---
_id: '65518'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n                  <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:
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  id: '37144'
  last_name: Scheytt
  orcid: '0000-0002-5950-6618 '
- first_name: Tobias
  full_name: Schwabe, Tobias
  id: '39217'
  last_name: Schwabe
- first_name: Karanveer
  full_name: Singh, Karanveer
  last_name: Singh
- first_name: Christian
  full_name: Kress, Christian
  id: '13256'
  last_name: Kress
  orcid: 0000-0002-4403-2237
- first_name: Thomas
  full_name: Schneider, Thomas
  last_name: Schneider
citation:
  ama: 'Scheytt JC, Schwabe T, Singh K, Kress C, Schneider T. Precise Optical Nyquist
    Pulse Synthesizer Digital-to-Analog Converter. In: Scheytt JC, Kress C, Berroth
    M, Pachnicke S, Witzens J, eds. <i>Electronic-Photonic Integrated Systems for
    Ultrafast Signal Processing</i>. Springer Nature Switzerland; 2026. doi:<a href="https://doi.org/10.1007/978-3-032-08340-1_4">10.1007/978-3-032-08340-1_4</a>'
  apa: Scheytt, J. C., Schwabe, T., Singh, K., Kress, C., &#38; Schneider, T. (2026).
    Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter. In J. C.
    Scheytt, C. Kress, M. Berroth, S. Pachnicke, &#38; J. Witzens (Eds.), <i>Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing</i>. Springer Nature Switzerland.
    <a href="https://doi.org/10.1007/978-3-032-08340-1_4">https://doi.org/10.1007/978-3-032-08340-1_4</a>
  bibtex: '@inbook{Scheytt_Schwabe_Singh_Kress_Schneider_2026, place={Cham}, title={Precise
    Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter}, DOI={<a href="https://doi.org/10.1007/978-3-032-08340-1_4">10.1007/978-3-032-08340-1_4</a>},
    booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing},
    publisher={Springer Nature Switzerland}, author={Scheytt, J. Christoph and Schwabe,
    Tobias and Singh, Karanveer and Kress, Christian and Schneider, Thomas}, editor={Scheytt,
    J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan
    and Witzens, Jeremy}, year={2026} }'
  chicago: 'Scheytt, J. Christoph, Tobias Schwabe, Karanveer Singh, Christian Kress,
    and Thomas Schneider. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog
    Converter.” In <i>Electronic-Photonic Integrated Systems for Ultrafast Signal
    Processing</i>, edited by J. Christoph Scheytt, Christian Kress, Manfred Berroth,
    Stephan Pachnicke, and Jeremy Witzens. Cham: Springer Nature Switzerland, 2026.
    <a href="https://doi.org/10.1007/978-3-032-08340-1_4">https://doi.org/10.1007/978-3-032-08340-1_4</a>.'
  ieee: 'J. C. Scheytt, T. Schwabe, K. Singh, C. Kress, and T. Schneider, “Precise
    Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter,” in <i>Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing</i>, J. C. Scheytt, C. Kress,
    M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham: Springer Nature Switzerland,
    2026.'
  mla: Scheytt, J. Christoph, et al. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog
    Converter.” <i>Electronic-Photonic Integrated Systems for Ultrafast Signal Processing</i>,
    edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:<a
    href="https://doi.org/10.1007/978-3-032-08340-1_4">10.1007/978-3-032-08340-1_4</a>.
  short: 'J.C. Scheytt, T. Schwabe, K. Singh, C. Kress, T. Schneider, in: J.C. Scheytt,
    C. Kress, M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated
    Systems for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-04-29T14:14:21Z
date_updated: 2026-04-29T14:28:40Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1_4
editor:
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  last_name: Scheytt
- first_name: Christian
  full_name: Kress, Christian
  last_name: Kress
- first_name: Manfred
  full_name: Berroth, Manfred
  last_name: Berroth
- first_name: Stephan
  full_name: Pachnicke, Stephan
  last_name: Pachnicke
- first_name: Jeremy
  full_name: Witzens, Jeremy
  last_name: Witzens
language:
- iso: eng
place: Cham
publication: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
publication_identifier:
  isbn:
  - '9783032083395'
  - '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter
type: book_chapter
user_id: '13256'
year: '2026'
...
---
_id: '65256'
citation:
  ama: Scheytt JC, Kress C, Berroth M, Pachnicke S, Witzens J, eds. <i>Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing</i>. Springer Nature Switzerland;
    2026. doi:<a href="https://doi.org/10.1007/978-3-032-08340-1">10.1007/978-3-032-08340-1</a>
  apa: Scheytt, J. C., Kress, C., Berroth, M., Pachnicke, S., &#38; Witzens, J. (Eds.).
    (2026). <i>Electronic-Photonic Integrated Systems for Ultrafast Signal Processing</i>.
    Springer Nature Switzerland. <a href="https://doi.org/10.1007/978-3-032-08340-1">https://doi.org/10.1007/978-3-032-08340-1</a>
  bibtex: '@book{Scheytt_Kress_Berroth_Pachnicke_Witzens_2026, place={Cham}, title={Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing}, DOI={<a href="https://doi.org/10.1007/978-3-032-08340-1">10.1007/978-3-032-08340-1</a>},
    publisher={Springer Nature Switzerland}, year={2026} }'
  chicago: 'Scheytt, J. Christoph, Christian Kress, Manfred Berroth, Stephan Pachnicke,
    and Jeremy Witzens, eds. <i>Electronic-Photonic Integrated Systems for Ultrafast
    Signal Processing</i>. Cham: Springer Nature Switzerland, 2026. <a href="https://doi.org/10.1007/978-3-032-08340-1">https://doi.org/10.1007/978-3-032-08340-1</a>.'
  ieee: 'J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds.,
    <i>Electronic-Photonic Integrated Systems for Ultrafast Signal Processing</i>.
    Cham: Springer Nature Switzerland, 2026.'
  mla: Scheytt, J. Christoph, et al., editors. <i>Electronic-Photonic Integrated Systems
    for Ultrafast Signal Processing</i>. Springer Nature Switzerland, 2026, doi:<a
    href="https://doi.org/10.1007/978-3-032-08340-1">10.1007/978-3-032-08340-1</a>.
  short: J.C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, J. Witzens, eds., Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing, Springer Nature Switzerland,
    Cham, 2026.
date_created: 2026-03-31T09:02:20Z
date_updated: 2026-04-30T06:10:44Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1
editor:
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  id: '37144'
  last_name: Scheytt
  orcid: '0000-0002-5950-6618 '
- first_name: Christian
  full_name: Kress, Christian
  id: '13256'
  last_name: Kress
  orcid: 0000-0002-4403-2237
- first_name: Manfred
  full_name: Berroth, Manfred
  last_name: Berroth
- first_name: Stephan
  full_name: Pachnicke, Stephan
  last_name: Pachnicke
- first_name: Jeremy
  full_name: Witzens, Jeremy
  last_name: Witzens
language:
- iso: eng
place: Cham
publication_identifier:
  isbn:
  - '9783032083395'
  - '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
type: book_editor
user_id: '13256'
year: '2026'
...
---
_id: '65521'
abstract:
- lang: eng
  text: 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:
- first_name: Jeremy
  full_name: Witzens, Jeremy
  last_name: Witzens
- first_name: Daniel
  full_name: Drayss, Daniel
  last_name: Drayss
- first_name: Dengyang
  full_name: Fang, Dengyang
  last_name: Fang
- first_name: Alvaro
  full_name: Moscoso Mártir, Alvaro
  last_name: Moscoso Mártir
- first_name: Juliana
  full_name: Müller, Juliana
  last_name: Müller
- first_name: Maxim
  full_name: Weizel, Maxim
  id: '44271'
  last_name: Weizel
  orcid: 0000-0003-2699-9839
- first_name: Andrea
  full_name: Zazzi, Andrea
  last_name: Zazzi
- first_name: Wolfgang
  full_name: Freude, Wolfgang
  last_name: Freude
- first_name: Christian
  full_name: Koos, Christian
  last_name: Koos
- first_name: Sebastian
  full_name: Randel, Sebastian
  last_name: Randel
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  id: '37144'
  last_name: Scheytt
  orcid: '0000-0002-5950-6618 '
citation:
  ama: 'Witzens J, Drayss D, Fang D, et al. Ultra-Broadband Photonically Assisted
    Analog-to-Digital-Converters. In: Scheytt JC, Kress C, Berroth M, Pachnicke S,
    Witzens J, eds. <i>Electronic-Photonic Integrated Systems for Ultrafast Signal
    Processing</i>. Springer Nature Switzerland; 2026. doi:<a href="https://doi.org/10.1007/978-3-032-08340-1_3">10.1007/978-3-032-08340-1_3</a>'
  apa: Witzens, J., Drayss, D., Fang, D., Moscoso Mártir, A., Müller, J., Weizel,
    M., Zazzi, A., Freude, W., Koos, C., Randel, S., &#38; Scheytt, J. C. (2026).
    Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters. In J. C. Scheytt,
    C. Kress, M. Berroth, S. Pachnicke, &#38; J. Witzens (Eds.), <i>Electronic-Photonic
    Integrated Systems for Ultrafast Signal Processing</i>. Springer Nature Switzerland.
    <a href="https://doi.org/10.1007/978-3-032-08340-1_3">https://doi.org/10.1007/978-3-032-08340-1_3</a>
  bibtex: '@inbook{Witzens_Drayss_Fang_Moscoso Mártir_Müller_Weizel_Zazzi_Freude_Koos_Randel_et
    al._2026, place={Cham}, title={Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters},
    DOI={<a href="https://doi.org/10.1007/978-3-032-08340-1_3">10.1007/978-3-032-08340-1_3</a>},
    booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing},
    publisher={Springer Nature Switzerland}, 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 et al.}, editor={Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred
    and Pachnicke, Stephan and Witzens, Jeremy}, year={2026} }'
  chicago: 'Witzens, Jeremy, Daniel Drayss, Dengyang Fang, Alvaro Moscoso Mártir,
    Juliana Müller, Maxim Weizel, Andrea Zazzi, et al. “Ultra-Broadband Photonically
    Assisted Analog-to-Digital-Converters.” In <i>Electronic-Photonic Integrated Systems
    for Ultrafast Signal Processing</i>, edited by J. Christoph Scheytt, Christian
    Kress, Manfred Berroth, Stephan Pachnicke, and Jeremy Witzens. Cham: Springer
    Nature Switzerland, 2026. <a href="https://doi.org/10.1007/978-3-032-08340-1_3">https://doi.org/10.1007/978-3-032-08340-1_3</a>.'
  ieee: 'J. Witzens <i>et al.</i>, “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters,”
    in <i>Electronic-Photonic Integrated Systems for Ultrafast Signal Processing</i>,
    J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham:
    Springer Nature Switzerland, 2026.'
  mla: Witzens, Jeremy, et al. “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters.”
    <i>Electronic-Photonic Integrated Systems for Ultrafast Signal Processing</i>,
    edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:<a
    href="https://doi.org/10.1007/978-3-032-08340-1_3">10.1007/978-3-032-08340-1_3</a>.
  short: 'J. Witzens, D. Drayss, D. Fang, A. Moscoso Mártir, J. Müller, M. Weizel,
    A. Zazzi, W. Freude, C. Koos, S. Randel, J.C. Scheytt, in: J.C. Scheytt, C. Kress,
    M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated Systems
    for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-04-30T06:07:38Z
date_updated: 2026-05-11T07:56:04Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1_3
editor:
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  last_name: Scheytt
- first_name: Christian
  full_name: Kress, Christian
  last_name: Kress
- first_name: Manfred
  full_name: Berroth, Manfred
  last_name: Berroth
- first_name: Stephan
  full_name: Pachnicke, Stephan
  last_name: Pachnicke
- first_name: Jeremy
  full_name: Witzens, Jeremy
  last_name: Witzens
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://link.springer.com/content/pdf/10.1007/978-3-032-08340-1.pdf
oa: '1'
place: Cham
project:
- _id: '303'
  name: 'SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler
    (PACE) - Phase 2'
publication: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
publication_identifier:
  isbn:
  - '9783032083395'
  - '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters
type: book_chapter
user_id: '44271'
year: '2026'
...