Multi-channel biosensor based on photonic crystal waveguide and microcavities

被引：10
|
作者：
Yun, Maojin [1 ]
Wan, Yong [1 ]
Liang, Jian [1 ]
Xia, Feng [1 ]
Liu, Meiling [1 ]
Ren, Liyong [2 ]
机构：
[1] Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China
[2] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
来源：
OPTIK | 2012年 / 123卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Optical sensor; Photonic crystal; Waveguide; Microcavity; FDTD; LABEL-FREE;
D O I：
10.1016/j.ijleo.2011.09.024
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An ultrasensitive two-dimensional photonic crystal biosensor is theoretically demonstrated in this paper. Such device consists of a waveguide and high Q-value microcavities which are realized by introducing line and point defects into the photonic crystal respectively. The band structures and the transmission spectra are obtained from the Finite-Difference -Time-Domain (FDTD) method. The simulation results showed that such device is strongly sensitive to the refractive index of the analyte injected into the point defect. The designed device can be applied for measurements of the refractive index and detection of protein-concentrations. (C) 2011 Elsevier GmbH. All rights reserved.
引用
收藏
页码：1920 / 1922
页数：3
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