Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser
In this paper, an intra-cavity SPR sensor based on erbium-doped fiber (EDF) laser is proposed to achieve higher sensitivity for detecting analyte refractive indices. A liquid-core fiber-based SPR sensor is first designed to match the operating wavelength of 1530 nm in the fiber laser intra-cavity, a...
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IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10738214/ |
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| author | Ge Meng Nannan Luan Hao He Fan Lei Jianfei Liu |
| author_facet | Ge Meng Nannan Luan Hao He Fan Lei Jianfei Liu |
| author_sort | Ge Meng |
| collection | DOAJ |
| description | In this paper, an intra-cavity SPR sensor based on erbium-doped fiber (EDF) laser is proposed to achieve higher sensitivity for detecting analyte refractive indices. A liquid-core fiber-based SPR sensor is first designed to match the operating wavelength of 1530 nm in the fiber laser intra-cavity, and then placed into the cavity of the EDF laser to constitute the all-fiber intra-cavity SPR sensor. We theoretical investigate the influence of pump power, cavity loss and EDF length on the sensitivity of the proposed intra-cavity SPR sensor. The results indicate that the sensitivity of the intra-cavity SPR sensor can reach 1.051 × 10<sup>9</sup> RIU<sup>−1</sup> (refractive index unit), which is enhanced 4 × 10<sup>6</sup> times compared with the sensitivity of 253 RIU<sup>−1</sup> obtained by the SPR sensor without fiber laser cavity. In addition, the sensitivity of the proposed intra-cavity SPR sensor can be flexibly tuned by changing pump power, cavity loss or EDF length. This work demonstrates that as an alternative approach, the combination of the fiber laser intra-cavity spectroscopy and the fiber-based SPR sensor can achieve a remarkable enhancement in sensitivity. |
| format | Article |
| id | doaj-art-ddc54a4969b74f46b875c7a3fd6c7c98 |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-ddc54a4969b74f46b875c7a3fd6c7c982025-08-20T02:12:33ZengIEEEIEEE Photonics Journal1943-06552024-01-011661810.1109/JPHOT.2024.348797310738214Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber LaserGe Meng0https://orcid.org/0009-0008-8244-9886Nannan Luan1https://orcid.org/0000-0003-3305-2707Hao He2Fan Lei3Jianfei Liu4School of Electronics and Information Engineering, Hebei University of Technology, Tianjin, ChinaSchool of Electronics and Information Engineering, Hebei University of Technology, Tianjin, ChinaSchool of Electronics and Information Engineering, Hebei University of Technology, Tianjin, ChinaKey Laboratory of Natural Resources Monitoring and Supervision in Southern Hilly Region, Ministry of Natural Resources, Changsha, ChinaSchool of Electronics and Information Engineering, Hebei University of Technology, Tianjin, ChinaIn this paper, an intra-cavity SPR sensor based on erbium-doped fiber (EDF) laser is proposed to achieve higher sensitivity for detecting analyte refractive indices. A liquid-core fiber-based SPR sensor is first designed to match the operating wavelength of 1530 nm in the fiber laser intra-cavity, and then placed into the cavity of the EDF laser to constitute the all-fiber intra-cavity SPR sensor. We theoretical investigate the influence of pump power, cavity loss and EDF length on the sensitivity of the proposed intra-cavity SPR sensor. The results indicate that the sensitivity of the intra-cavity SPR sensor can reach 1.051 × 10<sup>9</sup> RIU<sup>−1</sup> (refractive index unit), which is enhanced 4 × 10<sup>6</sup> times compared with the sensitivity of 253 RIU<sup>−1</sup> obtained by the SPR sensor without fiber laser cavity. In addition, the sensitivity of the proposed intra-cavity SPR sensor can be flexibly tuned by changing pump power, cavity loss or EDF length. This work demonstrates that as an alternative approach, the combination of the fiber laser intra-cavity spectroscopy and the fiber-based SPR sensor can achieve a remarkable enhancement in sensitivity.https://ieeexplore.ieee.org/document/10738214/Optical fiber sensorsoptical sensorsfiber lasersintra-cavity absorptionrefractive index |
| spellingShingle | Ge Meng Nannan Luan Hao He Fan Lei Jianfei Liu Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser IEEE Photonics Journal Optical fiber sensors optical sensors fiber lasers intra-cavity absorption refractive index |
| title | Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser |
| title_full | Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser |
| title_fullStr | Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser |
| title_full_unstemmed | Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser |
| title_short | Investigation of Intra-Cavity SPR Sensor Based on Erbium-Doped Fiber Laser |
| title_sort | investigation of intra cavity spr sensor based on erbium doped fiber laser |
| topic | Optical fiber sensors optical sensors fiber lasers intra-cavity absorption refractive index |
| url | https://ieeexplore.ieee.org/document/10738214/ |
| work_keys_str_mv | AT gemeng investigationofintracavitysprsensorbasedonerbiumdopedfiberlaser AT nannanluan investigationofintracavitysprsensorbasedonerbiumdopedfiberlaser AT haohe investigationofintracavitysprsensorbasedonerbiumdopedfiberlaser AT fanlei investigationofintracavitysprsensorbasedonerbiumdopedfiberlaser AT jianfeiliu investigationofintracavitysprsensorbasedonerbiumdopedfiberlaser |