel Integrated Circuits}},
  title        = {{{Case Study on Combining Open-Source Tool Flows for Grids of Processing Cells}}},
  year         = {{2025}},
}

@article{62148,
  author       = {{Sadiye, Babak and Iftekhar, Mohammed and Müller, Wolfgang and Scheytt, J. Christoph}},
  issn         = {{1063-8210}},
  journal      = {{IEEE Transactions on Very Large Scale Integration (VLSI) Systems}},
  publisher    = {{IEEE}},
  title        = {{{60-Gb/s 1:4 Demultiplexer in 22-nm FD-SOI Technology Using TSPC Logic: A Circuit-to-System-Level Analysis and Design}}},
  doi          = {{10.1109/TVLSI.2025.3625787}},
  year         = {{2025}},
}

@inproceedings{62126,
  author       = {{Iftekhar, Mohammed and Sadiye, Babak and Müller, Wolfgang and Scheytt, J. Christoph}},
  booktitle    = {{IEEE Nordic Circuits and Systems Conference (NORCAS)}},
  location     = {{Riga, Latvia}},
  title        = {{{A 50 Gbps Reference-less NRZ Full-rate Bang-Bang CDR with Automatic Frequency Acquisition in 130 nm SiGe:C BiCMOS Technology}}},
  doi          = {{10.1109/NorCAS66540.2025.11231203}},
  year         = {{2025}},
}

@inproceedings{62270,
  author       = {{Weizel, Maxim and Malavalli Nagaraju, Harshan Gowda and Scheytt, J. Christoph}},
  booktitle    = {{2025 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS)}},
  location     = {{Phoenix, Arizona, USA}},
  publisher    = {{IEEE}},
  title        = {{{A 128 GS/s 2x Time-Interleaved Track and Hold Amplifier in 130nm SiGe BiCMOS}}},
  doi          = {{10.1109/bcicts63111.2025.11211462}},
  year         = {{2025}},
}

@inproceedings{58856,
  author       = {{Hannemann, Kai Arne and Bütün, Hüseyin Berke and Müller, Wolfgang and Scheytt, J. Christoph}},
  booktitle    = {{MBMV 2025 - 28. Workshop Methoden und Beschreibungssprachen zur Modellierung und Verifikation von Schaltungen und Systemen}},
  isbn         = {{978-3-8007-6515-7}},
  publisher    = {{VDE Verlag}},
  title        = {{{Verilator and FireSim RTL Simulations on a HPC Cluster: A Comparative Case Study}}},
  year         = {{2025}},
}

@article{62643,
  author       = {{Schwabe, Tobias and Kress, Christian and Kruse, Stephan and Weizel, Maxim and Rhee, Hanjo and Scheytt, J. Christoph}},
  journal      = {{Journal of Lightwave Technology}},
  keywords     = {{Integrated circuit modeling, Capacitance, Silicon, Modulation, Adaptation models, Semiconductor device modeling, Bandwidth, Data communication, electrooptical transmitter, equalization, free-carrier-plasma dispersion effect, modelling, optical modulator, phase shifter, silicon photonics}},
  number       = {{1}},
  pages        = {{255--270}},
  title        = {{{Forward-Biased Silicon Phase Shifter Modeling for Electronic-Photonic Co-Simulation and Validation in a 250 nm EPIC BiCMOS Technology}}},
  doi          = {{10.1109/JLT.2024.3450949}},
  volume       = {{43}},
  year         = {{2025}},
}

@inproceedings{62642,
  author       = {{Kruse, Stephan and Brockmeier, Jan and Schwengelbeck, Max and Schwabe, Tobias and Scheytt, J. Christoph}},
  booktitle    = {{2025 55th European Microwave Conference (EuMC)}},
  keywords     = {{Phased arrays, Optical fibers, Optical fiber sensors, Laser radar, Optical variables measurement, Apertures, Light emitting diodes, Optical receivers, Optical transmitters, Optical modulation, Lidar, light detection and ranging, FMCW, frequency modulated contentious wave, visible light sensing (VLS), visible light communication (VLC), automotive headlights, light emitting diode (LED), microwave photonics, wireless sensing}},
  pages        = {{602--605}},
  title        = {{{A Photonic Assisted Visible Light FMCW Lidar System for Large Aperture Phased Array MIMO Based on LEDs}}},
  doi          = {{10.23919/EuMC65286.2025.11235259}},
  year         = {{2025}},
}

@article{62644,
  author       = {{Schwabe, Tobias and Kress, Christian and Sadiye, Babak and Kruse, Stephan and Scheytt, J. Christoph}},
  journal      = {{IEEE Access}},
  keywords     = {{Optical attenuators, Equalizers, Phase shifters, Optical modulation, Electro-optic modulators, Optical amplifiers, Circuits, Silicon photonics, Optical saturation, Integrated circuit modeling, Data communication, equalization, electro-optical transmitter, silicon photonics, phase shifter, optical modulator, free-carrier plasma dispersion effect, driver architectures, biasing schemes}},
  pages        = {{192433--192450}},
  title        = {{{Analysis and Design of Forward Biased Silicon Photonics Phase Shifter Equalizer Circuits}}},
  doi          = {{10.1109/ACCESS.2025.3629385}},
  volume       = {{13}},
  year         = {{2025}},
}

@inproceedings{62641,
  author       = {{Kruse, Stephan and Diri, Jabil and Mager, Thomas and Kress, Christian and Scheytt, J. Christoph}},
  booktitle    = {{2025 55th European Microwave Conference (EuMC)}},
  keywords     = {{Optical fibers, Integrated optics, Semiconductor device measurement, Laser radar, Optical device fabrication, Photonic integrated circuits, Microwave theory and techniques, Optical fiber devices, Plastics, Substrates, Microwave photonics, photonic radar, optical LO distribution, mechatronic integrated device (MID)}},
  pages        = {{127--130}},
  title        = {{{Electrooptical Integration of an Electronic Photonic Integrated Circuit Into Plastic Substrates Using Mid-Technology}}},
  doi          = {{10.23919/EuMC65286.2025.11235121}},
  year         = {{2025}},
}

@inproceedings{62271,
  author       = {{Weizel, Maxim and Gudyriev, Sergiy and Zazzi, Andrea and Müller, Juliana and Schwabe, Tobias and Witzens, Jeremy and Scheytt, J. Christoph}},
  booktitle    = {{2025 32nd IEEE International Conference on Electronics, Circuits and Systems (ICECS)}},
  location     = {{Marrakesh, Morocco}},
  publisher    = {{IEEE}},
  title        = {{{High Voltage (5Vpp) Driver Monolithically Integrated with Thermally Tunable Optical Ring Resonators in a Silicon Photonics Technology}}},
  doi          = {{10.1109/ICECS66544.2025.11270577}},
  year         = {{2025}},
}

@inproceedings{62682,
  author       = {{Surendranath Shroff, Vijayalakshmi and Bahmanian, Meysam and Scheytt, J. Christoph}},
  booktitle    = {{2025 IEEE/MTT-S International Microwave Symposium - IMS 2025}},
  publisher    = {{IEEE}},
  title        = {{{Ultra-Low Phase Noise Frequency Synthesis Using Electro-Optic Detector-Based Comb-Microwave Synchronization}}},
  doi          = {{10.1109/ims40360.2025.11104035}},
  year         = {{2025}},
}

@article{62683,
  author       = {{Surendranath Shroff, Vijayalakshmi and Bahmanian, Meysam and Scheytt, J. Christoph}},
  journal      = {{IEEE Transactions on Microwave Theory and Techniques}},
  publisher    = {{IEEE}},
  title        = {{{Noise Folding in Optoelectronic PLLs for Ultralow Phase Noise: Modeling and Suppression With Experimental Validation}}},
  doi          = {{10.1109/TMTT.2025.3615413}},
  year         = {{2025}},
}