Conference paper
New fractal structures for frequencies close to the visible range
In this paper we present a new type of fractal resonator to be used in the red/NIR region of the spectra. The structure presents high-transmission band in 795-825nm range. The stop band is in the 683-731 nm range. Due to the huge difference in the spectra within such a short range, the structure can be used as an efficient sensor, both in transmission as well as in reflection.
Thus, a variation of only 0.09 in the refraction index will for example change the structure’s behaviour from 90% reflection to 90% transmission. Such resonances lead to a sensitivity of 780 nm/RIU. Another advantage of this resonator is the independency of the incidence angle - in the spectral re-gion of interest; the incidence angle has very little influence over the response.
Language: | English |
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Year: | 2011 |
Pages: | 474-476 |
Proceedings: | 5th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics |
ISBN: | 9526761103 and 9789526761107 |
Types: | Conference paper |
ORCIDs: | Malureanu, Radu , Andryieuski, Andrei and Lavrinenko, Andrei |