Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber
Refractive index (RI) sensing is a promising technique in a variety of different scientific and industrial applications. In this paper, we theoretically and experimentally propose a newly-designed RI sensor. The proposed sensor consists of a particular long-period fiber grating inscribed in a two-mo...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9113258/ |
| _version_ | 1818853387761876992 |
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| author | Jie Dong Mei Sang Shuang Wang Tianhua Xu Lei Yang Yingdong Han Fan Zhao Tiegen Liu |
| author_facet | Jie Dong Mei Sang Shuang Wang Tianhua Xu Lei Yang Yingdong Han Fan Zhao Tiegen Liu |
| author_sort | Jie Dong |
| collection | DOAJ |
| description | Refractive index (RI) sensing is a promising technique in a variety of different scientific and industrial applications. In this paper, we theoretically and experimentally propose a newly-designed RI sensor. The proposed sensor consists of a particular long-period fiber grating inscribed in a two-mode fiber (LPFG-TMF) coated with tunable graphene oxide (GO), and the special structure allows an extremely high sensitivity in the transition region. The mode coupling between the LP11 core mode and the sixth-order cladding mode in the LPFG-TMF offers an apparently higher sensitivity feature. And the sensitivity is higher than that of a single-mode fiber-based LPFG (LPFG-SMF), which originates from the coupling between the core mode and the sixth-order cladding mode. Furthermore, the ultrasonic treatment time of GO, which impacts on the properties and performance of RI sensing, is also studied and investigated. Proof-of-concept results demonstrate significantly that comparing with the bare LPFG-TMF (621.66 nm/RIU) and LPFG-SMF coated with GO ultra-sonicated 5 hours (323.68nm/RIU), the LPFG-TMF coated with GO ultra-sonicated 5 hours performs optimized sensitivity of 11605.79 nm/RIU when surrounding RI ranges from 1.4558 to 1.4577. With its premium ability to operate high-sensitivity measurements, the RI sensing is expected to be useful for broad applications across the chemical fields. |
| first_indexed | 2024-12-19T07:36:01Z |
| format | Article |
| id | doaj.art-eb3ae08c44ba454e9d111189ea93097a |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T07:36:01Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-eb3ae08c44ba454e9d111189ea93097a2022-12-21T20:30:35ZengIEEEIEEE Access2169-35362020-01-01810902810903710.1109/ACCESS.2020.30013759113258Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode FiberJie Dong0https://orcid.org/0000-0002-7053-9840Mei Sang1Shuang Wang2Tianhua Xu3https://orcid.org/0000-0002-4920-7200Lei Yang4Yingdong Han5Fan Zhao6Tiegen Liu7School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin, ChinaRefractive index (RI) sensing is a promising technique in a variety of different scientific and industrial applications. In this paper, we theoretically and experimentally propose a newly-designed RI sensor. The proposed sensor consists of a particular long-period fiber grating inscribed in a two-mode fiber (LPFG-TMF) coated with tunable graphene oxide (GO), and the special structure allows an extremely high sensitivity in the transition region. The mode coupling between the LP11 core mode and the sixth-order cladding mode in the LPFG-TMF offers an apparently higher sensitivity feature. And the sensitivity is higher than that of a single-mode fiber-based LPFG (LPFG-SMF), which originates from the coupling between the core mode and the sixth-order cladding mode. Furthermore, the ultrasonic treatment time of GO, which impacts on the properties and performance of RI sensing, is also studied and investigated. Proof-of-concept results demonstrate significantly that comparing with the bare LPFG-TMF (621.66 nm/RIU) and LPFG-SMF coated with GO ultra-sonicated 5 hours (323.68nm/RIU), the LPFG-TMF coated with GO ultra-sonicated 5 hours performs optimized sensitivity of 11605.79 nm/RIU when surrounding RI ranges from 1.4558 to 1.4577. With its premium ability to operate high-sensitivity measurements, the RI sensing is expected to be useful for broad applications across the chemical fields.https://ieeexplore.ieee.org/document/9113258/Graphene oxidelong-period fiber gratingrefractive index measurementtwo-mode fiber |
| spellingShingle | Jie Dong Mei Sang Shuang Wang Tianhua Xu Lei Yang Yingdong Han Fan Zhao Tiegen Liu Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber IEEE Access Graphene oxide long-period fiber grating refractive index measurement two-mode fiber |
| title | Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber |
| title_full | Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber |
| title_fullStr | Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber |
| title_full_unstemmed | Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber |
| title_short | Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber |
| title_sort | refractive index sensor based on graphene oxide coated long period fiber grating inscribed in a two mode fiber |
| topic | Graphene oxide long-period fiber grating refractive index measurement two-mode fiber |
| url | https://ieeexplore.ieee.org/document/9113258/ |
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