Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response

被引：132

作者：

Densmore, A. ^{[1
]}

Xu, D. -X. ^{[1
]}

Janz, S. ^{[1
]}

Waldron, P. ^{[1
]}

Mischki, T. ^{[2
]}

Lopinski, G. ^{[2
]}

Delage, A. ^{[1
]}

Lapointe, J. ^{[1
]}

Cheben, P. ^{[1
]}

Lamontagne, B. ^{[1
]}

Schmid, J. H. ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[2] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada

来源：

OPTICS LETTERS | 2008年 / 33卷 / 06期

关键词：

D O I：

10.1364/OL.33.000596

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a new silicon photonic wire waveguide evanescent field (PWEF) sensor that exploits the strong evanescent field of the transverse magnetic mode of this high-index-contrast, submicrometer-dimension waveguide. High sensitivity is achieved by using a 2 mm. long double-spiral waveguide structure that fits within a compact circular area of 150 mu m diameter, facilitating compatibility with commercial spotting apparatus and the fabrication of densely spaced sensor arrays. By incorporating the PWEF sensor element into a balanced waveguide Mach-Zehnder interferometer circuit, a minimum detectable mass of similar to 10 fg of streptavidin protein is demonstrated with near temperature-independent response. (C) 2008 Optical Society of America.

引用

页码：596 / 598

页数：3

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