Autler-Townes splitting biosensing based on a nonuniform photonic crystal waveguide with feedback loop

被引：5

作者：

Yuan, Guohui ^{[1
]}

Peng, Fangcao ^{[1
]}

Guan, Lei ^{[1
]}

Peng, Zhenming ^{[1
]}

Wang, Zhuoran ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Sichuan, Peoples R China

来源：

APPLIED OPTICS | 2018年 / 57卷 / 24期

基金：

中国国家自然科学基金;

关键词：

ELECTROMAGNETICALLY INDUCED TRANSPARENCY; MICRORING RESONATOR; RING RESONATORS; SLOW-LIGHT; NANOBEAM CAVITIES; MICROCAVITIES; SENSOR; OPTIMIZATION; DESIGN;

D O I：

10.1364/AO.57.006976

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Aimed at a high-performance biosensor for sensing biological molecules quickly and accurately, a novel nonuniform photonic crystal waveguide (NUPhCW) with a feedback loop is systematically investigated based on the mode-splitting effect. Thanks to the careful design of the nonuniform holes of NUPhCW with a feedback loop, the Autler-Townes splitting occurs in our device, and the spacing of two splitting resonance modes changes with the environmental refractive index, which is beneficial for achieving biosensing scenarios. Further, this integrated structure allows for self-referencing detection for immunity against environmental noise. Sensitivity of the NUPhCW is achieved at similar to 117 nm/RIU, which is 2.6 times more than that of the common microring resonator, indicating that our proposed device structure would be promising for high-quality optical label-free sensing. (C) 2018 Optical Society of America

引用

页码：6976 / 6981

页数：6

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