| Dual-channel microfluidic sensor based on side-hole fiber with two long-period fiber gratings |
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| 作者姓名： | 张羽 李勇志 刘超 刘志海 张亚勋 杨兴华 张建中 杨军 苑立波 |
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| 作者单位： | Key Laboratory of In-fiber Integrated Optics;National Demonstration Center for Experimental Physics Education;Photonics Research Center |
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| 基金项目： | supported by the National Key R&D Program of China(No.2018YFC1503703);the National Natural Science Foundation of China(Nos.61975039,61675053,61775047,and 61705051);the 111 Project(No.B13015);the Fundamental Research Funds for Harbin Engineering University of China。 |
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| 摘 要： | We propose and demonstrate a dual-channel microfluidic sensor based on a side-hole fiber(SHF)with two longperiod fiber grating(LPFG)structures.There are two air holes in the SHF,which are natural microfluidic channels.We fabricate two LPFGs(long-period gratings LPG-A and LPG-B)in the SHF with the resonance wavelengths of 1268.7 nm and 1385.8 nm,respectively.Results show that the refractive index sensitivities of LPG-A and LPG-B are?76.0 nm/RIU and?71.1 nm/RIU,respectively.One can measure the refractive index of liquid samples in two channels simultaneously.The proposed dual-channel microfluidic sensor has advantages of good linearity response,fluidic technology compatibility,and easy light input/output coupling and system integration,which helps the sensor to have a potential application in environmental detection and food safety detection.
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| 关 键 词： | long-period GRATING OPTICAL FIBER SENSOR refractive INDEX measurement |
Dual-channel microfluidic sensor based on side-hole fiber with two long-period fiber gratings |
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| Yu Zhang,Yongzhi Li,Chao Liu,Zhihai Liu,Yaxun Zhang,Xinghua Yang,Jianzhong Zhang,Jun Yang,Libo Yuan.Dual-channel microfluidic sensor based on side-hole fiber with two long-period fiber gratings[J].中国光学快报(英文版),2020(2):1-4. |
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| Authors: | Yu Zhang Yongzhi Li Chao Liu Zhihai Liu Yaxun Zhang Xinghua Yang Jianzhong Zhang Jun Yang Libo Yuan |
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| Institution: | (Key Laboratory of In-fiber Integrated Optics,Ministry of Education,Harbin Engineering University,Harbin 150001,China;National Demonstration Center for Experimental Physics Education,Harbin Engineering University,Harbin 150001,China;Photonics Research Center,Guilin University of Electronics Technology,Guilin 541004,China) |
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| Abstract: | We propose and demonstrate a dual-channel microfluidic sensor based on a side-hole fiber(SHF) with two longperiod fiber grating(LPFG) structures. There are two air holes in the SHF, which are natural microfluidic channels. We fabricate two LPFGs(long-period gratings LPG-A and LPG-B) in the SHF with the resonance wavelengths of 1268.7 nm and 1385.8 nm, respectively. Results show that the refractive index sensitivities of LPG-A and LPG-B are-76.0 nm/RIU and-71.1 nm/RIU, respectively. One can measure the refractive index of liquid samples in two channels simultaneously. The proposed dual-channel microfluidic sensor has advantages of good linearity response, fluidic technology compatibility, and easy light input/output coupling and system integration, which helps the sensor to have a potential application in environmental detection and food safety detection. |
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