作者
Adam Densmore, D-X Xu, Siegfried Janz, Philip Waldron, Trevor Mischki, Gregory Lopinski, André Delâge, J Lapointe, Pavel Cheben, Boris Lamontagne, JH Schmid
发表日期
2008/3/15
期刊
Optics letters
卷号
33
期号
6
页码范围
596-598
出版商
Optical Society of America
简介
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 μm 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 ~10 fg of streptavidin protein is demonstrated with near temperature-independent response.
引用总数
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A Densmore, DX Xu, S Janz, P Waldron, T Mischki… - Optics letters, 2008