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Design of a novel sensor based on tapered photonic crystal with negative refraction structures |
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| Authors: | F. Ouerghi F. AbdelMalek S. Haxha M. Mejatty H. Bouchriha |
| Affiliation: | 1. ESTI, Ariana, University of El Manar, Tunis, Tunisia 4. Group of Quantum Physics, Faculty of Sciences of Tunis, University of El Manar, Tunis, Tunisia 2. National Institute of Applied Sciences and Technology, University of Carthage, BP 676 Cedex, 1080, Tunis, Tunisia 3. Photonics Group, Department of Electronics, University of Kent, Canterbury, CT2 7NT, UK |
| Abstract: | We report a novel design of an ultracompact sensor consisting of two-dimension photonic crystal with negative refraction coupled to a taper ended by multicavity structure. It is shown that this system exhibits promising properties in the area of sensing. The presence of nanocavities enables the detection of small amount of analytes. By controlling their radii, a large quality factor, Q is reached. It is demonstrated that the quality factor is a key parameter in determining the sensitivity to the analytes. |
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