Single mode-no core-single mode fiber based surface plasmon resonance sensor (Invited)

被引：0

作者：

Chen Y. ^{[1
,2
]}

Li X. ^{[1
,2
,3
]}

机构：

[1] College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen

[2] Shenzhen Engineering Laboratory for Optical Fiber Sensors and Networks, Shenzhen University, Shenzhen

[3] Chinese University of Hong Kong, Shenzhen

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2020年 / 49卷 / 12期

关键词：

Multimode interference; Optical fiber SPR sensor; Refractive index;

D O I：

10.3788/IRLA20201055

中图分类号：

学科分类号：

摘要：

Optical fiber surface plasmon resonance (SPR) sensor combines the advantages of optical fiber sensor like miniaturization, online transmission, easy operation and SPR biodetection technology, which is highly sensitive, highly selective and label-free. It is currently a research hotspot of immunological biosensors. However, the signal of traditional multi-mode fiber based SPR sensor is easy to be lost and distorted in long-distance transmission. In this paper, a single mode-no core-single mode fiber based SPR sensor was proposed, which could effectively reduce the loss and distortion in signal transmission, and was suitable for connecting with the current optical fiber network. In order to eliminate the interference signal in the sensor, the core diameter of the no core fiber was changed, the methods of removing background interference and Gaussian fitting were adopted, and finally the sensor with the sensing region of 61.5 μm no core fiber was selected, the effective SPR spectrum signal was extracted from it. The sensitivity of proposed sensor is 1153.40 nm/RIU and the resolution is 1.70×10−4 RIU. The successful development of this kind of optical fiber biosensor provides a new idea for intelligent medical treatment and telemedicine. Copyright ©2020 Infrared and Laser Engineering. All rights reserved.

引用

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