Low-cost planar waveguide-based optofluidic sensor for real-time refractive index sensing

被引：32
作者：
Barshilia, Devesh [1 ,2 ]
Chau, Lai-Kwan [3 ,4 ]
Chang, Guo-En [1 ,2 ]
机构：
[1] Natl Chung Cheng Univ, Dept Mech Engn, Minxiong 62102, Chia Yi County, Taiwan
[2] Natl Chung Cheng Univ, Adv Inst Mfg High Tech Innovat AIM HI, Minxiong 62102, Chia Yi County, Taiwan
[3] Natl Chung Cheng Univ, Dept Chem & Biochem, Minxiong 62102, Chia Yi County, Taiwan
[4] Natl Chung Cheng Univ, Ctr Nano Biodetect, Minxiong 62102, Chia Yi County, Taiwan
来源：
OPTICS EXPRESS | 2020年 / 28卷 / 19期
关键词：
SURFACE-PLASMON RESONANCE; PHOTONIC CRYSTALS; BIOSENSOR; FABRICATION; SENSITIVITY; COUPLER; SYSTEM;
D O I：
10.1364/OE.400800
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the design, fabrication, and characterization of mass-producible, sensitive, intensity-detection-based planar waveguide sensors for rapid refractive index (RI) sensing; the sensors comprise suspended glass planar waveguides on glass substrates, and are integrated with microfluidic channels. They are facilely and cost-effectively constructed via vacuum-less processes. They yield a high throughput, enabling mass production. The sensors respond to solutions with different RIs via variations in the transmitted optical power due to coupling loss in the sensing region, facilitating real-time and simple RI detection. Experiments yield a good resolution of 5.65 x 10(-4) RIU. This work has major implications for several RI-sensing-based applications. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：27337 / 27345
页数：9
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