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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Andrei Tsarev Eugeny Kolosovsky Francesco De Leonardis Vittorio M. N. Passaro |
| Abstract | This paper discusses the physical nature and the numerical modeling of a novel approach of periodic structures for applications as photonic sensors. The sensing is based on the high sensitivity to the cover index change of the notch wavelength. This sensitivity is due to the effect of abnormal blocking of the guided wave propagating along the silicon wire with periodic strips overhead it through the silica buffer. The structure sensing is numerically modeled by 2D and 3D finite difference time domain (FDTD) method, taking into account the waveguide dispersion. The modeling of the long structures (more than 1000 strips) is accomplished by the 2D method of lines (MoL) with a maximal implementation of the analytical feature of the method. It is proved that the effect of abnormal blocking could be used for the construction of novel types of optical sensors. |
| e-ISSN | 14248220 |
| DOI | 10.3390/s18061707 |
| Journal | Sensors |
| Issue Number | 6 |
| Volume Number | 18 |
| Language | English |
| Publisher | MDPI AG |
| Publisher Date | 2018-05-01 |
| Publisher Place | Switzerland |
| Access Restriction | Open |
| Subject Keyword | Chemical Technology Diffraction Segmented Gratings Silicon and Compounds Optical Sensors |
| Content Type | Text |
| Resource Type | Article |
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