---
_id: '62643'
author:
- first_name: Tobias
  full_name: Schwabe, Tobias
  id: '39217'
  last_name: Schwabe
- first_name: Christian
  full_name: Kress, Christian
  id: '13256'
  last_name: Kress
  orcid: 0000-0002-4403-2237
- first_name: Stephan
  full_name: Kruse, Stephan
  id: '38254'
  last_name: Kruse
- first_name: Maxim
  full_name: Weizel, Maxim
  id: '44271'
  last_name: Weizel
  orcid: 0000-0003-2699-9839
- first_name: Hanjo
  full_name: Rhee, Hanjo
  last_name: Rhee
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  id: '37144'
  last_name: Scheytt
  orcid: '0000-0002-5950-6618 '
citation:
  ama: Schwabe T, Kress C, Kruse S, Weizel M, Rhee H, Scheytt JC. Forward-Biased Silicon
    Phase Shifter Modeling for Electronic-Photonic Co-Simulation and Validation in
    a 250 nm EPIC BiCMOS Technology. <i>Journal of Lightwave Technology</i>. 2025;43(1):255-270.
    doi:<a href="https://doi.org/10.1109/JLT.2024.3450949">10.1109/JLT.2024.3450949</a>
  apa: Schwabe, T., Kress, C., Kruse, S., Weizel, M., Rhee, H., &#38; Scheytt, J.
    C. (2025). Forward-Biased Silicon Phase Shifter Modeling for Electronic-Photonic
    Co-Simulation and Validation in a 250 nm EPIC BiCMOS Technology. <i>Journal of
    Lightwave Technology</i>, <i>43</i>(1), 255–270. <a href="https://doi.org/10.1109/JLT.2024.3450949">https://doi.org/10.1109/JLT.2024.3450949</a>
  bibtex: '@article{Schwabe_Kress_Kruse_Weizel_Rhee_Scheytt_2025, title={Forward-Biased
    Silicon Phase Shifter Modeling for Electronic-Photonic Co-Simulation and Validation
    in a 250 nm EPIC BiCMOS Technology}, volume={43}, DOI={<a href="https://doi.org/10.1109/JLT.2024.3450949">10.1109/JLT.2024.3450949</a>},
    number={1}, journal={Journal of Lightwave Technology}, author={Schwabe, Tobias
    and Kress, Christian and Kruse, Stephan and Weizel, Maxim and Rhee, Hanjo and
    Scheytt, J. Christoph}, year={2025}, pages={255–270} }'
  chicago: 'Schwabe, Tobias, Christian Kress, Stephan Kruse, Maxim Weizel, Hanjo Rhee,
    and J. Christoph Scheytt. “Forward-Biased Silicon Phase Shifter Modeling for Electronic-Photonic
    Co-Simulation and Validation in a 250 Nm EPIC BiCMOS Technology.” <i>Journal of
    Lightwave Technology</i> 43, no. 1 (2025): 255–70. <a href="https://doi.org/10.1109/JLT.2024.3450949">https://doi.org/10.1109/JLT.2024.3450949</a>.'
  ieee: 'T. Schwabe, C. Kress, S. Kruse, M. Weizel, H. Rhee, and J. C. Scheytt, “Forward-Biased
    Silicon Phase Shifter Modeling for Electronic-Photonic Co-Simulation and Validation
    in a 250 nm EPIC BiCMOS Technology,” <i>Journal of Lightwave Technology</i>, vol.
    43, no. 1, pp. 255–270, 2025, doi: <a href="https://doi.org/10.1109/JLT.2024.3450949">10.1109/JLT.2024.3450949</a>.'
  mla: Schwabe, Tobias, et al. “Forward-Biased Silicon Phase Shifter Modeling for
    Electronic-Photonic Co-Simulation and Validation in a 250 Nm EPIC BiCMOS Technology.”
    <i>Journal of Lightwave Technology</i>, vol. 43, no. 1, 2025, pp. 255–70, doi:<a
    href="https://doi.org/10.1109/JLT.2024.3450949">10.1109/JLT.2024.3450949</a>.
  short: T. Schwabe, C. Kress, S. Kruse, M. Weizel, H. Rhee, J.C. Scheytt, Journal
    of Lightwave Technology 43 (2025) 255–270.
date_created: 2025-11-27T07:14:34Z
date_updated: 2025-11-27T07:16:01Z
department:
- _id: '58'
doi: 10.1109/JLT.2024.3450949
intvolume: '        43'
issue: '1'
keyword:
- 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
language:
- iso: eng
page: 255-270
publication: Journal of Lightwave Technology
status: public
title: Forward-Biased Silicon Phase Shifter Modeling for Electronic-Photonic Co-Simulation
  and Validation in a 250 nm EPIC BiCMOS Technology
type: journal_article
user_id: '38254'
volume: 43
year: '2025'
...
---
_id: '17657'
abstract:
- lang: eng
  text: Inter-datacenter transfers of non-interactive but timely large flows over
    a private (managed) network is an important problem faced by many cloud service
    providers. The considered flows are non-interactive because they do not explicitly
    target the end users. However, most of them must be performed on a timely basis
    and are associated with a deadline. We propose to schedule these flows by a centralized
    controller, which determines when to transmit each flow and which path to use.
    Two scheduling models are presented in this paper. In the first, the controller
    also determines the rate of each flow, while in the second bandwidth is assigned
    by the network according to the TCP rules. We develop scheduling algorithms for
    both models and compare their complexity and performance.
author:
- first_name: R.
  full_name: Cohen, R.
  last_name: Cohen
- first_name: Gleb
  full_name: Polevoy, Gleb
  id: '83983'
  last_name: Polevoy
citation:
  ama: Cohen R, Polevoy G. Inter-Datacenter Scheduling of Large Data Flows. <i>Cloud
    Computing, IEEE Transactions on</i>. 2015;PP(99):1-1. doi:<a href="https://doi.org/10.1109/TCC.2015.2487964">10.1109/TCC.2015.2487964</a>
  apa: Cohen, R., &#38; Polevoy, G. (2015). Inter-Datacenter Scheduling of Large Data
    Flows. <i>Cloud Computing, IEEE Transactions On</i>, <i>PP</i>(99), 1–1. <a href="https://doi.org/10.1109/TCC.2015.2487964">https://doi.org/10.1109/TCC.2015.2487964</a>
  bibtex: '@article{Cohen_Polevoy_2015, title={Inter-Datacenter Scheduling of Large
    Data Flows}, volume={PP}, DOI={<a href="https://doi.org/10.1109/TCC.2015.2487964">10.1109/TCC.2015.2487964</a>},
    number={99}, journal={Cloud Computing, IEEE Transactions on}, author={Cohen, R.
    and Polevoy, Gleb}, year={2015}, pages={1–1} }'
  chicago: 'Cohen, R., and Gleb Polevoy. “Inter-Datacenter Scheduling of Large Data
    Flows.” <i>Cloud Computing, IEEE Transactions On</i> PP, no. 99 (2015): 1–1. <a
    href="https://doi.org/10.1109/TCC.2015.2487964">https://doi.org/10.1109/TCC.2015.2487964</a>.'
  ieee: R. Cohen and G. Polevoy, “Inter-Datacenter Scheduling of Large Data Flows,”
    <i>Cloud Computing, IEEE Transactions on</i>, vol. PP, no. 99, pp. 1–1, 2015.
  mla: Cohen, R., and Gleb Polevoy. “Inter-Datacenter Scheduling of Large Data Flows.”
    <i>Cloud Computing, IEEE Transactions On</i>, vol. PP, no. 99, 2015, pp. 1–1,
    doi:<a href="https://doi.org/10.1109/TCC.2015.2487964">10.1109/TCC.2015.2487964</a>.
  short: R. Cohen, G. Polevoy, Cloud Computing, IEEE Transactions On PP (2015) 1–1.
date_created: 2020-08-06T15:20:58Z
date_updated: 2022-01-06T06:53:16Z
department:
- _id: '63'
- _id: '541'
doi: 10.1109/TCC.2015.2487964
extern: '1'
issue: '99'
keyword:
- Approximation algorithms
- Approximation methods
- Bandwidth
- Cloud computing
- Routing
- Schedules
- Scheduling
language:
- iso: eng
page: 1-1
publication: Cloud Computing, IEEE Transactions on
publication_identifier:
  issn:
  - 2168-7161
status: public
title: Inter-Datacenter Scheduling of Large Data Flows
type: journal_article
user_id: '83983'
volume: PP
year: '2015'
...
---
_id: '17663'
abstract:
- lang: eng
  text: 'In this paper, we define and study a new problem, referred to as the Dependent
    Unsplittable Flow Problem (D-UFP). We present and discuss this problem in the
    context of large-scale powerful (radar/camera) sensor networks, but we believe
    it has important applications on the admission of large flows in other networks
    as well. In order to optimize the selection of flows transmitted to the gateway,
    D-UFP takes into account possible dependencies between flows. We show that D-UFP
    is more difficult than NP-hard problems for which no good approximation is known.
    Then, we address two special cases of this problem: the case where all the sensors
    have a shared channel and the case where the sensors form a mesh and route to
    the gateway over a spanning tree.'
author:
- first_name: R.
  full_name: Cohen, R.
  last_name: Cohen
- first_name: I.
  full_name: Nudelman, I.
  last_name: Nudelman
- first_name: Gleb
  full_name: Polevoy, Gleb
  id: '83983'
  last_name: Polevoy
citation:
  ama: Cohen R, Nudelman I, Polevoy G. On the Admission of Dependent Flows in Powerful
    Sensor Networks. <i>Networking, IEEE/ACM Transactions on</i>. 2013;21(5):1461-1471.
    doi:<a href="https://doi.org/10.1109/TNET.2012.2227792">10.1109/TNET.2012.2227792</a>
  apa: Cohen, R., Nudelman, I., &#38; Polevoy, G. (2013). On the Admission of Dependent
    Flows in Powerful Sensor Networks. <i>Networking, IEEE/ACM Transactions On</i>,
    <i>21</i>(5), 1461–1471. <a href="https://doi.org/10.1109/TNET.2012.2227792">https://doi.org/10.1109/TNET.2012.2227792</a>
  bibtex: '@article{Cohen_Nudelman_Polevoy_2013, title={On the Admission of Dependent
    Flows in Powerful Sensor Networks}, volume={21}, DOI={<a href="https://doi.org/10.1109/TNET.2012.2227792">10.1109/TNET.2012.2227792</a>},
    number={5}, journal={Networking, IEEE/ACM Transactions on}, author={Cohen, R.
    and Nudelman, I. and Polevoy, Gleb}, year={2013}, pages={1461–1471} }'
  chicago: 'Cohen, R., I. Nudelman, and Gleb Polevoy. “On the Admission of Dependent
    Flows in Powerful Sensor Networks.” <i>Networking, IEEE/ACM Transactions On</i>
    21, no. 5 (2013): 1461–71. <a href="https://doi.org/10.1109/TNET.2012.2227792">https://doi.org/10.1109/TNET.2012.2227792</a>.'
  ieee: R. Cohen, I. Nudelman, and G. Polevoy, “On the Admission of Dependent Flows
    in Powerful Sensor Networks,” <i>Networking, IEEE/ACM Transactions on</i>, vol.
    21, no. 5, pp. 1461–1471, 2013.
  mla: Cohen, R., et al. “On the Admission of Dependent Flows in Powerful Sensor Networks.”
    <i>Networking, IEEE/ACM Transactions On</i>, vol. 21, no. 5, 2013, pp. 1461–71,
    doi:<a href="https://doi.org/10.1109/TNET.2012.2227792">10.1109/TNET.2012.2227792</a>.
  short: R. Cohen, I. Nudelman, G. Polevoy, Networking, IEEE/ACM Transactions On 21
    (2013) 1461–1471.
date_created: 2020-08-06T15:22:05Z
date_updated: 2022-01-06T06:53:16Z
department:
- _id: '63'
- _id: '541'
doi: 10.1109/TNET.2012.2227792
extern: '1'
intvolume: '        21'
issue: '5'
keyword:
- Approximation algorithms
- Approximation methods
- Bandwidth
- Logic gates
- Radar
- Vectors
- Wireless sensor networks
- Dependent flow scheduling
- sensor networks
language:
- iso: eng
page: 1461-1471
publication: Networking, IEEE/ACM Transactions on
publication_identifier:
  issn:
  - 1063-6692
status: public
title: On the Admission of Dependent Flows in Powerful Sensor Networks
type: journal_article
user_id: '83983'
volume: 21
year: '2013'
...
---
_id: '9795'
abstract:
- lang: eng
  text: Power and bandwidth of piezoelectric harvesters can be increased by using
    multiple piezoelectric elements in one harvester. In this contribution, a novel
    energy harvesting cantilever array with magnetic tuning including three piezoelectric
    bimorphs is investigated theoretically and experimentally, with a good agreement
    between model and experiment. Other than harvester designs proposed before, this
    array is easy to manufacture and insensitive to manufacturing tolerances because
    its optimum operation frequency can be re-adjusted after fabrication. Using the
    superposition principle, the Butterworth-Van Dyke model and a mechanical lumped
    parameters model, the generated voltage and current are determined analytically.
    Formulas for calculating the power generated by array harvesters with an arbitrary
    number of piezoelectric elements connected in series or in parallel are derived.
    It is shown that optimum harvester design must take both the connected load and
    the operating frequency into account. Strategies for connecting multiple bimorphs
    to increase the maximum generated power and/or enhance the bandwidth compared
    to a single bimorph harvester are investigated. For bandwidth enhancement it is
    essential that individual rectifiers are used for the bimorphs. An example with
    three bimorphs shows that, depending on the chosen tuning strategy, the power
    is increased by about 340\% or the bandwidth is increased by about 500\%, compared
    to one single bimorph.
author:
- first_name: Waleed
  full_name: Al-Ashtari, Waleed
  last_name: Al-Ashtari
- first_name: Matthias
  full_name: Hunstig, Matthias
  last_name: Hunstig
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Enhanced energy harvesting using
    multiple piezoelectric elements: Theory and experiments. <i>Sensors and Actuators
    A: Physical</i>. 2013;200:138-146. doi:<a href="https://doi.org/10.1016/j.sna.2013.01.008">10.1016/j.sna.2013.01.008</a>'
  apa: 'Al-Ashtari, W., Hunstig, M., Hemsel, T., &#38; Sextro, W. (2013). Enhanced
    energy harvesting using multiple piezoelectric elements: Theory and experiments.
    <i>Sensors and Actuators A: Physical</i>, <i>200</i>, 138–146. <a href="https://doi.org/10.1016/j.sna.2013.01.008">https://doi.org/10.1016/j.sna.2013.01.008</a>'
  bibtex: '@article{Al-Ashtari_Hunstig_Hemsel_Sextro_2013, title={Enhanced energy
    harvesting using multiple piezoelectric elements: Theory and experiments}, volume={200},
    DOI={<a href="https://doi.org/10.1016/j.sna.2013.01.008">10.1016/j.sna.2013.01.008</a>},
    journal={Sensors and Actuators A: Physical}, author={Al-Ashtari, Waleed and Hunstig,
    Matthias and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={138–146}
    }'
  chicago: 'Al-Ashtari, Waleed, Matthias Hunstig, Tobias Hemsel, and Walter Sextro.
    “Enhanced Energy Harvesting Using Multiple Piezoelectric Elements: Theory and
    Experiments.” <i>Sensors and Actuators A: Physical</i> 200 (2013): 138–46. <a
    href="https://doi.org/10.1016/j.sna.2013.01.008">https://doi.org/10.1016/j.sna.2013.01.008</a>.'
  ieee: 'W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Enhanced energy harvesting
    using multiple piezoelectric elements: Theory and experiments,” <i>Sensors and
    Actuators A: Physical</i>, vol. 200, pp. 138–146, 2013.'
  mla: 'Al-Ashtari, Waleed, et al. “Enhanced Energy Harvesting Using Multiple Piezoelectric
    Elements: Theory and Experiments.” <i>Sensors and Actuators A: Physical</i>, vol.
    200, 2013, pp. 138–46, doi:<a href="https://doi.org/10.1016/j.sna.2013.01.008">10.1016/j.sna.2013.01.008</a>.'
  short: 'W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A:
    Physical 200 (2013) 138–146.'
date_created: 2019-05-13T13:51:59Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1016/j.sna.2013.01.008
intvolume: '       200'
keyword:
- Energy harvesting
- Cantilever array
- Bandwidth
- Power increase
language:
- iso: eng
page: 138 - 146
publication: 'Sensors and Actuators A: Physical'
status: public
title: 'Enhanced energy harvesting using multiple piezoelectric elements: Theory and
  experiments'
type: journal_article
user_id: '55222'
volume: 200
year: '2013'
...