Publications

Journal Articles (8)

• Xu, Y.; Maier, P.; Trappen, M.; Dietrich, P.-I.; Blaicher, M.; Jutas, R.; Weber, A.; Kind, T.; Dankwart, C.; Stephan, J.; Steffan, A.; Abbasi, A.; Morrissey, P.; Gradkowski, K.; Kelly, B.; O'Brien, P.; Freude, W.; Koos, C.
  3D-printed facet-attached microlenses for advanced photonic system assembly
  Light: Adv. Manuf. 4 (2023) [DOI]


• Maier, P.; Chen, Y.; Xu, Y.; Bao, Y.; Blaicher, M.; Geskus, D.; Dekker, R.; Liu, J.; Dietrich, P.-I.; Peng, H.; Randel, S.; Freude, W.; Kippenberg, T. J.; Koos, C.
  Sub-kHz-linewidth external-cavity laser (ECL) with Si3N4 resonator used as a tunable pump for a Kerr frequency comb
  J. Lightwave Technol. 41, 3479-3490 (2023) [DOI]


• Maier, P.; Xu, Y.; Trappen, M.; Lauermann, M.; Henniger-Ludwig, A.; Kapim, H.; Kind, T.; Dietrich, P.-I.; Weber, A.; Blaicher, M.; Wurster, C.; Randel, S.; Freude, W.; Koos, C.
  3D-printed facet-attached optical elements for connecting VCSEL and photodiodes to fiber arrays and multi-core fibers
  Opt. Express 30, 46602-46625 (2022) [DOI]


• Singer, S.; Xu, Y.; Skacel, S. T.; Bao, Y.; Zwickel, H.; Maier, P.; Freter, L.; Dietrich, P.-I.; Kaschel, M.; Menzel, C.; Randel, S.; Freude, W.; Koos, C.
  3D-printed facet-attached optical elements for beam shaping in optical phased arrays
  Opt. Express 30, 46564-46574 (2022) [DOI]


• Xu, Y.; Kuzmin, A.; Knehr, E.; Blaicher, M.; Ilin, K.; Dietrich, P.-I.; Freude, W.; Siegel, M.; Koos, C.
  Superconducting nanowire single-photon detector with 3D-printed free-form microlenses
  Opt. Express 29, 27708-27731 (2021) [DOI]


• Xu, Y.; Maier, P.; Blaicher, M.; Dietrich, P.-I.; Marin-Palomo, P.; Hartmann, W.; Bao, Y.; Peng, H.; Billah, M. R.; Singer, S.; Troppenz, U.; Moehrle, M.; Randel, S.; Freude, W.; Koos, C.
  Hybrid external-cavity lasers (ECL) using photonic wire bonds as coupling elements
  Scientific Reports 11, 16426 (2021) [DOI] more


• Anagnos, T.; Trappen, M.; Tiong, B. C. K.; Feger, T.; Yerolatsitis, S.; Harris, R. J.; Lozi, J.; Jovanovic, N.; Birks, T. A.; Vievard, S.; Guyon, O.; Gris-Sanchez, I.; Leon-Saval, S. G.; Norris, B.; Haffert, S. Y.; Hottinger, P.; Blaicher, M.; Xu, Y.; Betters, C. H.; Koos, C.; Coutts, D. W.; Schwaab, P.; Quirrenbach, A.
  3D-M3: high-spatial-resolution spectroscopy with extreme AO and 3D-printed micro-lenslets
  Applied Optics 60, D108-D121 (2021) [DOI]


• Trappen, M.; Blaicher, M.; Dietrich, P.-I.; Dankwart, C.; Xu, Y.; Hoose, T.; Billah, M. R.; Abbasi, A.; Baets, R.; Troppenz, U.; Theurer, A.; Woerhoff, K.; Seyfried, M.; Freude, W.; Koos, C.
  3D-printed optical probes for wafer-level testing of photonic integrated circuits
  Opt. Express 28, 37996-38007 (2020) [DOI]

Conference Contributions (14)

• Singer, S.; Xu, Y.; Skacel, S. T.; Menzel, C.; Baldischweiler, B.; Ringwald, S.; Caspers, J. N.; Schneider, S.; Krayl, O.; Reichenbacher, D.; Randel, S.; Freude, W.; Koos, C.
  'LiDAR demonstration using an InP optical phased array (OPA) with a 3D-printed optical beam-shaping element
  European Conference on Optical Communication (ECOC'24), Frankfurt, Germany, Sept. 22-26, 2024; Paper W1F.2 (2024)


• Maier, P.; Xu, Y.; Blaicher, M.; Geskus, D.; Dekker, R.; Liu, J.; Dietrich, P.-I.; Peng, H.; Randel, S.; Freude, W.; Kippenberg, T. J.; Koos, C.
  InP/Si3N4 Hybrid External-Cavity Laser With sub-kHz Linewidth Acting as a Pump Source for Kerr Frequency Combs
  European Conference on Optical Communication (ECOC), Basel, Switzerland, Sept. 18-22 , paper We2E.4 (2022) more


• Singer, S.; Xu, Y.; Skacel, S.; Zwickel, H.; Maier, P.; Dietrich, P.-I.; Kaschel, M.; Menzel, C.; Randel, S.; Freude, W.; Koos, C.
  3D-Printed Facet-Attached Optical Elements for Beam Shaping in Solid-State Phased Arrays
  Conference on Lasers and Electro-Optics (CLEO), San José, U.S.A., May 15-20 , Paper SM4P.5 (2022) [DOI]


• Maier, P.; Bremauer, C.; Bao, Y.; Xu, Y.; Ganin, D.; Randel, S.; Freude, W.; Koos, C.
  Swept-Source Optical Coherence Tomography (SS-OCT) Using a Hybrid Silicon Photonic External-Cavity Laser (ECL)
  Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, May 15-19 , paper AM5I.4 (2022) more


• Maier, P.; Xu, Y.; Lauermann, M.; Henniger-Ludwig, A.; Kapim, H.; Trappen, M.; Kind, T.; Weber, A.; Blaicher, M.; Dietrich, P.-I.; Wurster, C.; Randel, S.; Freude, W.; Koos, C.
  3D-Printed Optical Elements for Coupling of VCSEL and Photodiode Arrays to Multi-Core Fibers in an SFP Transceiver Assembly
  Optical Fiber Communications Conference and Exhibition (OFC); San Diego, CA, USA, March 06–10 , paper W2A.1 (2022) [DOI] more


• Knehr, E.; Xu, Y.; Bao, Y.; Maier, P.; Jimenez, C.; Ilin, K.; Ziegler, M.; Schmidt, H.; Kempf, S.; Kuzmin, A.
  Optical packaging of SNSPDs with photonic wire bonds
  15th European Conference on Applied Superconductivity (EUCAS 2021), Online, September 5–9 (2021)


• Harris, R. J.; Pike, F.; Trappen, M.; Haffert, S. Y.; Xu, Y.; Benoit, A.; Ross, C.; MacLachlan, D.; Barboza, S.; Maier, P.
  Multi-core fibre-fed integral field spectrograph (MCIFU) IV: the fiber link
  R. Geyl & R. Navarro (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, online, USA, Dec. 14-22 , 11451, 1145124 (2020) [DOI]


• Xu, Y.; Blaicher, M.; Marin-Palomo, P.; Hartmann, W.; Billah, M. R.; Troppenz, U.; Mohrle, M.; Randel, S.; Freude, W.; Koos, C.
  InP/Silicon Hybrid External-Cavity Lasers (ECL) Using Photonic Wirebonds as Coupling Elements
  Conference on Optical Fiber Communication (OFC), San Diego, CA, USA, March 08– 12 , paper M4H.6. (2020) [DOI]


• Xu, Y.; Maier, P.; Blaicher, M.; Dietrich, P.-I.; Billah, M. R.; Marin-Palomo, P.; Hartmann, W.; Troppenz, U.; Moehrle, M.; Randel, S.; Freude, W.; Koos, C.
  InP/Silicon Hybrid External-Cavity Lasers (ECL) Using Photonic Wirebonds as Coupling Elements
  Optical Fiber Communication Conference (OFC), San Diego (CA), USA, March 08–12, paper M4H.6 (2020) more


• Trappen, M.; Blaicher, M.; Dietrich, P.-I.; Hoose, T.; Xu, Y.; Billah, M. R.; Freude, W.; Koos, C.
  3D-Printed Optics for Wafer-Scale Probing
  44th European Conference on Optical Communication (ECOC), Rome, Italy, September 23-27, paper Tu4C.2 (2018) [DOI]


• Koos, C.; Freude, W.; Randel, S.; Billah, M. R.; Blaicher, M.; Dietrich, P.-I.; Hoose, T.; Xu, Y.; Kemal, J. N.; Nesic, A.; Hofmann, A.
  Photonic Wire Bonding and 3D Nanoprinting in Photonic Integration – from Lab Demonstrations to Production
  44th European Conference on Optical Communication (ECOC'18), Rome, Italy, September 23-27 , paper 8535426 (2018) [DOI] (invited)


• Koos, C.; Freude, W.; Randel, S.; Dietrich, P.-I.; Blaicher, M.; Xu, Y.; Billah, M. R.; Hoose, T.; Trappen, M.; Hofmann, A.
  Efficient Coupling Interfaces in Photonic Systems Enabled by Printed Freeform Micro-Optics
  20th International Conference on Transparent Optical Networks (ICTON'18), Bucharest, Romania, July 1 – 5 , paper Mo.D5.5 (2018) [DOI] (invited)


• Koos, C.; Freude, W.; Randel, S.; Billah, M. R.; Blaicher, M.; Dietrich, P.-I.; Hoose, T.; Xu, Y.; Hofmann, A.
  Photonic Wirebonding and 3D Nanoprinting in Optical Packaging: From Research to Manufacturing
  SPIE Photonics Europe 2018 Strasbourg, April 23 – 26 , paper 10686-7 (2018) (invited)


• Billah, M. R.; Kemal, J. N.; Marin-Palomo, P.; Blaicher, M.; Kutuvantavida, Y.; Kieninger, C.; Zwickel, H.; Dietrich, P.-I.; Wolf, S.; Hoose, T.; Xu, Y.; Troppenz, U.; Moehrle, M.; Randel, S.; Freude, W.; Koos, C.
  Four-Channel 784 Gbit/s Transmitter Module Enabled by Photonic Wire Bonding and Silicon-Organic Hybrid Modulators
  43rd European Conf. Opt. Commun. (ECOC'17), Gothenburg, Sweden, Sept. 17 –21 , paper Th.PDP.C.1 (2017) [DOI] (postdeadline)

Lectures (2)

• Koos, C.; Kippenberg, T. J.; Randel, S.; Freude, W.; Zwick, T.; Scheytt, J. C.; Witzens, J.; Fang, D.; Drayss, D.; Harter, T.; Ummethala, S.; Kieninger, C.; Zwickel, H.; Marin-Palomo, P.; Fuellner, C.; Billah, M. R.; Blaicher, M.; Xu, Y.; Lauermann, M.; Skacel, S.; Lihachev, G.; Schaefer, J.; Gudyriev, S.; Zazzi, A.; Mueller, J.
  Terahertz Analogue-to-Digital Conversion Using Soliton Frequency Combs and Massively Parallel Spectrally Sliced Detection (TeraSlice)
  International Workshop on Mobile THz Systems (IWMTS), online event, Duisburg, Germany, July 5 – 7 (2021) (invited)


• Koos, C.; Dietrich, P.-I.; Billah, M. R.; Hoose, T.; Xu, Y.; Trappen, M.; Nesic, A.; Hofmann, A.
  Photonic Wirebonding - from Lab to Fab
  OptecNet Jahrestagung, Berlin, Germany, June 20 – 21 (2018) (invited)

Workshops (1)

• Koos, C.; Kippenberg, T. J.; Randel, S.; Freude, W.; Zwick, T.; Scheytt, J. C.; Witzens, J.; Fang, D.; Drayss, D.; Harter, T.; Ummethala, S.; Kieninger, C.; Zwickel, H.; Marin-Palomo, P.; Fuellner, C.; Billah, M. R.; Blaicher, M.; Xu, Y.; Lauermann, M.; Skacel, S.; Lihachev, G.; Schaefer, J.; Gudyriev, S.; Zazzi, A.; Mueller, J.
  Terahertz Analogue-to-Digital Conversion Using Soliton Frequency Combs and Massively Parallel Spectrally Sliced Detection (TeraSlice)
  (2021)