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

页码：2027 / 2031

页数：5

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