基于氧化石墨修饰长周期光纤光栅的传感特性

石胜辉; 王鑫; 赵明富; 吴德操; 罗彬彬

doi:10.3788/OPE.20192711.2305

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基于氧化石墨修饰长周期光纤光栅的传感特性

现代应用光学 | 更新时间：2020-08-13

- 基于氧化石墨修饰长周期光纤光栅的传感特性
- Sensing characteristics of long period fiber grating functionalized with graphite oxide
- 光学精密工程 2019年27卷第11期页码：2305-2314
- 作者机构：
  
  1.重庆理工大学光纤传感与光电检测重庆市重点实验室，重庆 400054
  2.重庆理工大学智能光纤感知技术重庆市高校工程研究中心，重庆 400054
- 作者简介：
  
  [ "石胜辉(1980-)，男，重庆人，博士，讲师，2005年于长春理工大学获得学士学位，2008年于昆明理工大学获得硕士学位，2013年于电子科技大学获得博士学位，主要从事光纤光栅传感技术方面的研究。E-mail:shshill@cqut.edu.cn" ]
  赵明富(1964-)，男，重庆人，博士，教授，硕士生导师，2003年于西安交通大学获得硕士学位，2007年于重庆大学获得博士学位，主要从事现代光电检测技术及仪器、生化信息获取与智能传感方面的研究。E-mail: zmf@cqut.edu.cn ZHAO Ming-fu, E-mail: zmf@cqut.edu.cn
  罗彬彬(1981-)，男，广西人，博士，教授，硕士生导师，2003年、2006年、2012年于电子科技大学分别获得学士、硕士、博士学位，主要从事光纤传感、特种光纤光栅SPR/LSPR传感器原理及其在生物医学、生化及智能结构工程检测中的应用研究。E-mail: luobinbin@cqut.edu.cn LUO Bin-bin, E-mail: luobinbin@cqut.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(61875026);国家自然科学基金资助项目(61505017);重庆市科委前沿与基础项目(cstc2019jcyj-msxmX0093);重庆市科委前沿与基础项目(cstc2018jcyjAX0122);重庆市教育委员会科学技术研究项目(KJQN201801121);重庆理工大学研究生创新基金资助项目(yjs2018235);重庆理工大学研究生创新基金资助项目(ycx20192048);重庆理工大学研究生创新基金资助项目(ycx20192049)
- DOI：10.3788/OPE.20192711.2305
  中图分类号： TN253
- 收稿日期：2019-05-16，
  
  录用日期：2019-6-26，
  
  纸质出版日期：2019-11-15
- 稿件说明：
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石胜辉, 王鑫, 赵明富, 等. 基于氧化石墨修饰长周期光纤光栅的传感特性[J]. 光学精密工程, 2019,27(11):2305-2314.

Sheng-hui SHI, Xin WANG, Ming-fu ZHAO, et al. Sensing characteristics of long period fiber grating functionalized with graphite oxide[J]. Optics and precision engineering, 2019, 27(11): 2305-2314.
石胜辉, 王鑫, 赵明富, 等. 基于氧化石墨修饰长周期光纤光栅的传感特性[J]. 光学精密工程, 2019,27(11):2305-2314. DOI： 10.3788/OPE.20192711.2305.

Sheng-hui SHI, Xin WANG, Ming-fu ZHAO, et al. Sensing characteristics of long period fiber grating functionalized with graphite oxide[J]. Optics and precision engineering, 2019, 27(11): 2305-2314. DOI： 10.3788/OPE.20192711.2305.

摘要

提出一种基于氧化石墨烯(GO)修饰的长周期光纤光栅(LPFG)传感器。利用氢氧化钠溶液对LPFG表面进行羟基化处理，采用氢键结合的方式使GO固定在光栅表面，形成基于GO修饰的LPFG传感器。实验研究了GO-LPFG对外部折射率及温度的响应特性，结果表明：该GO-LPFG的平均折射率灵敏度较未涂覆GO的LPFG提高1.09倍，温度灵敏度略有降低。随着光栅直径的减小，GO-LPFG的平均折射率灵敏度进一步提高。当光栅直径为108

m时，在折射率1.333~1.448内的平均波长和耦合强度折射率灵敏度分别约为38.99 nm/RIU和57.33 dB/RIU，与未采用GO修饰直径为108

m的LPFG及直径为125

m的GO-LPFG相比，其平均波长和耦合强度折射率灵敏度分别提高1.45，2.17，3.80和3.42倍。该GO-LPFG传感器在各种大分子量的病毒抗原蛋白、生物病菌等生物检测领域具有潜在的应用价值。

Abstract

A graphene oxide-functionalized long period fiber grating (GO-LPFG)-based fiber optic sensor is proposed. The surface of the LPFG was hydroxylated by sodium hydroxide solution

and GO was fixed on the grating surface by hydrogen bonding to form a GO modification LPFG sensor. The responses of the GO-LPFG to external refractive index and temperature were studied experimentally. The experimental results show that the average refractive index sensitivity of the GO-LPFG is 1.09 times higher than that of uncoated LPFG

and the temperature sensitivity slightly declines. With the decrease of grating diameter

the average refractive index sensitivity of GO-LPFG was further improved. The average wavelength and coupling intensity refractive index sensitivities of the GO-LPFG with a diameter of 108

m in the refractive index range of 1.333-1.448 are ~38.99 nm/RIU and ~57.33 dB/RIU

respectively. These increased by 1.45

2.17 and 3.80

3.42 times

respectively

compared with those of bare LPFG and GO-LPFG with diameter of 125

m. The proposed GO-LPFG sensor has potential applications in detecting various viral antigen proteins with high molecular weight and biological pathogens in biofields.

关键词

Keywords

references

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