Design of simultaneous high-Q and high-sensitivity photonic crystal refractive index sensors

被引：48
|
作者：
Yang, Daquan [1 ,2 ]
Tian, Huiping [2 ,3 ,4 ]
Ji, Yuefeng [2 ]
Quan, Qimin [1 ]
机构：
[1] Harvard Univ, Rowland Inst, Cambridge, MA 02142 USA
[2] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[3] Fudan Univ, Minist Educ, Key Lab Micro & Nano Photon Struct, Shanghai 200433, Peoples R China
[4] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2013年 / 30卷 / 08期
关键词：
MICROFLUIDICS; CAVITY; FIBER; SPR;
D O I：
10.1364/JOSAB.30.002027
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Sensitivities (S) and quality factors (Q) have been trade-offs in label-free optical resonator sensors, and optimal geometry that maximizes both factors is under active development. In this paper, we demonstrate that the nano-slotted parallel multibeam cavity possesses unexplored high S and high Q. We achieve S > 800 nm/RIU (refractive index unit) and Q > 10(7) in liquid at telecom wavelength range when absorption is neglected. To the best of our knowledge, this is the first geometry that features both high S and Q factors, and thus is potentially an ideal platform for refractive index-based biochemical sensing. (C) 2013 Optical Society of America
引用
收藏
页码：2027 / 2031
页数：5
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