| Institution: | (1) Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA;(2) Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA;(3) Birck Nanotechnology Centre, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA |
| Abstract: | We report on the experimental demonstration of the broadband “trapped rainbow” in the visible range using arrays of adiabatically
tapered optical nanowaveguides. Being a distinct case of the slow light phenomenon, the trapped rainbow effect could be applied
to optical signal processing, sensing in such applications as spectroscopy on a chip, and to providing enhanced light-matter
interactions. As an example of the latter applications, we have fabricated a large area array of tapered nanowaveguides, which
exhibit broadband “trapped rainbow” effect. Considerable fluorescence enhancement due to slow light behavior in the array
has been observed. |
