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Proceedings Paper

Measurement and characteristic analysis of refractive index of biological medium adsorption on two-dimensional photonic crystal surface
Author(s): Kai Tong; Jianru Lu; Zhenguo Zhang; Hui-bo Wang; Ying Chen
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Paper Abstract

The two-dimensional (2D) SiO2 photonic crystal (PC) is constructed with the substrate of polyester film. The PC period is 800nm, and the duty cycle is 0.5.The high refractive index coating is deposited on the surface of PC. Rigorous coupled-wave (RCWA) theory is used to analyze 2D PC narrowband reflection spectrum characteristic. A relationship model between reflection peak wavelength and medium refractive index adsorption on surface of 2D PC is established. The conclusion shows that there is a linear relationship between reflection wavelength of the PC and the refractive index of adsorption medium, with the refractive index of adsorption medium in the range of 1.3-1.8. The effects of the refractive index of deposited coating on the sensitivity of the PC biosensor are analyzed. With the increase of the refractive index of the deposited coating, the sensitivity of the sensor is increasing.

Paper Details

Date Published: 21 August 2014
PDF: 6 pages
Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 92330O (21 August 2014); doi: 10.1117/12.2069631
Show Author Affiliations
Kai Tong, Yanshan Univ. (China)
Jianru Lu, Yanshan Univ. (China)
Zhenguo Zhang, Yanshan Univ. (China)
Hui-bo Wang, Yanshan Univ. (China)
Ying Chen, Yanshan Univ. (China)

Published in SPIE Proceedings Vol. 9233:
International Symposium on Photonics and Optoelectronics 2014
Zhiping Zhou, Editor(s)

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