Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity

被引：405

作者：

Chow, E ^{[1
]}

Grot, A ^{[1
]}

Mirkarimi, LW ^{[1
]}

Sigalas, M ^{[1
]}

Girolami, G ^{[1
]}

机构：

[1] Agilent Technol, Palo Alto, CA 94304 USA

来源：

OPTICS LETTERS | 2004年 / 29卷 / 10期

关键词：

D O I：

10.1364/OL.29.001093

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report an experimental demonstration of an ultracompact biochemical sensor based on a two-dimensional photonic crystal microcavity. The microcavity, fabricated on a silicon-on-insulator substrate, is designed to have a resonant wavelength (lambda) near 1.5 mum. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n = 1.0 to n = 1.5. From observation of the shift in resonant wavelength, a change in ambient refractive index of Deltan = 0.002 is readily apparent. The correspondence between absolute refractive index and resonant wavelength agrees with numerical calculation to within 4% accuracy. The evaporation of water in a 5% glycerol mixture is also used to demonstrate the capability for in situ time-resolved sensing. (C) 2004 Optical Society of America

引用

页码：1093 / 1095

页数：3

共 15 条

[1] Colorimetric resonant reflection as a direct biochemical assay technique [J].