Design of a compact photonic crystal sensor

Derbali, J. and AbdelMalek, F. and Obayya, S. S. A. and Bouchriha, H. and Letizia, R. (2011) Design of a compact photonic crystal sensor. Optical and Quantum Electronics, 42 (8). pp. 463-472. ISSN 0306-8919

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The development of technology in photonic crystal (PC) structures has seen rapid progress. Using PCs in biosensing area may open new venues to achieve single molecule detection, and high resolution scanning. A novel PC sensor with improved performances, in terms of size, compactness and sensitivity is presented in this paper. The sensing element consists of dielectric cylinders with varying radius introduced along < 01 > and < 10 > directions of the crystal. The results show that the peak wavelength shifts to the high frequency region when only six cylinders are filled with analytes. Also, the peaks show a larger shift compared to the structure obtained using the entire PC waveguide as sensing region. The proposed sensor shows a better sensitivity to water than other analytes, where the peak wavelength tends to shift towards the low frequency region.

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Journal Article
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Optical and Quantum Electronics
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22 Aug 2012 08:23
Last Modified:
01 Jan 2022 10:46