Terahertz Waveform Synthesis and Analysis Using Hybrid Photonic-Electronic Circuits

Publications

Conference proceedings (39)

3D-Printed Optical Elements for Coupling of VCSEL and Photodiode Arrays to Multi-Core Fibers in an SFP Transceiver Assembly

Author(s): Pascal Maier, Yilin Xu, Matthias Lauermann, Alexandra Henniger-Ludwig, Hermann Kapim, Mareike Trappen, Torben Kind, Achim Weber, Matthias Blaicher, Philipp-Immanuel Dietrich, Clemens Wurster, Sebastian Randel, Wolfgang Freude, and Christian Koos
Published in: Optical Fiber Communication Conference (OFC) 2022, San Diego, CA, USA, 2022, Page(s) Art.-Nr.: W2A.1, ISBN 978-1-55752-466-9
Publisher: Optica Publishing Group (OSA)
DOI: 10.1364/ofc.2022.w2a.1

Photonic-Electronic Ultra-Broadband Signal Processing: Concepts, Devices, and Applications

Author(s): Koos, C.; Randel, S.; Freude, W.; Zwick, T.; Scheytt, J.C.; Witzens, J.; Walther, M.; Harter, T.; Ummethala, S.; Kieninger, C.; Zwickel, H.; Marin-Palomo, P.; Muehlbrandt, S.; Füllner, C.; Schaefer, S.; Gudyriev, S.; Zazzi, A.; Müller, J.; Tessmann, A.
Published in: 2020 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS’20), November 16-19, 2020, 2020, Page(s) paper 4a.1
Publisher: IEEE
DOI: 10.5445/ir/1000129764

InP/Silicon Hybrid External-Cavity Lasers (ECL) Using Photonic Wirebonds as Coupling Elements

Author(s): Yilin Xu, Pascal Maier, Matthias Blaicher, Philipp-Immanuel Dietrich, Pablo Marin-Palomo, Wladislaw Hartmann, Muhammad Rodlin Billah, Ute Troppenz, Martin Möhrle, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optical Fiber Communication Conference (OFC) 2020, 2020, Page(s) M4H.6, ISBN 978-1-943580-71-2
Publisher: OSA
DOI: 10.1364/ofc.2020.m4h.6

Slice-Less Optical Arbitrary Waveform Measurement (OAWM) in a Bandwidth of More Than 600 GHz

Author(s): Daniel Drayss, Dengyang Fang, Christoph Füllner, Grigorii Likhachev, Thomas Henauer, Yung Chen, Huanfa Peng, Pablo Marin-Palomo, Thomas Zwick, Wolfgang Freude, Tobias J. Kippenberg, Sebastian Randel, and Christian Koos
Published in: Optical FibOptical Fiber Communication Conference (OFC) 2022, S. Matsuo, D. Plant, J. Shan Wey, C. Fludger, R. Ryf, and D. Simeonidou, eds., Technical Digest Series (Optica Publishing Group, 2022), 2022, Page(s) paper M2I.1., ISBN 978-1-55752-466-9
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1364/ofc.2022.m2i.1

320 GHz Analog-to-Digital Converter Exploiting Kerr Soliton Combs and Photonic-Electronic Spectral Stitching

Author(s): Fang, D.; Drayss, D.; Lihachev, G.; Marin-Palomo, P.; Peng, H.; Fullner, C.; Kuzmin, A.; Liu, J.; Wang, R.; Snigirev, V.; Lukashchuk, A.; Zhang, M.; Kharel, P.; Witzens, J.; Scheytt, C.; Freude, W.; Randel, S.; Kippenberg, T. J.; Koos, C.
Published in: 2021 European Conference on Optical Communication (ECOC), 2021, Page(s) pp. 1-4, ISBN 978-1-6654-3868-1
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/ecoc52684.2021.9606090

Horizontal-Slot Plasmonic-Organic Hybrid (POH) Modulator

Author(s): Sandeep Ummethala, Venkata Anirudh Pammi, Ahsan H. M. Uddin, Lothar Hahn, Wolfgang Freude, Christian Koos
Published in: Conference on Lasers and Electro-Optics, 2020, Page(s) SM2J.4, ISBN 978-1-943580-76-7
Publisher: OSA
DOI: 10.1364/cleo_si.2020.sm2j.4

200 GBd 16QAM Signals Synthesized by an Actively Phase-Stabilized Optical Arbitrary Waveform Generator (OAWG)

Author(s): Henauer, Thomas; Sherifaj, Alban; Füllner, Christoph; Freude, Wolfgang; Randel, Sebastian; Zwick, Thomas; Koos, Christian
Published in: Optical Fiber Communication Conference (OFC) 2022, San Diego, CA, USA, 2022, Page(s) Art.-Nr.: M2I.2, ISBN 978-1-55752-466-9
Publisher: Optica Publishing Group (OSA)
DOI: 10.1364/ofc.2022.m2i.2

AFM engine with optical actuation and readout printed on the facet of a multi-core fiber

Author(s): Mareike Trappen, Philipp-Immanuel Dietrich, Pascal Burger, Matthias Blaicher, Gerald Goring, Thomas Schimmel, Wolfgang Freude, Hendrik Holscher, Christian Koos
Published in: Conference on Lasers and Electro-Optics, 2020, Page(s) SM2N.7, ISBN 978-1-943580-76-7
Publisher: OSA
DOI: 10.1364/cleo_si.2020.sm2n.7

Ultra-Broadband Electrical Signal Generation and IM/DD Transmission of QAM Signals at Symbol Rates Up to 90 GBd

Author(s): C. Füllner; D. Fang; P. Matalla; W. Freude; C. Koos; S. Randel
Published in: European Conference on Optical Communication (ECOC 2021), Bordeaux, France, 2021, Page(s) 1-4, ISBN 978-1-66543-868-1
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/ecoc52684.2021.9605833

Mode-locked laser timing jitter limitation in optically enabled, spectrally sliced ADCs

Author(s): Zazzi, A.; Fang, Dengyang; Müller, J.; Scheytt, J. C.; Gudyriev, S.; Koos, Christian; Marin-Palomo, Pablo; Witzens, J.
Published in: 21th ITG-Symposium on Photonic Networks (2020), Online, 2020, Page(s) 114-118, ISBN 978-3-8007-5423-6
Publisher: VDE Verlag
DOI: 10.5445/ir/1000130375

Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform

Author(s): Fang, D.; Zazzi, A.; Mueller, J.; Drayss, D.; Fuellner, C.; Marin-Palomo, P.; Mashayekh, A. T.; Das, A. D.; Weizel, M.; Gudyriev, S.; Freude, W.; Randel, S.; Scheytt, J. C.; Witzens, J.; Koos, C.
Published in: Optical Fiber Communication Conference (OFC'21), San Diego (CA), USA, June 6 – 11, 2021, June 6-11, 2021, 2021, Page(s) F2E.G
Publisher: The Optical Society of America (OSA)

SOH Mach-Zehnder Modulators for 100 GBd PAM4 Signaling With Sub-1 dB Phase-Shifter Loss

Author(s): Kieninger, C.; Fuellner, C.; Zwickel, H.; Kutuvantavida, Y.; Kemal, J. N.; Eschenbaum, C.; Freude, W.; Randel, S.; Koos, C.
Published in: Optical Fiber Communication Conference (OFC'20), San Diego (CA), USA, 8.03.–12.03.2020, 2020, Page(s) paper Th3C.3
Publisher: OFC
DOI: 10.5445/ir/1000083036

Opto-Electronic Terahertz Transceivers for Wireless 5G Backhaul

Author(s): Randel, S.; Harter, T.; Fuellner, C.; Ummethala, S.; Koos, C.; Freude, W.
Published in: Optical Fiber Communication Conference (OFC’20), San Diego (CA), USA, March 08–12, 2020, 2020, Page(s) paper M4I.6
Publisher: OSA

Mode-locked laser timing jitter limitation in optically enabled, spectrally sliced ADCs

Author(s): Zazzi, Andrea; Müller, Juliana; Gudyriev, Sergiy; Marin-Palomo, Pablo; Fang, Dengyang; Scheytt, J. Christoph; Koos, Christian; Witzens, Jeremy
Published in: Photonic Networks, 21th ITG-Symposium on Photonic Networks, ITG Fachbericht 294, 2020, Page(s) 114-118, ISBN 978-3-8007-5423-6
Publisher: VDE Verlag

160-GBd Photonic-Electronic PAM Transmitter Based on IQ Multiplexing

Author(s): Fullner, Christoph; Sherifaj, Alban; Henauer, Thomas; Fang, Dengyang; Drayss, Daniel; Freude, Wolfgang; Koos, Christian; Randel, Sebastian
Published in: 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), Toyama, Japan, 2022, ISBN 978-4-88552-336-6
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.23919/oecc/psc53152.2022.9850186

3D-Printed Optics for Wafer-Scale Probing

Author(s): Mareike Trappen, Matthias Blaicher, Philipp-Immanuel Dietrich, Tobias Hoose, Yilin Xu, Muhammad Rodlin Billah, Wolfgang Freude, Christian Koos
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) 1-3, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535123

Hardwired Configurable Photonic Integrated Circuits Enabled by 3D Nanoprinting

Author(s): T. Hoose, M. Blaicher, J. N. Kemal, H. Zwickel, M. R. Billah, P.-I. Dietrich, A. Hofmann, W. Freude, S. Randel, C. Koos
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) 1-3, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535258

Wireless Transmission at 0.3 THz Using Direct THz-to-Optical Conversion at the Receiver

Author(s): S. Ummethala, T. Harter, K. Koehnle, Z. Li, S. Muehlbrandt, Y. Kutuvantavida, J. N. Kemal, J. Schaefer, H. Massler, A. Tessmann, S. K. Garlapati, A. Bacher, L. Hahn, M. Walther, T. Zwick, S. Randel, W. Freude, C. Koos
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) 1-3, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535490

110-m THz Wireless Transmission at 100 Gbit/s Using a Kramers-Kronig Schottky Barrier Diode Receiver

Author(s): Tobias Harter, Christoph Fullner, Juned N. Kemal, Sandeep Ummethala, Miriam Brosi, Erik Brundermann, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) 1-3, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535174

Photonic Wire Bonding and 3D Nanoprinting in Photonic Integration – from Lab Demonstrations to Production

Author(s): C. Koos, W. Freude, S. Randel, M. R. Billah, M. Blaicher, P.-I. Dietrich, T. Hoose, Y. Xu, J. N. Kemal, A. Nesic, A. Hofmann
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) 1-2, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535426

Efficient Coupling Interfaces in Photonic Systems Enabled by Printed Freeform Micro-Optics

Author(s): C. Koos, W. Freude, S. Randel, P.-I. Dietrich, M. Blaicher, Y. Xu, M. R. Billah, T. Hoose, M. Trappen, A. Hofmann
Published in: 2018 20th International Conference on Transparent Optical Networks (ICTON), 2018, Page(s) 1-2, ISBN 978-1-5386-6605-0
Publisher: IEEE
DOI: 10.1109/icton.2018.8473851

Silicon Photonics for Coherent Terahertz Generation and Detection

Author(s): W. Freude, T. Harter, S. Muehlbrandt, S. Ummethala, S. Nellen, L. Hahn, S. Randel, C. Koos
Published in: 2019 21st International Conference on Transparent Optical Networks (ICTON), 2019, Page(s) 1-4, ISBN 978-1-7281-2779-8
Publisher: IEEE
DOI: 10.1109/icton.2019.8840408

Generalized Kramers-Kronig Receiver for 16QAM Wireless THZ Transmission AT 110 Gbit/s

Author(s): T. Harter, C. Füllner, J.N. Kemal, S. Ummethala, J.L. Steinmann, M. Brosi, J.L. Hesler, E. Bründermann, W. Freude, S. Randel, C. Koos
Published in: 45th European Conference on Optical Communication (ECOC 2019), 2019, Page(s) 266 (4 pp.)-266 (4 pp.), ISBN 978-1-83953-185-9
Publisher: Institution of Engineering and Technology
DOI: 10.1049/cp.2019.1000

Wireless terahertz communications using optoelectronic techniques

Author(s): Harter, T.; Ummethala, S.; Muehlbrandt, S.; Blaicher, M.; Koehnle, K.; Adib, M. M. H.; Weber, M.; Wolf, S.; Kutuvantavida, Y.; Kemal, J. N.; Nellen, S.; Hahn, L.; Tessmann, A.; Walther, M.; Zwick, T.; Randel, S.; Freude, W.; Koos, C.
Published in: Progress in Electromagnetics Research Symposium 2018 (PIERS 2018), Toyama, Japan, August 1-4, 2018, 2018, Page(s) SC3 & SC4
Publisher: IEEE
DOI: 10.5445/ir/1000105507

Hybrid Photonic Integration and Plasmonic Devices: New Perspectives for High-Speed Communications and Ultra-Fast Signal Processing

Author(s): C. Koos, S. Randel, W. Freude, L. R. Dalton, S. Wolf, C. Kieninger, Y. Kutuvantavida, M. Lauermann, D. L. Elder, S. Muehlbrandt, H. Zwickel, A. Melikyan, T. Harter, S. Ummethala, M. R. Billah, M. Blaicher, P.-I. Dietrich, T. Hoose
Published in: CLEO Pacific Rim Conference, 2018, Page(s) W4J.1, ISBN 978-1-943580-45-3
Publisher: OSA
DOI: 10.1364/cleopr.2018.w4j.1

3D-Printed Ultra-Broadband Highly Efficient Out-of-Plane Coupler for Photonic Integrated Circuits

Author(s): Matthias Blaicher, Muhammad Rodlin Billah, Tobias Hoose, Philipp-Immanuel Dietrich, Andreas Hofmann, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Conference on Lasers and Electro-Optics, 2018, Page(s) STh1A.1, ISBN 978-1-943580-42-2
Publisher: OSA
DOI: 10.1364/cleo_si.2018.sth1a.1

Terahertz-to-Optical Conversion Using a Plasmonic Modulator

Author(s): S. Ummethala, T. Harter, K. Köhnle, S. Muehlbrandt, Y. Kutuvantavida, J. N. Kemal, J. Schaefer, H. Massler, A. Tessmann, S. K. Garlapati, A. Bacher, L. Hahn, M. Walther, T. Zwick, S. Randel, W. Freude, C. Koos
Published in: Conference on Lasers and Electro-Optics, 2018, Page(s) STu3D.4, ISBN 978-1-943580-42-2
Publisher: OSA
DOI: 10.1364/cleo_si.2018.stu3d.4

Demonstration of Long-Term Thermal Stability of a Silicon-Organic Hybrid (SOH) Modulator at 85°C

Author(s): C. Kieninger, Y. Kutuvantavida, J. N. Kemal, H. Zwickel, H. Miura, S. Randel, W. Freude, S. Yokoyama, C. Koos
Published in: Conference on Lasers and Electro-Optics, 2018, Page(s) SM3B.3, ISBN 978-1-943580-42-2
Publisher: OSA
DOI: 10.1364/cleo_si.2018.sm3b.3

Electrically Packaged Silicon-Organic Hybrid Modulator for Communication and Microwave Photonic Applications

Author(s): H. Zwickel, J. N. Kemal, C. Kieninger, Y. Kutuvantavida, M. Lauermann, J. Rittershofer, R. Pajković, D. Lindt, S. Randel, W. Freude, C. Koos
Published in: Conference on Lasers and Electro-Optics, 2018, Page(s) SM3B.1, ISBN 978-1-943580-42-2
Publisher: OSA
DOI: 10.1364/cleo_si.2018.sm3b.1

Wireless THz-to-optical conversion with an electro-optic plasmonic modulator

Author(s): Freude, W.; Ummethala, S.; Harter, T.; Koehnle, K.; Li, Z.; Muehlbrandt, S.; Kutuvantavida, Y.; Kemal, J. N.; Marin-Palomo, P.; Schaefer, J.; Tessmann, A.; Kumar Garlapati, S.; Bacher, A.; Hahn, L.; Walther, M.; Zwick, T.; Randel, S.; Koos, C.
Published in: Light: Science & Applications, Light Conference (Light Conference'19), Changchun, China, July 16-18, 2019
Publisher: Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP)

Wireless Terahertz Communications

Author(s): W. Freude, A. Tessmann, Y. Kutuvantavida, J. N. Kemal, S. Nellen, L. Hahn, B. Globisch, M. Walther, T. Zwick, S. Randel, C. Koos, T. Harter, S. Ummethala, S. Muehlbrandt, M. Blaicher, S. Wolf, M. Weber, F. Boes, H. Massler
Published in: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2019, Page(s) 1-1, ISBN 978-1-7281-0469-0
Publisher: IEEE
DOI: 10.1109/cleoe-eqec.2019.8873098

50GBit/s PAM-4 Driver Circuit Based on Variable Gain Distributed Power Combiner

Author(s): Christian v. Vangerow, Christian Bohn, Heiner Zwickel, Christian Koos, Thomas Zwick
Published in: 2019 IEEE 19th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2019, Page(s) 1-3, ISBN 978-1-5386-5950-2
Publisher: IEEE
DOI: 10.1109/sirf.2019.8709086

Silicon Photonics, Hybrid Integration, and Frequency Combs: Technologies for High-bandwith Communications - Tutorial

Author(s): Koos, C.
Published in: Optical Fiber Communication Conference (OFC'19), San Diego (CA), USA, 03.–07.03.2019, 2019, Page(s) W3E.1
Publisher: OSA
DOI: 10.5445/ir/1000129769

High-speed optical devices and multiplexing techniques

Author(s): Koos, C.
Published in: Workshop “Super DACs and ADCs - To Interleave or not to Interleave” Optical Fiber Communication Conference (OFC'19), San Diego (CA), USA, March 3–7, 2019
Publisher: OSA

Silicon Photonics, Hybrid Integration, and Frequency Combs: Technologies for High-bandwith Communications

Author(s): Koos, C.
Published in: Optical Fiber Communication Conference (OFC'19), San Diego (CA), USA, March 3–7, 2019, Page(s) tutorial D1
Publisher: OSA

Photonic Wire Bonding and 3D Nano-Printing in Photonics: From Lab Demonstrations to Production

Author(s): Koos, C.
Published in: 9th International Symposium on Ultrafast Photonic Technologies (ISUPT 2019); Napa, California, June 17-19, 2019
Publisher: UC Davis: Unversity of California

Capacitively Coupled Silicon-Organic Hybrid Modulator for 200 Gbit/s PAM-4 Signaling

Author(s): S. Ummethala, J. N. Kemal, M. Lauermann, A. S. Alam, H. Zwickel, T. Harter, Y. Kutuvantavida, L. Hahn, S. H. Nandam, D. L. Elder, L. R. Dalton, W. Freude, S. Randel, C. Koos
Published in: Conference on Lasers and Electro-Optics, 2019, Page(s) JTh5B.2, ISBN 978-1-943580-57-6
Publisher: OSA
DOI: 10.1364/cleo_at.2019.jth5b.2

110-m THz Wireless Transmission at 100 Gbit/s Using a Kramers-Kronig Schottky Barrier Diode Receiver

Author(s): Tobias Harter, Christoph Fullner, Juned N. Kemal, Sandeep Ummethala, Miriam Brosi, Erik Brundermann, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: 2018 European Conference on Optical Communication (ECOC), September 23-27, 2018, 2018, Page(s) 1-3, ISBN 978-1-5386-4862-9
Publisher: IEEE
DOI: 10.1109/ecoc.2018.8535174

Hardwire-Configurable Photonic Integrated Circuits Enabled by 3D Nano-Printing

Author(s): Hoose, Tobias; Blaicher, Matthias; Kemal, Juned Nassir; Zwickel, Heiner; Billah, Muhammad Rodlin; Dietrich, Philipp-Immanuel; Hofmann, Andreas; Freude, Wolfgang; Randel, Sebastian; Koos, Christian
Published in: 2018 European Conference on Optical Communication (ECOC), 2018, Page(s) pp. 1-3
Publisher: IEEE
DOI: 10.48550/arxiv.1912.09942

Peer reviewed articles (31)

Biophotonic sensors with integrated Si3N4-organic hybrid (SiNOH) lasers for point-of-care diagnostics

Author(s): Kohler, D.; Schindler, G.; Hahn, L.; Milvich, J.; Hofmann, A.; Länge, K.; Freude, W.; Koos, C.
Published in: Light: Science & Applications, No. 10, Article number 64 (2021), 2021, Page(s) 2095-5545, ISSN 2047-7538
Publisher: Springer Nature
DOI: 10.5445/ir/1000131376

Performance of chip-scale optical frequency comb generators in coherent WDM communications

Author(s): Pablo Marin-Palomo, Juned N. Kemal, Tobias J. Kippenberg, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: Optics Express, 28/9, 2020, Page(s) 12897, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.380413

3D-printed optical probes for wafer-level testing of photonic integrated circuits

Author(s): Mareike Trappen, Matthias Blaicher, Philipp-Immanuel Dietrich, Colin Dankwart, Yilin Xu, Tobias Hoose, Muhammad Rodlin Billah, Amin Abbasi, Roel Baets, Ute Troppenz, Michael Theurer, Kerstin Wörhoff, Moritz Seyfried, Wolfgang Freude, Christian Koos
Published in: Optics Express, 28/25, 2020, Page(s) 37996, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.405139

Verified equivalent-circuit model for slot-waveguide modulators

Author(s): Heiner Zwickel, Stefan Singer, Clemens Kieninger, Yasar Kutuvantavida, Narek Muradyan, Thorsten Wahlbrink, Shiyoshi Yokoyama, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optics Express, 28/9, 2020, Page(s) 12951, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.383120

Lasing in Si 3 N 4 -organic hybrid (SiNOH) waveguides

Author(s): Daria Kohler, Isabel Allegro, Sentayehu Fetene Wondimu, Lothar Hahn, Wolfgang Freude, Christian Koos
Published in: Optics Express, 28/4, 2020, Page(s) 5085, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.381572

Silicon-organic hybrid (SOH) Mach-Zehnder modulators for 100 GBd PAM4 signaling with sub-1 dB phase-shifter loss

Author(s): Clemens Kieninger, Christoph Füllner, Heiner Zwickel, Yasar Kutuvantavida, Juned N. Kemal, Carsten Eschenbaum, Delwin L. Elder, Larry R. Dalton, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: Optics Express, 28/17, 2020, Page(s) 24693, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.390315

Field-effect silicon-plasmonic photodetector for coherent T-wave reception

Author(s): S. Muehlbrandt, T. Harter, C. Füllner, S. Ummethala, S. Wolf, A. Bacher, L. Hahn, M. Kohl, W. Freude, C. Koos
Published in: Optics Express, 29/14, 2021, Page(s) 21586, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.425158

Analysis of Kerr comb generation in silicon microresonators under the influence of two-photon absorption and fast free-carrier dynamics

Author(s): P. Trocha, J. Gärtner, P. Marin-Palomo, W. Freude, W. Reichel, C. Koos
Published in: Physical Review A, 103/6, 2021, Page(s) 063515, ISSN 2469-9926
Publisher: American Physical Society
DOI: 10.1103/physreva.103.063515

Ultra-fast optical ranging using quantum-dash mode-locked laser diodes

Author(s): Trocha, Philipp; Kemal, Juned Nassir; Gaimard, Quentin; Aubin, Guy; Lelarge, François; Ramdane, Abderrahim; Freude, Wolfgang; Randel, Sebastian; Koos, Christian
Published in: Scientific Reports, 12 (1), Art.-Nr.: 1076, 20452322, 2022, Page(s) Art.-Nr.: 1076, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-021-04368-4

Hybrid external-cavity lasers (ECL) using photonic wire bonds as coupling elements

Author(s): Yilin Xu, Pascal Maier, Matthias Blaicher, Philipp-Immanuel Dietrich, Pablo Marin-Palomo, Wladislaw Hartmann, Yiyang Bao, Huanfa Peng, Muhammad Rodlin Billah, Stefan Singer, Ute Troppenz, Martin Moehrle, Sebastian Randel, Wolfgang Freude & Christian Koos
Published in: Scientific reports, 20452322, 2021, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-021-95981-w

Superconducting nanowire single-photon detector with 3D-printed free-form microlenses

Author(s): Yilin Xu, Artem Kuzmin, Emanuel Knehr, Matthias Blaicher, Konstantin Ilin, Philipp-Immanuel Dietrich, Wolfgang Freude, Michael Siegel, and Christian Koos
Published in: Opt. Express 29, 10944087, 2021, Page(s) 27708-27731, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.427639

Multi-wavelength coherent transmission using an optical frequency comb as a local oscillator

Author(s): Juned N. Kemal, Joerg Pfeifle, Pablo Marin-Palomo, M. Deseada Gutierrez Pascual, Stefan Wolf, Frank Smyth, Wolfgang Freude, Christian Koos
Published in: Optics Express, 24/22, 2016, Page(s) 25432, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.24.025432

32QAM WDM transmission at 12 Tbit/s using a quantum-dash mode-locked laser diode (QD-MLLD) with external-cavity feedback

Author(s): Juned N. Kemal, Pablo Marin-Palomo, Kamel Merghem, Guy Aubin, François Lelarge, Abderrahim Ramdane, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optics Express, 28/16, 2020, Page(s) 23594, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.392007

Fundamental limitations of spectrally-sliced optically enabled data converters arising from MLL timing jitter

Author(s): Andrea Zazzi, Juliana Müller, Sergiy Gudyriev, Pablo Marin-Palomo, Dengyang Fang, J. Christoph Scheytt, Christian Koos, Jeremy Witzens
Published in: Optics Express, 28/13, 2020, Page(s) 18790, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.382832

Silicon–plasmonic integrated circuits for terahertz signal generation and coherent detection

Author(s): T. Harter, S. Muehlbrandt, S. Ummethala, A. Schmid, S. Nellen, L. Hahn, W. Freude, C. Koos
Published in: Nature Photonics, 12/10, 2018, Page(s) 625-633, ISSN 1749-4885
Publisher: Nature Pub. Group
DOI: 10.1038/s41566-018-0237-x

Hybrid integration of silicon photonics circuits and InP lasers by photonic wire bonding

Author(s): Muhammad Rodlin Billah, Matthias Blaicher, Tobias Hoose, Philipp-Immanuel Dietrich, Pablo Marin-Palomo, Nicole Lindenmann, Aleksandar Nesic, Andreas Hofmann, Ute Troppenz, Martin Moehrle, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optica, 5/7, 2018, Page(s) 876, ISSN 2334-2536
Publisher: OSA
DOI: 10.1364/optica.5.000876

Demonstration of long-term thermally stable silicon-organic hybrid modulators at 85 °C

Author(s): Clemens Kieninger, Yasar Kutuvantavida, Hiroki Miura, Juned N. Kemal, Heiner Zwickel, Feng Qiu, Matthias Lauermann, Wolfgang Freude, Sebastian Randel, Shiyoshi Yokoyama, Christian Koos
Published in: Optics Express, 26/21, 2018, Page(s) 27955, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.26.027955

3D‐Printed Scanning‐Probe Microscopes with Integrated Optical Actuation and Read‐Out

Author(s): Philipp‐Immanuel Dietrich, Gerald Göring, Mareike Trappen, Matthias Blaicher, Wolfgang Freude, Thomas Schimmel, Hendrik Hölscher, Christian Koos
Published in: Small, 2019, Page(s) 1904695, ISSN 1613-6810
Publisher: Wiley - V C H Verlag GmbbH & Co.
DOI: 10.1002/smll.201904695

Comb-based WDM transmission at 10 Tbit/s using a DC-driven quantum-dash mode-locked laser diode

Author(s): Pablo Marin-Palomo, Juned N. Kemal, Philipp Trocha, Stefan Wolf, Kamel Merghem, François Lelarge, Abderrahim Ramdane, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: Optics Express, 27/22, 2019, Page(s) 31110, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.27.031110

Coherent WDM transmission using quantum-dash mode-locked laser diodes as multi-wavelength source and local oscillator

Author(s): Juned N. Kemal, Pablo Marin-Palomo, Vivek Panapakkam, Philipp Trocha, Stefan Wolf, Kamel Merghem, François Lelarge, Abderrahim Ramdane, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optics Express, 27/22, 2019, Page(s) 31164, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.27.031164

THz-to-optical conversion in wireless communications using an ultra-broadband plasmonic modulator

Author(s): S. Ummethala, T. Harter, K. Koehnle, Z. Li, S. Muehlbrandt, Y. Kutuvantavida, J. Kemal, P. Marin-Palomo, J. Schaefer, A. Tessmann, S. K. Garlapati, A. Bacher, L. Hahn, M. Walther, T. Zwick, S. Randel, W. Freude, C. Koos
Published in: Nature Photonics, 13/8, 2019, Page(s) 519-524, ISSN 1749-4885
Publisher: Nature Pub. Group
DOI: 10.1038/s41566-019-0475-6

Electrically packaged silicon-organic hybrid (SOH) I/Q-modulator for 64 GBd operation

Author(s): Heiner Zwickel, Juned N. Kemal, Clemens Kieninger, Yasar Kutuvantavida, Jonas Rittershofer, Matthias Lauermann, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: Optics Express, 26/26, 2018, Page(s) 34580, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.26.034580

Ultra-high electro-optic activity demonstrated in a silicon-organic hybrid modulator

Author(s): Clemens Kieninger, Yasar Kutuvantavida, Delwin L. Elder, Stefan Wolf, Heiner Zwickel, Matthias Blaicher, Juned N. Kemal, Matthias Lauermann, Sebastian Randel, Wolfgang Freude, Larry R. Dalton, Christian Koos
Published in: Optica, 5/6, 2018, Page(s) 739, ISSN 2334-2536
Publisher: OSA
DOI: 10.1364/optica.5.000739

In situ 3D nanoprinting of free-form coupling elements for hybrid photonic integration

Author(s): P.-I. Dietrich, M. Blaicher, I. Reuter, M. Billah, T. Hoose, A. Hofmann, C. Caer, R. Dangel, B. Offrein, U. Troppenz, M. Moehrle, W. Freude, C. Koos
Published in: Nature Photonics, 12/4, 2018, Page(s) 241-247, ISSN 1749-4885
Publisher: Nature Pub. Group
DOI: 10.1038/s41566-018-0133-4

Wireless THz link with optoelectronic transmitter and receiver

Author(s): Tobias Harter, Sandeep Ummethala, Matthias Blaicher, Sascha Muehlbrandt, Stefan Wolf, Marco Weber, Md Mosaddek Hossain Adib, Juned. N. Kemal, Marco Merboldt, Florian Boes, Simon Nellen, Axel Tessmann, Martin Walther, Björn Globisch, Thomas Zwick, Wolfgang Freude, Sebastian Randel, Christian Koos
Published in: Optica, 6/8, 2019, Page(s) 1063, ISSN 2334-2536
Publisher: OSA
DOI: 10.1364/OPTICA.6.001063

Photonic-integrated circuits with non-planar topologies realized by 3D-printed waveguide overpasses

Author(s): Aleksandar Nesic, Matthias Blaicher, Tobias Hoose, Andreas Hofmann, Matthias Lauermann, Yasar Kutuvantavida, Martin Nöllenburg, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optics Express, 27/12, 2019, Page(s) 17402, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.27.017402

Transformation-optics modeling of 3D-printed freeform waveguides

Author(s): Aleksandar Nesic; Matthias Blaicher; Emilio Orlandini; Tudor Olariu; Maria Paszkiewicz; Fernando Negredo; Pascal Kraft; Mariia Sukhova; Andreas Hofmann; Willy Dörfler; Carsten Rockstuhl; Wolfgang Freude; Christian Koos
Published in: Crossref, 1, 2022, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.48550/arxiv.2201.09807

Hybrid multi-chip assembly of optical communication engines by in situ 3D nano-lithography

Author(s): Matthias Blaicher, Muhammad Rodlin Billah, Juned Kemal, Tobias Hoose, Pablo Marin-Palomo, Andreas Hofmann, Yasar Kutuvantavida, Clemens Kieninger, Philipp-Immanuel Dietrich, Matthias Lauermann, Stefan Wolf, Ute Troppenz, Martin Moehrle, Florian Merget, Sebastian Skacel, Jeremy Witzens, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Light: Science & Applications, 9/1, 2020, Page(s) 71, ISSN 2047-7538
Publisher: Light: Science & Applications
DOI: 10.1038/s41377-020-0272-5

Hybrid electro-optic modulator combining silicon photonic slot waveguides with high-k radio-frequency slotlines

Author(s): Sandeep Ummethala, Juned N. Kemal, Ahmed S. Alam, Matthias Lauermann, Artem Kuzmin, Yasar Kutuvantavida, Sree H. Nandam, Lothar Hahn, Delwin L. Elder, Larry R. Dalton, Thomas Zwick, Sebastian Randel, Wolfgang Freude, Christian Koos
Published in: Optica, 8/4, 2021, Page(s) 511, ISSN 2334-2536
Publisher: OSA
DOI: 10.1364/optica.411161

Generalized Kramers–Kronig receiver for coherent terahertz communications

Author(s): T. Harter, C. Füllner, J. N. Kemal, S. Ummethala, J. L. Steinmann, M. Brosi, J. L. Hesler, E. Bründermann, A.-S. Müller, W. Freude, S. Randel, C. Koos
Published in: Nature Photonics, 14/10, 2020, Page(s) 601-606, ISSN 1749-4885
Publisher: Nature Pub. Group
DOI: 10.1038/s41566-020-0675-0

Surface sensing with integrated optical waveguides: a design guideline

Author(s): Johannes Milvich, Daria Kohler, Wolfgang Freude, Christian Koos
Published in: Optics Express, 26/16, 2018, Page(s) 19885, ISSN 1094-4087
Publisher: Optical Society of America
DOI: 10.1364/oe.26.019885

Other (1)

3D-printed facet-attached optical elements for connecting VCSEL and photodiodes to fiber arrays and multi-core fibers

Author(s): Maier, Pascal; Xu, Yilin; Trappen, Mareike; Lauermann, Matthias; Henniger-Ludwig, Alexandra; Kapim, Hermann
Published in: 2022
Publisher: Karlsuhe Institute of Technology
DOI: 10.5445/ir/1000150245

Thesis dissertations (2)

Plasmonic-Organic and Silicon-Organic Hybrid Modulators for High-Speed Signal Processing

Author(s): Ummethala, Sandeep
Published in: Dissertation, 2021
Publisher: Karlsruher Institut für Technologie (KIT)
DOI: 10.5445/ir/1000136059

Wireless Terahertz Communications: Optoelectronic Devices and Signal Processing

Author(s): Harter, Tobias
Published in: Karlsruhe Series in Photonics and Communications / Karlsruhe Institute of Technology, Institute of Photonics and Quantum Electronics (IPQ), 18651100, 2021, ISSN 1865-1100
Publisher: KIT Scientific Publishing
DOI: 10.5445/ksp/1000128941