Publications 2023

• PIC-Based 1×N Flexible WaveBand-Selective Switch
  M. Marom, C. G. H. Roeloffzen and I. Tomkos
  Publisher: 2023 International Conference on Photonics in Switching and Computing (PSC), Mantova, Italy, 2023, pp. 1-3, 2 November 2023, DOI: 10.1109/PSC57974.2023.10297160.
• SiP based Hybrid Digital and Analog RoF mmWave 5G Transmission for Converged Optical Access Networks
  Dass, L. N. Venkatasubramani, L. Barry, C. Roeloffzen and C. Browning
  Publisher: 2023 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, 2023, pp. 1-2. 27 September 2023, DOI: 10.1364/CLEO_SI.2023.SF2M.3
• Design, Fabrication, and Characterization of a Hybrid Integrated Photonic Module for a Synthetic Aperture Radar Receiver
  A.W. Mohammad, CG Roeloffzen, PW van Dijk, L Wevers, P Ghelfi, M Reza
  Publisher: Journal of Lightwave Technology 2023, 22 September 2023, DOI: 10.1109/JLT.2023.3318473
• Integrated Microwave Photonics: A Chip Platform by Hybrid Integration of InP and SiN TriPleX
  Chris Roeloffzen, Peter Maat, Ilka Visscher, Marcel Hoekman, Lennart Wevers, Edwin Klein, Paul van Dijk, Roelof Bernardus Timens, Robert Grootjans, Furkan Şahin, Rick Heuvink, Ronald Dekker
  Publisher: 23rd International Conference on Transparent Optical Networks (ICTON) 2023, 8 August 2023, 1-4, DOI: 10.1109/ICTON59386.2023.10207429
• Microwave Photonic filter with reconfigurable bandwidth and tunable central frequency aimed for flexible satellite payloads in Ka-, Q-,-V band
  C Mitsolidou, RB Timens, V Sánchez-Martínez, A Zarzuelo, G Carpintero
  Publisher: International Conference on Space Optics—ICSO 2022, 12 July 2023, DOI: 10.1117/12.2690897
• High stability LO generation by injection-locking of hybrid integrated dual InP-Si3N4 laser source for satellite payloads in Ka-, Q-, V-band
  A Zarzuelo, J Cesar, R Guzmán, L Gonzalez, C Mitsolidou, RB Timens
  Publisher:  International Conference on Space Optics—ICSO 2022, 12 July 2023, DOI: 10.1117/12.2690896
• Low Noise Ultra-Flexible SiP Switching Platform for mmWave OCDM & Multi-Band OFDM ARoF Fronthaul
  Devika Dass, Liang Yuan Dai, Keren Bergman, Xing Ouyang, Paul Townsend, Chris Roeloffzen, and Colm Browning
  Publisher: IEEE Photonics Technology Letters, vol. 35, no. 12, pp. 653-656, 15 June 2023, DOI: 10.1109/LPT.2023.3269901.
• Bandwidth Re-Configurable Wideband QAM-OFDM With Hybrid Integrated InP-Si3N4Tunable Laser Source for Short-Reach Systems
  N. Venkatasubramani, D. Dass, C. Browning, C. G. Roeloffzen, D. Geuzebroek and L. Barry
  Publisher: Journal of Lightwave Technology, vol. 41, no. 11, pp. 3612-3619, 23 March 2023, DOI: 10.1109/JLT.2023.3261140.
• Silicon nitride hybrid-integrated diode laser at 637 nm
  Lisa V. Winkler, Kirsten Gerritsma, Albert van Rees, Philip P. J. Schrinner, Marcel Hoekman, Ronald Dekker, Peter J. M. van der Slot, Christian Nölleke, Klaus-J. Boller
  Publisher: Proceedings Volume 12424, Integrated Optics: Devices, Materials, and Technologies XXVII; ; SPIE , 124241K, 17 March 2023; DOI: 10.1117/12.2667809
• 139 nm tuning range, high speed wavelength modulation, and high output power up to 60 mW from a single gain, two-ring vernier external cavity laser
  Wilson Tsong, Ian van den Vlekkert, Sami Musa, Raimond N. Frentrop, Noor A. Schilder, Marcel Hoekman, Arjan Meijerink, Edwin J. Klein, and Dimitri Geskus
  Publisher: Proceedings Volume 12424, Integrated Optics: Devices, Materials, and Technologies XXVII; 124240G (17 March 2023) DOI: 10.1117/12.2650624
• 800 nm narrow linewidth tunable hybrid laser based on a dual micro-ring external cavity
  Raimond Frentrop, Noor A. Schilder, I. Hegeman, Arnoud S. Everhardt, Edwin J. Klein, Douwe H. Geuzebroek, Lisa V. Winkler, Jason Ensher, René G. Heideman,and Carl Kelly
  Publisher: Proceedings Volume 12440, Novel In-Plane Semiconductor Lasers XXII, SPIE OPTO 12440, (15 March 2023); DOI: 10.1117/12.2649902
• Incoherent Optical Beamformer for ARoF Fronthaul in Mm-Wave 5 G/6 G Networks
  Javier Pérez Santacruz, Simon Rommel, Chris G. H. Roeloffzen, Roelof Bernardus Timens, Paul W. L. van Dijk, Antonio Jurado-Navas, Idelfonso Tafur Monroy
  Publisher: Journal of Lightwave Technology, vol. 41, no. 5, pp. 1325-1334, 1 March 2023, DOI: 10.1109/JLT.2022.3221861
• Reconfigurable photonic integrated transmitter for metro-access networks
  Aleksandra Kaszubowska-Anandarajah, Syed Tajammul Ahmad, Chris G. H. Roeloffzen, Paulus W. L. van Dijk, Ankit Sharma, Manas Srivastava, Prajwal D. Lakshmijayasimha, M. Deseada Gutierrez Pascual, Frank Smyth, Jules Braddell, Prince M. Anandarajah
  Publisher: Journal of Optical Communications and Networking, vol. 15, no. 3, pp. A92–A102, Mar. 2023, DOI: 10.1364/JOCN.470113
• End-to-End Real-Time Service Provisioning Over a SDN-Controllable Analog mmWave Fiber -Wireless 5G X-Haul Network
  Christos Vagionas, Ronis Maximidis, Ioannis Stratakos, Aristotelis Margaris, Agapi Mesodiakaki, Marios Gatzianas, Konstantina Kanta, Panagiotis Toumasis, Giannis Giannoulis, Dimitrios Apostolopoulos, Elissaios Alexios Papatheofanous, George Lentaris, Dionysios Reisis, Dimitrios Soudris, Kostas Tsagkaris, Nikolaos Argyris, Dimitris Syrivelis, Paraskevas Bakopoulos, Ruud M. Oldenbeuving, Chris G. H. Roeloffzen, Paul W. L. van Dijk, I. Dimogiannis, A. Kontogiannis, Hercules Avramopoulos, Amalia Miliou, Nikos Pleros, George Kalfas
  Publisher: Journal of Lightwave Technology, vol. 41, no. 4, pp. 1104–1113, Feb. 2023, DOI: 10.1109/JLT.2023.3234365

Publications 2022

• Ultrahigh dynamic range and low noise figure programmable integrated microwave photonic filter
  Okky Daulay, Gaojian Liu, Kaixuan Ye, Roel Botter, Yvan Klaver, Qinggui Tan, Hongxi Yu, Marcel Hoekman, Edwin Klein, Chris Roeloffzen, Yang  Liu, David Marpaung.
  Publisher: Nature Communications, vol. 13, no. 1, Art. no. 1, Dec. 2022, DOI: 10.1038/s41467-022-35485-x
• Photonic Integrated Circuit for Optical Phase Control of 1 × 4 Terahertz Phased Arrays
  Peng Lu, Thomas Haddad, Jonas Tebart, Chris Roeloffzen, Andreas Stöhr.
  Publisher: Photonics, vol. 9, no. 12, Art. no. 12, Dec. 2022, DOI: 10.3390/photonics9120902
• Incoherent Optical Beamformer for ARoF Fronthaul in Mm-Wave 5 G/6 G Networks
  Javier Pérez Santacruz, Simon Rommel, Chris G. H. Roeloffzen, Roelof Bernardus Timens, Paul W. L. van Dijk, Antonio Jurado-Navas, Idelfonso Tafur Monroy
  Publisher: Journal of Lightwave Technology, 2022, DOI: 10.1109/JLT.2022.3221861
• Reconfigurable Fiber Wireless Fronthaul With A-RoF and D-RoF Co-Existence Through a Si3N4 ROADM for Heterogeneous Mmwave 5G C-RANs
  Eugenio Ruggeri, Christos Vagionas, Ronis Maximidis, George Kalfas, Dimosthenis Spasopoulos, Nikos Terzenidis, Ruud M. Oldenbeuving, Paul W. L. van Dijk, Chris G. H. Roeloffzen, Nikos Pleros, Amalia Miliou
  Publisher: Journal of Lightwave Technology, vol. 40, no. 16, pp. 5514-5521, 2 June 2022, DOI: 10.1109/JLT.2022.3179636
• Injection Locking Properties of an InP-Si3N4 Dual Laser Source for Mm-wave Communications
  Luis Gonzalez-Guerrero, Robinson Guzman, Muhsin Ali, Alberto Zarzuelo, Jessica Cesar, Devika Dass, Colm Browning, Liam P. Barry, Ilka Visscher, Robert Grootjans, Chris G. H. Roeloffzen, Guillermo Carpintero
  Publisher: Journal of Lightwave Technology, vol. 40, no. 20, pp. 6685-6692, 15 Oct.15, 2022, DOI: 10.1109/JLT.2022.3171080
• Wavelength & mm-Wave Flexible Converged Optical Fronthaul With a Low Noise Si-Based Integrated Dual Laser Source
  Devika Dass, Amol Delmade, Liam Barry, Chris. G. H. Roeloffzen, Douwe Geuzebroek and Colm Browning
  Publisher: Journal of Lightwave Technology, vol. 40, no. 10, pp. 3307-3315, 15 May 2022, DOI: 10.1109/JLT.2022.3169446
• InP-Si₃N₄ Hybrid Integrated Optical Source for High-purity Mm-wave Communications
  Luis Gonzalez-Guerrero, Robinson Guzman, Muhsin Ali, Jessica Cesar Cuello, Devika Dass, Colm Browning, Liam Barry, Ilka Visscher, Robert Grootjans, Chris G. H. Roeloffzen, Guillermo Carpintero
  Publisher: Optical 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), paper W3D.7., DOI: 10.1364/OFC.2022.W3D.7
• Ultra-low power stress-based phase actuation in TriPleX photonic circuits
  Arnoud S. Everhardt, T. Lan Anh Tran, Charoula Mitsolidou, Tom R. Horner, Robert Grootjans, Ruud Oldenbeuving, Rick Heuvink, Douwe Geuzebroek, Arne Leinse, Chris Roeloffzen, René G. Heideman
  Publisher: Proc. SPIE 12004, Integrated Optics: Devices, Materials, and Technologies XXVI, 1200405, 5 March, 2022, DOI: https://doi.org/10.1117/12.2609405

Publications 2021

• Widely Tunable RF Signal Generation Using an InP/Si₃N₄ Hybrid Integrated Dual-Wavelength Optical Heterodyne Source
  Robinson Guzmán, Luis González, Alberto Zarzuelo, Jessica Cesar Cuello, Muhsin Ali, Ilka Visscher, Robert Grootjans, Jörn P. Epping, Chris G. H. Roeloffzen, Guillermo Carpintero
  Publisher: IEEE Journal of Lightwave Technology, vol. 39, no. 24, pp. 7664-7671, 15 Dec.15, 2021, DOI: 10.1109/JLT.2021.3078508.
• Lossless 1×4 Silicon Photonic ROADM based on a Monolithic Integrated Erbium Doped Waveguide Amplifier on a Si3N4 platform
  Christos Vagionas, Apostolos Tsakyridis, Themistoklis Chrysostomidis, Ioannis Roumpos, Konstantinos Fotiadis, Athanasios Manolis, Jinfeng Mu, Meindert Dijkstra, Sonia M. Garcia Blanco, Ruud M. Oldenbeuving, Paulus W.L. Van Dijk, Chris G.H. Roeloffzen, Konstantinos Vyrsokinos, Nikos Pleros, Theonitsa Alexoudi
  Pubilsher: Journal of Lightwave Technology, vol. 40, no. 6, pp. 1718-1725, 15 March, 2022, DOI: 10.1109/JLT.2021.3131130
• Intra-Data Centre Flexible PAM Transmission System Using an Integrated InP-Si3N4 Dual Laser Module
  Marcos Troncoso-Costas, Devika Dass, Colm Browning, Francisco J. Diaz-Otero, Chris G. H. Roeloffzen, Liam P. Barry
  Publisher: IEEE Photonics Journal, vol. 14, no. 1, pp. 1-6, Feb. 2022, Art no. 7205106, DOI: 10.1109/JPHOT.2021.3128767.
• Design and Performance Estimation of a Photonic Integrated Beamforming Receiver for Scan-on-Receive Synthetic Aperture Radar
  Manuel Reza; Giovanni Serafino; Tobias Otto; Ahmad Mohammad; Hakimeh Mohammadhosseini; Leili Shiramin; Francesco Floris; Matthias Kolb; Dave Bail; Simone Gabrielli, Chris Roeloffzen, Paul van Dijk, Amin Abbassi, Bart Destoete and Paulo Gelfi
  Publisher: IEEE Journal of Lightwave Technology, vol. 39, no. 24, pp. 7588-7599, 15 Dec.15, 2021, DOI: 10.1109/JLT.2021.3119225.
• True Time Delay Optical Beamforming Network Based on Hybrid InP-Silicon Nitride Integration
  Christos Tsokos, Efstathios Andrianopoulos, Adam Raptakis, Nikolaos K. Lyras, Lefteris Gounaridis, Panos Groumas, Roelof Bernardus Timens, Ilka Visscher, Robert Grootjans, Lennart Wefers, Dimitri Geskus, Edwin Klein, Hercules Avramopoulos, René Heideman, Christos Kouloumentas, and Chris G. H. Roeloffzen
  Publisher: IEEE Journal of Lightwave Technology; DOI: 10.1109/JLT.2021.3089881.
• Experimental Demonstration of Dynamic Optical Beamforming for Beyond 5G Spatially Multiplexed Fronthaul Networks
  Raul Muñoz, Simon Rommel, Paul van Dijk, Juan Brenes, Evangelos Grivas, Carlos Manso, Chris Roeloffzen, Ricard Vilalta , Josep M. Fabrega, Giada Landi, Ramon Casellas, Ricardo Martínez and Idelfonso Tafur Monroy
  Publisher: IEEE Journal of Selected Topics in Quantum Electronics, vol. 27, no. 6, pp. 1-16, Nov.-Dec. 2021, Art no. 8600216, DOI: 10.1109/JSTQE.2021.3079726.
• REAP: revealing drug tolerant persister cells in cancer using contrast enhanced optical coherence and photoacoustic tomography photoacoustic tomography
  Mengyang Liu, Abigail J Deloria, Richard Haindl, Qian Li, Gergely Szakacs, Agnes Csiszar, Stefan Schrittwieser, Paul Muellner, Rainer Hainberger, Beatriz Pelaz, Ester Polo, Pablo Del Pino, Antti Penttinen, Mircea Guina, Tapio Niemi, Kristen Meiburger, Filippo Molinari, Christian Menhard, Judith Heidelin, Volker Andresen, Douwe Geuzebroek and Wolfgang Drexler
  Publisher: IOP Publishing Ltd. Journal of Physics: Photonics, Volume 3, Number 2; DOI: 10.1088/2515-7647/abf02f
• Silicon nitride PIC-based multi-color laser engines for life science applications
  Alireza Tabatabaei Mashayekh, Thomas Klos, Douwe Geuzebroek, Edwin Klein, Theo Veenstra, Martin Büscher, Florian Merget, Patrick Leisching and Jeremy Witzens
  Publisher: OSA publishing, Optics Express, Volume 29, Issue 6, March 2021; DOI: 10.1364/OE.417245
• Photonic Integrated Circuits for Terahertz Communication: The Hybrid Integrated Microwave Photonic approach
  Guillermo Carpintero, Luis González, Robinson Guzmán, Muhsin Ali, David de Felipe, Tianwen Qian, Norbert Keil, Robert Grootjans, Chris Roeloffzen
  Publisher: Optical Fiber Communication Conference 2021 (OFC 2021), Washington, DC United States. DOI: 10.5281/zenodo.5638278
• A Miniature Bio-Photonics Companion Diagnostics Platform for Reliable Cancer Treatment Monitoring in Blood Fluids
  Marianneza Chatzipetrou, Lefteris Gounaridis, George Tsekenis, Maria Dimadi, Rachel Vestering-Stenger, Erik F. Schreuder, Anke Trilling, Geert Besselink, Luc Scheres, Adriaan van der Meer, Ernst Lindhout, Rene G. Heideman, Henk Leeuwis, Siegfried Graf, Tormod Volden, Michael Ningler, Christos Kouloumentas, Claudia Strehle, Vincent Revol, Apostolos Klinakis, Hercules Avramopoulos and Ioanna Zergioti
  Publisher: MDPI,  published in Sensors 2021, issue 21 DOI: 10.3390/s21062230

Publications 2020

• Ring resonator enhanced mode-hop-free wavelength tuning of an integrated extended-cavity laser
  Albert van Rees, Youwen Fan, Dimitri Geskus, Edwin J. Klein, Ruud M. Oldenbeuving, Peter J. M. van der Slot, and Klaus-J. Boller
  Publisher: OSA publishing, Optics Express, Volume 28, Issue 4, February 2020; DOI: 10.1364/OE.386356

• Erbium-doped TeO₂-coated Si₃N₄ waveguide amplifiers with 5 dB net gain
  Henry C. Frankis, Hamidu M. Mbonde, Dawson B. Bonneville, Chenglin Zhang, Richard Mateman, Arne Leinse, and Jonathan D. B. Bradley
  Publisher: OSA Publishing, Photonics Research, Vol. 8, Issue 2, February 2020; DOI: 10.1364/PRJ.8.000127

• Analog IFoF/mmWave 5G Optical Fronthaul Architecture for Hot-Spots Using Multi-channel OFDM-Based WDM Signals
  Charoula Mitsolidou, Christos Vagionas, Agapi Mesodiakaki, Pavlos Maniotis, George Kalfas, Chris G.H. Roeloffzen, Paulus W.L. van Dijk, Ruud M. Oldenbeuving, Amalia Miliou, Nikos Pleros
  Publisher: SpringerLink, February 2020; ONDM 2019; DOI: 10.1007/978-3-030-38085-4_43

• First realization of a hybrid integrated diode laser in the visible spectral range
  Kees Franken, Albert van Rees, Youwen Fan, Dimitri Geskus, Ronald Dekker, Douwe Geuzebroek, Carsten Fallnich, Peter van der Slot, Klaus-Jochen Boller
  Publisher: SPIE Digital Library; Event: SPIE OPTO, 2020; Proceedings Volume 11301, Novel In-Plane Semiconductor Lasers XIX, March 2020; DOI: 10.1117/12.2565028

• High power integrated laser for microwave photonics
  Jörn P. Epping, Ruud M. Oldenbeuving, Dimitri Geskus, Ilka Visscher, Robert Grootjans, Chris G.H. Roeloffzen, René G. Heideman
  Publisher: OSA publishing, March 2020; DOI: 10.1364/OFC.2020.Th2A.2

• Integrated photonics multi-waveguide devices for optical trapping and Raman spectroscopy: design, fabrication and performance demonstration
  Gyllion B. Loozen, Arnica Karuna, Mohammad M. R. Fanood, Erik Schreuder, Jacob Caro
  Publisher: Beilstein Journal of Nanotechnology, May 2020, 11, 829–842. doi:10.3762/bjnano.11.68

• Ultra-sensitive photonic integrated circuit-based biosensors for healthcare applications
  René G. Heideman, Arne Leinse, Douwe H. Geuzebroek, Frederik Schreuder, Floris Falke, Ioanna Zergioti, Adriaan van der Meer, Anke Schuetz-Trilling, Luc Scheres, Rachel Vestering-Stenger
  Publisher: SPIE Digital Library; Proceedings Volume 11283, Integrated Optics: Devices, Materials, and Technologies XXIV; 112830Q (2020); DOI: 10.1117/12.2551879

• Hybrid integrated silicon nitride lasers
  Jörn P. Epping, Arne Leinse, Ruud M. Oldenbeuving, Ilka Visscher, Douwe Geuzebroek, Dimitri Geskus, Albert van Rees, Klaus J. Boller, Michael Theurer, Martin Möhrle, Martin Schell, Chris G. H. Roeloffzen, René G. Heideman
  Publisher: Proceedings Volume 11274, March 2020; Physics and Simulation of Optoelectronic Devices XXVIII; 112741L; DOI: 10.1117/12.2552264

• Light source for coherent Raman scattering based on spontaneous four-wave mixing in silicon nitride waveguides
  Niklas M. Lüpken, Thomas Würthwein, Jörn P. Epping, Klaus-Jochen Boller, Carsten Fallnich
  Publisher: Proceedings Volume 11252, Advanced Chemical Microscopy for Life Science and Translational Medicine; 112520B (March 2020); DOI: 10.1117/12.2566479

• Flip-Chip Integration of InP to SiN Photonic Integrated Circuits
  Michael Theurer , Martin Moehrle, Ariane Sigmund, Karl-Otto Velthaus, Ruud M. Oldenbeuving, Lennart Wevers, Ferry M. Postma , Richard Mateman, Frederik Schreuder, Dimitri Geskus, Kerstin Wörhoff, Ronald Dekker, Rene G. Heideman, Martin Schell
  Publisher: IEEE, May 2020: Published in Journal of Lightwave Technology, Volume: 38, Issue: 9; DOI: 10.1109/JLT.2020.2972065

• Flexible 360° 5G mmWave small Cell Coverage through WDM 4×1 Gb/s Fiber Wireless Fronthaul and a Si3N4 OADM-Assisted Massive MIMO Phased Array Antenna
  Eugenio Ruggeri, Apostolos Tsakyridis, Christos Vagionas, George Kalfas, Ruud M. Oldenbeuving, Paul W. L. van Dijk, Chris G. H. Roeloffzen, Yigal Leiba, Nikos Pleros, Amalia Miliou
  Publisher: IEEE Xplore, published May 2020; INSPEC Accession Number: 19591824

• PIX4life’s silicon nitride integrated photonics platforms: present status and future outlook
  Adil Masood, Douwe Geuzebroek, Pieter Dumon, Marcel van der Vliet, Iñigo Artundo, Romano Hoofman, Hilde Jans
  Publisher: SPIE Digital Library; published May 2020, Proceedings Volume 11364, Integrated Photonics Platforms: Fundamental Research, Manufacturing and Applications; 113640P (2020); DOI: 10.1117/12.2559868

• Spontaneous four-wave mixing in silicon nitride waveguides for broadband coherent anti-Stokes Raman scattering spectroscopy
  Niklas M. Lüpken, Thomas Würthwein, Jörn P. Epping, Klaus-Jochen Boller, Carsten Fallnich
  Publisher: Optics Letters, Volume 45, Issue 14, 3873-3876, June 2020, DOI: 10.1364/OL.396394

• Highly Sensitive Protein Detection by Asymmetric Mach–Zehnder Interferometry for Biosensing Applications
  Melissa J. Goodwin, Geert A. J. Besselink, Floris Falke, Arnoud S. Everhardt, Jeroen J. L. M. Cornelissen, Jurriaan Huskens
  Publisher: ACS Publications, ACS Appl. Bio Mater, June 2020; DOI: 10.1021/acsabm.0c00491

• Realization of a Hybrid Integrated Diode laser for Visible Light
  Albert van Rees, Cornelis AA Franken, Youwen Fan, Dimitri Geskus, Ronald Dekker, Douwe H Geuzebroek, Carsten Fallnich, Peter JM van der Slot, Klaus-J Boller
  Publisher: ECIO 2020, June 2020

• Towards a Scaleable 5G Fronthaul: Analog Radio-over-Fiber and Space Division Multiplexing
  Simon Rommel, Delphin Dodane, Evangelos Grivas, Bruno Cimoli, Jerome Bourderionnet, Gilles Feugnet, Alvaro Morales, Evangelos Pikasis, Chris G. H. Roeloffzen, Paulus W. L. van Dijk, Michail Katsikis, Konstantinos Ntontin, Dimitrios Kritharidis, Izabela Spaleniak, Paul Mitchell, Mykhaylo Dubov, Juliana Barros Carvalho, Idelfonso Tafur Monroy
  Publisher: IEEE Xplore; Published in: Journal of Lightwave Technology, June 2020; DOI: 10.1109/JLT.2020.3004416

• Hybrid integrated InP-Si3N4 diode laser with a 40-Hz intrinsic linewidth
  Youwen Fan, Albert van Rees, Peter J. M. van der Slot, Jesse Mak, Ruud M. Oldenbeuving, Marcel Hoekman, Dimitri Geskus, Chris G. H. Roeloffzen, and Klaus-J. Boller
  Publisher: OSA Publishing, Volume 28, Issue 15; July 2020; DOI: 10.1364/OE.398906