Parametric amplification of a 640 Gbit/s RZ-DPSK signal. - Zohreh Lali-Dastjerdi; Michael Galili; Hans Christian Hansen Mulvad; Hao Hu 009; Leif Katsuo Oxenløwe; Karsten Rottwitt; Christophe Peucheret (OFC/NFOEC, 2013)

Challenges in higher order mode Raman amplifiers. - Karsten Rottwitt; Kristian Nielsen; Seren M. M. Friis; Mario A. U. CastanedaLyngby (OFC, 2015)

Higher order mode optical fiber Raman amplifiers. - Karsten Rottwitt; Soren Michael Mork Friis; Mario A. Usuga Castaneda; Erik N. Christensen; Jacob Gade Kofoed (ICTON, 2016)

Two-Dimensional Quantum Key Distribution (QKD) Protocol for Increased Key Rate Fiber-Based Quantum Communications. - Beatrice Da Lio; Davide Bacco; Yunhong Ding; Daniele Cozzolino; Kjeld Dalgaard; Karsten Rottwitt; Leif K. Oxenløwe (ECOC, 2017)

12 Mode, MIMO-free OAM transmission. - Kasper Ingerslev; Patrick Gregg; Michael Galili; Francesco Da Ros; Hao Hu 009; Fangdi Bao; Mario A. Usuga Castaneda; Poul Kristensen; Andrea Rubano; Lorenzo Marrucci; Siddharth Ramachandran; Karsten Rottwitt; et al. (OFC, 2017)

Improved SBS Limited Parametric Conversion by Use of Few-Mode Fibers. - Neethu Mariam Mathew; Erik N. Christensen; Lars Gruner-Nielsen; Karsten Rottwitt (ECOC, 2018)

Nonlinear Optical Signal Processing and Generation of Quantum States using Intermodal Four-wave Mixing. - Karsten Rottwitt; Mario A. Usuga Castaneda; Erik N. Christensen; Jesper B. Christensen; Jacob Gade Koefoed (ICTON, 2018)

A Novel Fabrication Method for Photonic Lanterns. - Neethu Mariam Mathew; Lars Gruner-Nielsen; Mario A. Usuga Castaneda; Karsten Rottwitt (OFC, 2018)

Free-Space Few-Mode Kramers-Kronig Receiver. - Kasper Ingerslev; Georg Rademacher; Ruben S. Luís; Benjamin J. Puttnam; Werner Klaus; Satoshi Shinada; Yoshinari Awaji; Karsten Rottwitt; Toshio Morioka; Leif Katsuo Oxenløwe; Naoya Wada (PSC, 2018)

High-Dimensional Quantum Communication Using Space Encoding. - Davide Bacco; Daniele Cozzolino; Beatrice Da Lio; Yunhong Ding; Kasper Ingerslev; Michael Galili; Karsten Rottwitt; Siddharth Ramachandran; Leif Katsuo Oxenløwe (ICTON, 2019)

Silicon Photonics for Quantum Communication. - Yunhong Ding; Davide Bacco; Daniel Llewellyn; Imad Faruque; Stefano Paesani; Michael Galili; Anthony Laing; Karsten Rottwitt; Mark G. Thompson; Jianwei Wang; L. K. Oxenlnwe (ICTON, 2019)

Quantum Information Processing Using Intermodal Four-Wave Mixing in Multi-Mode Optical Fibers. - Karsten Rottwitt; Jesper B. Christensen; Erik N. Christensen; Jacob Gade Koefoed (ICTON, 2019)

Direct Measurement of Polarization Dependency of Mode Conversion in a Long Period Grating. - Lars Gruner-Nielsen; Neethu Mariam Mathew; Karsten Rottwitt (OFC, 2019)

Polarization Dependence of Mode-Group Selective Air-Clad Photonic Lantern. - Neethu Mariam Mathew; Lars Gruner-Nielsen; Michael Galili; Mads Lillieholm; Mario A. Usuga Castaneda; Karsten Rottwitt (OFC, 2019)

Quantum Communication with Orbital Angular Momentum. - Davide Bacco; Daniele Cozzolino; Beatrice Da Lio; Yunhong Ding; Karsten Rottwitt; Leif Katsuo Oxenløwe (ICTON, 2020)

Quantum Entanglement and Teleportation Based on Silicon Photonics. - Yunhong Ding; Daniel Llewellyn; Imad Faruque; Davide Bacco; Karsten Rottwitt; Mark G. Thompson; Jianwei Wang; Leif K. Oxenløwe (ICTON, 2020)

Intermodal Raman Scattering between Orbital Angular Momentum Modes in Optical Fibers. - Karsten Rottwitt; Neethu Mariam Mathew; Lars Grüner-Nielsen; Lars Rishøj (ICTON, 2020)

Integrated Quantum Photonics on Silicon Platform. - Yunhong Ding; Daniel Llewellyn; Imad Faruque; Stefano Paesani; Davide Bacco; Karsten Rottwitt; Anthony Laing; Mark G. Thompson; Jianwei Wang; Leif K. Oxenløwe (OFC, 2020)

Mode Division Multiplexing on Standard 50/125 µm Multi Mode Fiber using Photonic Lanterns. - Lars Grüner-Nielsen; Neethu Mariam Mathew; Magnus Hornhaver Nymann; Mads Lillieholm; Michael Galili; Karsten Rottwitt (OFC, 2021)

Photonic-Lantern-Based MDM Devices. - Lars Grüner-Nielsen; Neethu Mariam Mathew; Michael Galili; Lars Søgaard Rishøj; Karsten Rottwitt (OFC, 2023)

Uncoupled 6-core Fibers with a Standard 125-μm Cladding, ITU-T G.652 Optical Properties, and Low XT. - Kazunori Mukasa; Takeshi Takagi; Takaaki Shishikura; Katsuhisa Maruyma; Hajime Oshio; Aditi Mehta; Karsten Rottwitt; Toshio Morioka (OFC, 2023)

Detrimental effects in four wave mixing. - Karsten Rottwitt; Thjalfe Ulvenberg; Lars Søgaard Rishøj; Jacob Gade Koefoed; Lars Grüner-Nielsen (ICTON, 2024)

Repeaterless Brillouin OTDR Sensing over 250 km using Erbium doped Fiber Amplifier. - Neethu Mariam Mathew; Mads Holmark Vandborg; Jesper Bjerge Christensen; Zepeng Wang; Lars Grüner-Nielsen; Lars Søgaard Rishøj; Benjamin Marx; M. Ali Allousch; Tommy Geisler; Mikael Lassen; Karsten Rottwitt (OFC, 2024)

Power Resilient, Air-Gap Multi-Core Fiber with >20 W Fiber Fuse Propagation Threshold per Core. - Aditi Mehta; Kazunori Mukasa; Takeshi Takagi; Mujtaba Zahidy; Yaoxin Liu; Kjeld Dalgaard; Karsten Rottwitt; Michael Galili; Leif Katsuo Oxenløwe; Toshio Morioka (OFC, 2024)

Repeaterless Brillouin OTDR Sensing. - Neethu Mariam Mathew; Mads Holmark Vandborg; Jesper Bjerge Christensen; Zepeng Wang; Lars Grüner-Nielsen; Lars Søgaard Rishøj; Roger Crickmore; Thibault North; Tommy Geisler; Mikael Lassen; Karsten Rottwitt (OFC, 2025)