光纤表面石墨烯修饰新方法及传感应用  

A New Method for Modifying the Fiber Surface With Graphene and Its Sensing Applications

作　　者：陈晓涌 林文伟 徐品 谢仲业 李波瑶 江倩虹 孙敬华 CHEN Xiao-yong;LIN Wen-wei;XU Pin;XIE Zhong-ye;LI Bo-yao;JIANG Qian-hong;SUN Jing-hua(School of Electrical Engineering and Intelligentization,Dongguan University of Technology,Dongguan 523808,China;School of Science,Shantou University,Shantou 510641,China;College of Literature and Media,Dongguan University of Technology,Dongguan 523808,China)

机构地区：[1]东莞理工学院电子工程与智能化学院,广东东莞523808 [2]汕头大学理学院,广东汕头515063 [3]东莞理工学院文学与传媒学院,广东东莞523808

出　　处：《光学与光电技术》2022年第4期57-61,共5页Optics & Optoelectronic Technology

基　　金：广东省基础与应用基础研究基金联合基金(2021B1515140029、2020B1515120041);东莞理工学院科研启动专项经费项目(GC300501-090);广东省普通高校省级重大科研项目(2018KZDXM067);国家自然科学基金(61705081)资助项目。

摘　　要：石墨烯作为碳纳米材料家族的新成员,具有许多独特的电学和光学性质,并且其对光纤表面的修饰可以提升光纤传感器的性能。传统的石墨烯修饰光纤表面的方法(液相转移法及气相沉积法)成本较高、操作难度大,而且会产生有毒气体。针对这一缺点,提出了一种新的石墨烯修饰光纤表面的方法,可以将分散液中的石墨烯有效提取并修饰于光纤表面,形成稳固的石墨层。实验结果表明,通过该方法修饰的倾斜光纤光栅,其石墨烯层不仅稳固,而且还在一定程度上提升了倾斜光纤光栅的折射率响应特性,灵敏提升了28%。此外,实验证明,修饰石墨烯层的倾斜光纤光栅可结合芘硼酸制成葡萄糖传感器,实现葡萄糖浓度的测量。Graphene is a new member of the carbon nanomaterial family,and it has many special properties in electronics and optics.Moreover,the performance of the fiber-optic sensors can be improved if their surfaces are modified with a layer of graphene.However,the conventional methods,including liquid phase transfer and vapor deposition methods,for modifying the fiber surface with a layer of graphene have some drawbacks,such as high-cost,difficult implementation,and generating toxic gas.In this paper,a new method for modifying the fiber surface with graphene is proposed,which enables to extract graphene fragments from the graphene dispersion waterand form an accumulation layer of graphene over the fiber surface.Experimental results demonstrate that the accumulation horizon over the surface of a tilted fiber Bragg grating(TFBG)is stable,and it can improve the sensitivity of the TFBG sensor for refractive index measurement with28%.Furthermore,the experimental results also show that the TFBG with a graphene layer can be made to be a glucose sensor,through attaching pyrene-1-boronic acidon the graphene,enabling a measurement of glucose concentration.

关 键 词：石墨烯 表面修饰 倾斜光纤光栅 光纤传感器 折射率测量 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置] TP212.9[自动化与计算机技术—控制科学与工程]