Liquid refractive index sensor based on slow light in slotted photonic crystal waveguide

被引:9
|
作者
Zhang, Ya-nan [1 ]
Zhao, Yong [1 ]
Wang, Qi [1 ]
Xue, Kai [1 ]
机构
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China
来源
OPTIK | 2013年 / 124卷 / 22期
基金
中国国家自然科学基金;
关键词
Liquid refractive index sensor; Slotted photonic crystal waveguide; Sensitivity; Slow light;
D O I
10.1016/j.ijleo.2013.03.131
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A high sensitive and compact refractive index sensor based on slotted photonic crystal waveguide (S-PhCW) is demonstrated. This design is worked on a Mach-Zehnder interferometer (MZI) configuration with S-PhCW as the measuring arm, which can be used to detect any changes in refractive index that correspond to different concentration of the measuring liquid. Combining the slow light enhancement in photonic crystal waveguide (PhCW) with the advantage of excellent optical confinement in slot waveguide, the sensitivity of this simple scheme can reach to 2.3 x 10(9) nm/RIU with the active region of only 1 mm long. (C) 2013 Elsevier GmbH. All rights reserved.
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页码:5443 / 5446
页数:4
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