Karsten Rottwitt

Karsten Rottwitt

Professor, Group Leader

DTU FOTONIK
Department of Photonics Engineering

Fiber Optics, Devices and Non-linear Effects

Technical University of Denmark

Ørsteds Plads

Building 343, room 130

2800 Kgs. Lyngby

Ph.
Mobile
Fax +45 45 93 65 81
E-mail karo@fotonik.dtu.dk

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2019
 

Direct Measurement of Polarization Dependency of Mode Conversion in a Long Period Grating

Grüner-Nielsen, Lars ; Mariam Mathew, Neethu ; Rottwitt, Karsten
part of: Optical Fiber Communication Conference 2019, 2019, Optical Society of America
Presented at:
Optical Fiber Communication Conference 2019

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1364/OFC.2019.Th2A.15

  PDF

Experimental demonstration of the DPTS QKD protocol over a 170 km fiber link

da Lio, Beatrice ; Bacco, Davide ; Cozzolino, Daniele ; Ding, Y. ; Dalgaard, K. ; Rottwitt, Karsten ; Oxenløwe, Leif Katsuo
in: Applied Physics Letters, vol: 114, issue: 1

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1063/1.5049659

  PDF

Hong–Ou–Mandel interference between independent III–V on silicon waveguide integrated lasers

Agnesi, C. ; Da Lio, B. ; Cozzolino, ; Cardi, L. ; Bakir, B. Ben ; Hassan, K. ; Frera, A. della ; Ruggeri, A. ; Giudice, A. ; Vallone, G. ; Villoresi, P. ; Tosi, A. ; Rottwitt, Karsten ; Ding, Wenjun ; Bacco, Davide
in: Optics Letters, vol: 44, issue: 2, pages: 271-274

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1364/OL.44.000271

  PDF

Inter-modal Raman amplification of OAM fiber modes

Rottwitt, Karsten ; Koefoed, Jacob Gade ; Ingerslev, Kasper ; Kristensen, Poul
in: APL Photonics, vol: 4, issue: 3

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1063/1.5051794

 

Polarization dependence of mode group selective air clad photonic lanterns

Mariam Mathew, Neethu ; Grüner-Nielsen, Lars ; Galili, Michael ; Lillieholm, Mads ; Usuga Castaneda, Mario A. ; Rottwitt, Karsten
part of: Optical Fiber Communication Conference 2019, 2019, Optical Society of America
Presented at:
Optical Fiber Communication Conference 2019

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1364/OFC.2019.Th3D.6

  PDF

SLM phase mask optimization for fiber OAM mode excitation

Astorino, Antonio ; Bañas, Andrew Rafael ; Rottwitt, Karsten ; Glückstad, Jesper
part of: Proceedings of SPIE, 2019, SPIE - International Society for Optical Engineering
Presented at:
Complex Light and Optical Forces XIII

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1117/12.2507424

2018
  PDF

Photon-pair sources based on intermodal four-wave mixing in few-mode fibers

Rottwitt, Karsten ; Koefoed, Jacob Gade ; Christensen, Erik Nicolai
in: Fibers, vol: 6, issue: 2

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.3390/fib6020032

  PDF

Experimentally validated dispersion tailoring in a silicon strip waveguide with alumina thin-film coating

Guo, Kai ; Christensen, Jesper Bjerge ; Shi, Xiaodong ; Christensen, Erik Nicolai ; Lin, Li ; Ding, Yunhong ; Ou, Haiyan ; Rottwitt, Karsten
in: IEEE Photonics Journal, vol: 10, issue: 2

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1109/JPHOT.2018.2802931

  PDF

12 mode, WDM, MIMO-free orbital angular momentum transmission

Ingerslev, Kasper ; Gregg, Patrick ; Galili, Michael ; Da Ros, Francesco ; Hu, Hao ; Bao, Fangdi ; Usuga Castaneda, Mario A. ; Kristensen, Poul ; Rubano, Andrea ; Marrucci, Lorenzo ; Rottwitt, Karsten ; Morioka, Toshio ; Ramachandran, Siddharth ; Oxenløwe, Leif Katsuo
in: Optics Express, vol: 26, issue: 16, pages: 20225-232

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1364/OE.26.020225

 

Analytic description of four-wave mixing in silicon-on-insulator waveguides

Friis, Søren Michael Mørk ; Koefoed, Jacob Gade ; Guo, Kai ; Rottwitt, Karsten
in: Optical Society of America. Journal B: Optical Physics, vol: 35, issue: 4, pages: 702-710

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1364/JOSAB.35.000702