1. NKT Photonics A/S, Blokken 84, Birkerød 3460, DenmarkbUniversity of Kent, Applied Optics Group, School of Physical Science, Ingram Building, Canterbury, Kent CT2 7NH, United Kingdom
2. NKT Photonics A/S, Blokken 84, Birkerød 3460, Denmark
3. Elforlight Ltd., 4b Brunel Close, Daventry, Northamptonshire NN11 8RB, United Kingdom
4. NKT Photonics A/S, Blokken 84, Birkerød 3460, DenmarkdTechnical University of Denmark, DTU Fotonik, Department of Photonics Engineering, Kongens Lyngby 2800, Denmark
5. University of Kent, Applied Optics Group, School of Physical Science, Ingram Building, Canterbury, Kent CT2 7NH, United Kingdom