Sensitivity Improvement of Plasmonic Optical Fiber Sensors with Graphene-Metal Nanowire Array

Lizhen Zeng; Zetao Ou; Hongyan Yang; Yongfu Su; Jiapeng Su; Jiayu Chen; Gongli Xiao

doi:10.3788/AOS202242.1906002

Journals >Acta Optica Sinica >Volume 42 >Issue 19 >Page 1906002 > Article

Acta Optica Sinica
Vol. 42, Issue 19, 1906002 (2022)

Sensitivity Improvement of Plasmonic Optical Fiber Sensors with Graphene-Metal Nanowire Array

Lizhen Zeng¹, Zetao Ou², Hongyan Yang³, Yongfu Su³, Jiapeng Su², Jiayu Chen², and Gongli Xiao^2、*

Author Affiliations

¹Graduate School, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China

²Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China

³School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China

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DOI: 10.3788/AOS202242.1906002 Cite this Article Set citation alerts

Lizhen Zeng, Zetao Ou, Hongyan Yang, Yongfu Su, Jiapeng Su, Jiayu Chen, Gongli Xiao. Sensitivity Improvement of Plasmonic Optical Fiber Sensors with Graphene-Metal Nanowire Array[J]. Acta Optica Sinica, 2022, 42(19): 1906002 Copy Citation Text

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Schematic diagrams of D-type plasmonic optical fiber sensors. Its side is polished and coated with (a) gold film structure,(b) graphene-gold film-graphene structure, and (c) graphene-metal nanowire array structure; (d) three-dimensional structure diagram

Fig. 1. Schematic diagrams of D-type plasmonic optical fiber sensors. Its side is polished and coated with (a) gold film structure,(b) graphene-gold film-graphene structure, and (c) graphene-metal nanowire array structure; (d) three-dimensional structure diagram

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Fig. 2. Plasmonic optical fiber sensor. (a) Resonance analysis of three models; (b) dispersion relation and mode analysis of gold film structure model

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$Optimization of gold film thickness t and gold nanowire diameter d. (a) Relationship between t and loss for refractive indexes of 1.33 and 1.34, respectively; (b) influence of t on performance of sensor; (c) relationship between d and loss for refractive indexes of 1.33 and 1.34, respectively; (d) influence of d on performance of sensor$

Fig. 3. Optimization of gold film thickness

t

and gold nanowire diameter

d

. (a) Relationship between

t

and loss for refractive indexes of 1.33 and 1.34, respectively; (b) influence of

t

on performance of sensor; (c) relationship between

d

and loss for refractive indexes of 1.33 and 1.34, respectively; (d) influence of

d

on performance of sensor

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$Loss, refractive index, and resonance wavelength when RI to be measured is changing. (a)-(c) Change of transmission loss with wavelength; (d)-(f) change of resonance wavelength$

Fig. 4. Loss, refractive index, and resonance wavelength when RI to be measured is changing. (a)-(c) Change of transmission loss with wavelength; (d)-(f) change of resonance wavelength

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Reference	RI range	Sensitivity /（nm·RIU^-1）	Average sensitivity /（nm·RIU^-1）	Published year
Ref.［4］	1.3332-1.3710	3074.34	—	2019
Ref.［11］	1.3200-1.3800	7000.00	—	2020
Ref.［38］	1.3300-1.4100	6875.00	—	2020
Ref.［39］	1.3300-1.3800	7000.00	—	2021
Ref.［40］	1.3300-1.3700	—	525.00	2021
Ref.［41］	1.3300-1.4000	—	3475.14	2021
Ref.［42］	1.3200-1.3600	6430.00	—	2014
Ref.［43］	1.3330-1.4040	6328.00	—	2019
Ref.［44］	1.3400-1.4200	4284.80	—	2021
Our work	1.3300-1.4000	7383.79	4136.00	—

Table 1. Performance comparison of various fiber optic sensors

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