Refractive Index Gas Sensing in a Hollow Photonic Crystal Cavity

被引：0
|
作者：
Jagerska, J. [1 ]
Le Thomas, N. [1 ]
Zhang, H. [1 ]
Diao, Z. [1 ]
Houdre, R. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Stn 3, FSB, Inst Phys Mat Condensee, CH-1015 Lausanne, Switzerland
来源：
2010 12TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON) | 2011年
关键词：
Photonic crystals; air-slot waveguide; refractive index sensing; CARBON-DIOXIDE; LINE-DEFECT; LIGHT; NANOCAVITIES; NITROGEN;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We investigate hollow photonic crystal structures consisting in air-slot photonic crystal nanocavities. The high quality factor similar to 2.6x10(4) of such cavities along with a strong overlap between the resonant mode and the hollow core region allows for a strong interaction with an optically active medium in the air slot. This is illustrated in achieving highly sensitive refractive index sensing of a gas infiltrated in the slot. An experimental sensitivity of 610 nm per refractive index unit (RUI) and a detection limit below 1x10(-5) RUI are demonstrated. The device has a remarkably low sensing volume of 40 attoliters, which at atmospheric pressure and room temperature contains as little as 1x10(6) molecules.
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页数：4
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