Curriculum Vitae

Position: Research Associate
With this Institute since: 04/2020

Degrees: M.Sc. in Electrical Engineering
Graduation: 2020, Karlsruhe Institute of Technology (KIT)

Present Research Interests:

Space-Division Multiplexing in Optical Communications
Free-Space Optical Communications

Publications

Journal Articles

Nardo, F.; Barrios, R.; Tepper, J.; Krötz, P.; Krimmer, J.; Randel, S. (2026). Experimental Characterization of Optical Fiber Bundles for Free-Space Optical Communication in High-Altitude Platforms. IEEE Journal of Selected Topics in Quantum Electronics, 32 (1: Advanc…pace Laser), 1–9. doi:10.1109/JSTQE.2025.3607094
Matalla, P.; Krimmer, J.; Schmitz, L.; Fang, D.; Koos, C.; Randel, S. (2025). Joint Non-Data-Aided Clock Recovery for Space-Division Multiplexed Optical Transmission Systems. Journal of Lightwave Technology, 43 (13), 6128–6138. doi:10.1109/JLT.2025.3546721

Conference Papers

Nardo, F.; Tepper, J.; Barrios, R.; Krimmer, J.; Randel, S. (2025). Performance and applications of optical pin beams in turbulent long-range free space optical communications. H. Hemmati & B. S. Robinson (Eds.), Free-Space Laser Communications XXXVII, 59, SPIE. doi:10.1117/12.3040720
Bao, Y.; Paszkiewicz, M.; Krimmer, J.; Freude, W.; Randel, S.; Rockstuhl, C.; Koos, C. (2024). Loss Prediction and 3D Trajectory Design of Photonic Wire Bonds using Artificial Neural Networks (ANN). Conference on Lasers and Electro-Optics: Science and Innovations 2024 (CLEO), Charlotte, USA, May 5th-10th 2024, Art.-Nr.: SM1I.3, Optica Publishing Group (OSA). doi:10.1364/CLEO_SI.2024.SM1I.3
Foroutan-Barenji, S.; Krimmer, J.; Freude, W.; Koos, C. (2024). Efficient Modelling of 3D-Printed Freeform Waveguides by a Dedicated Beam-Propagation Method (BPM) Based on Transformation Optics. The 25th European Conference on Integrated Optics. Ed.: J. Witzens, 105–110, Springer Nature Switzerland. doi:10.1007/978-3-031-63378-2_18
Krimmer, J.; Vliet, V. van; Hout, M. van den; Heide, S. van der; Bradley, T.; Okonkwo, C.; Randel, S. (2023). Experimental validation of a statistical model of mode-diverse reception in coherent free-space optical communications. Proceedings of COAT-2023 Workshop: Communications and Observations through Atmospheric Turbulence.
Krimmer, J.; Schmitz, L.; Freude, W.; Koos, C.; Randel, S. (2022). Spatio-Temporal Statistical Model of Free-Space-to-Fiber Coupling Under Atmospheric Turbulence. Proceedings Optical Fiber Communication Conference (OFC) 2022, 6–10 March 2022, San Diego, California, United States, Art.-Nr.: W2A.12, Optica Publishing Group (OSA). doi:10.1364/OFC.2022.W2A.12
Krimmer, J.; Randel, S. (2021). Statistical Analysis of Mode-Division Multiplexing Gains in Coherent Free-Space Optical Communications. TG-Fb. 297: Photonische Netze : Beiträge der 22. ITG-Fachtagung 19. – 20. Mai 2021, Online-Veranstaltung [Photonic Networks; 22th ITG Symposium], 58–65, VDE Verlag.
Krimmer, J.; Füllner, C.; Randel, S. (2021). A New Approach to Nonuniform Sampling of Bounded Atmospheric Turbulence Spectra. European Conference and Exhibition on Optical Communication, ECOC 2020, 06.12.2020 - 10.12.2020, Virtual, 1–4, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ECOC48923.2020.9333410
Krimmer, J.; Füllner, C.; Freude, W.; Koos, C.; Randel, S. (2020). Statistical Analysis of Free-Space-to-Fiber Coupling Under Atmospheric Turbulence. OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF), NeM4B.3, Optica Publishing Group (OSA). doi:10.1364/NETWORKS.2020.NeM4B.3

Presentations

Krimmer, J.; Randel, S. (2024, February 21). Simulation of Terrestrial Free-Space Optical Communication Links under Atmospheric Turbulence. ITG Workshop Fachgruppe KT 3.1 Modellierung und Simulation photonischer Komponenten und Systeme (2024), Stuttgart, Germany, February 20–21, 2024.
Krimmer, J.; Stöhr, S.; Dietrich, P.-I.; Schmidt, S.; Kapim, H.; Henniger-Ludwig, A.; Randel, S. (2023, May 9). Space-Division Multiplexing for the Fiber-Optic Networking Infrastructure of Datacenters. 24. ITG-Fachtagung Photonische Netze (2023), Leipzig, Germany, May 9–10, 2023.
Krimmer, J.; Vliet, V. van; Hout, M. van den; Heide, S. van der; Bradley, T.; Koos, C.; Freude, W.; Okonkwo, C.; Randel, S. (2023, March 31). Experimental validation of a statistical model of mode-diverse reception in coherent free-space optical communications. Communications and Observations through Atmospheric Turbulence (2023), Durham, United Kingdom, March 29–31, 2023.
Krimmer, J.; Freude, W.; Koos, C.; Randel, S. (2021, May 20). Statistical Analysis of Mode-Division Multiplexing Gains in Coherent Free-Space Optical Communications. 22th ITG-Symposium on Photonic Networks (2021), Online, May 19–20, 2021.
Krimmer, J.; Füllner, C.; Randel, S. (2020, December). A New Approach to Nonuniform Sampling of Bounded Atmospheric Turbulence Spectra. European Conference on Optical Communication (ECOC 2020), Online, December 6–10, 2020.
Krimmer, J.; Füllner, C.; Freude, W.; Koos, C.; Randel, S. (2020, July). Statistical Analysis of Free-Space-to-Fiber Coupling Under Atmospheric Turbulence. Advanced Photonics Congress (IPR, Networks, NOMA,NP, PSC, PVLED, SOF, SPPCom 2020), Washington, DC, USA, July 13–16, 2020.
Krimmer, J.; Füllner, C.; Freude, W.; Koos, C.; Randel, S. (2020, February 19). Statistical Modelling of Free-Space to Multi-Mode-Fiber Coupling Under Atmospheric Turbulence. ITG Workshop Fachgruppe KT 3.1 Modellierung und Simulation photonischer Komponenten und Systeme (2020), Karlsruhe, Germany, February 18–19, 2020.

Posters

Krimmer, J.; Schmitz, L.; Freude, W.; Koos, C.; Randel, S. (2022, March 9). Spatio-Temporal Statistical Model of Free-Space-to-Fiber Coupling Under Atmospheric Turbulence. Optical Fiber Communications Conference and Exhibition (OFC 2022), San Diego, CA, USA, March 6–10, 2022.