1. Faculty of Microsystem Electronics and Photonics; Wroclaw University of Technology; Janiszewskiego 11/17 50-372 Wroclaw Poland
2. Institute of Physics; Wroclaw University of Technology; Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
3. AMMONO S. A; Prusa 2 00-493 Warsaw Poland