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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 533-536 |
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Khazaie M, Roshan Entezar S, razi S. Biosensor Based on Anisotropic Photonic Crystal Including Semiconductor Layers and Birefringence Slabs with graded thickness variations. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :533-536
URL: http://opsi.ir/article-1-2644-en.html
URL: http://opsi.ir/article-1-2644-en.html
1- tabriz university
2- Tabriz University
3- Urmia University Of Technology
2- Tabriz University
3- Urmia University Of Technology
Abstract: (502 Views)
Abstract- Biosensor based on one dimensional photonic crystal (PC) and including anisotropic birefringence layers of KTP and semiconductor slabs of PbS and TiO2 is suggested in this paper. In order to increase the detection accuracy and quality as well as realization of a superior substrate for better excitation of Bloch surface waves, layers of graphene are considered between the sensor core (PC) and the studied biological material. Also the structure of the crystal is selected in a way that the thicknesses of the involved layers are increased in a specific manner as they approach the bio-sample. Results clearly indicate that optical response of the suggested structure are totally in relation with the structural characteristics of the PC so that by changing the thickness of the layers, not only the central wavelength of the resonant mode is changed but also its intensity and width are affected as well. Furthermore, the number of the periods of the layers has also a very important effect on the reflectance spectrum of the suggested sensor and by increasing its value the resonant mode is generated at lower wavelengths and its width is reduced.
Keywords: Photonic crystal, Tunable responsivity, Birefringence slab, Graded thickness changes, Biosensor.
Type of Study: Experimental |
Subject:
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