Reduced graphene oxide for fiber-optic toluene gas sensing

被引：32

作者：

Xiao, Yi ^{[1
,2
]}

Yu, Jianhui ^{[1
,2
]}

Shun, Long ^{[3
]}

Tan, Shaozao ^{[4
]}

Cai, Xiang ^{[5
]}

Luo, Yunhan ^{[1
,2
]}

Zhang, Jun ^{[1
,2
]}

Dong, Huazhuo ^{[1
,2
]}

Lu, Huihui ^{[1
,2
]}

Guan, Heyuan ^{[1
,2
]}

Zhong, Yongchun ^{[1
,2
]}

Tang, Jieyuan ^{[1
,2
]}

Chen, Zhe ^{[1
,2
]}

机构：

[1] Jinan Univ, Key Lab Optoelect Informat & Sensing Technol, Guangdong Higher Educ Inst, Guangzhou 510632, Guangdong, Peoples R China

[2] Jinan Univ, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou 510632, Guangdong, Peoples R China

[3] Jinan Univ, Dept Comp Sci, Guangzhou 510632, Guangdong, Peoples R China

[4] Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China

[5] Guangdong Polytech, Dept Light Chem Engn, Foshan 528041, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 25期

基金：

中国国家自然科学基金;

关键词：

OPTICAL MODULATOR; WAVE-GUIDE; SENSOR; POLARIZER; FILM; NANOTUBES; LIGHT; FIELD;

D O I：

10.1364/OE.24.028290

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A fiber-optic toluene gas sensor based on reduced graphene oxide (rGO) is demonstrated and its sensing property is investigated experimentally and theoretically. The rGO film is deposited on a side polished fiber (SPF), allowing the strong interaction between rGO film and propagating field and making the SPF sensitive to toluene gas. It is found that the sensor has good linearity and reversibility and can work at room temperature with the response and the recovery time of 256 s and the detection limit of 79 ppm. Moreover, a theoretical model for the sensor is established to analyze the sensing mechanism. Theoretical analysis indicates this type of sensor could work in a wide range of toluene gas concentration and shows that a significant rise in its sensitivity can be expected by adjusting the doping level or chemical potential of graphene. (C) 2016 Optical Society of America

引用

页码：28290 / 28302

页数：13

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