InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing

被引：5
|
作者：
Wang, Bowen [1 ]
Dundar, Mehmet A. [1 ]
Notzel, Richard [1 ]
Karouta, Fouad [1 ]
He, Sailing
van der Heijden, Rob W. [1 ]
机构：
[1] Eindhoven Univ Technol, COBRA Res Inst, POB 513, NL-5600 MB Eindhoven, Netherlands
来源：
PHOTONIC AND PHONONIC PROPERTIES OF ENGINEERED NANOSTRUCTURES | 2011年 / 7946卷
基金：
中国国家自然科学基金;
关键词：
photonic crystal; slot; nanobeam; LIGHT; OPTOFLUIDICS; CAVITY;
D O I：
10.1117/12.873709
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Results are presented on the use of InGaAsP photonic crystal nanobeam slot waveguides for refractive index sensing. These sensors are read remote-optically through photoluminescence, which is generated by built-in InGaAs quantum dots. The nanobeams are designed to maximize the electromagnetic field intensity in the slot region, which resulted in record-high sensitivities in the order of 700 nm/RIU (refractive index unit). A cavity, created by locally deflecting the two beams towards each other through overetching, is shown to improve the sensitivity by about 20%.
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页数：8
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