Random Raman Fiber Laser as a Liquid Refractive Index Sensor
Abstract In this paper, a new concept of forward-pumped random Raman fiber laser (RRFL)-based liquid refractive index sensing is proposed for the first time. For liquid refractive index sensing, the flat fiber end immersed in the liquid can act as the point reflector for generating random fiber lasi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-12-01
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| Series: | Photonic Sensors |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13320-023-0697-6 |
| _version_ | 1826983828757938176 |
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| author | Bing Han Yuxi Ma Han Wu Yong Zhao |
| author_facet | Bing Han Yuxi Ma Han Wu Yong Zhao |
| author_sort | Bing Han |
| collection | DOAJ |
| description | Abstract In this paper, a new concept of forward-pumped random Raman fiber laser (RRFL)-based liquid refractive index sensing is proposed for the first time. For liquid refractive index sensing, the flat fiber end immersed in the liquid can act as the point reflector for generating random fiber lasing and also as the sensing head. Due to the high sensitivity of the output power of the RRFL to the reflectivity provided by the point reflector in the ultralow reflectivity regime, the proposed RRFL is capable of achieving liquid refractive index sensing by measuring the random lasing output power. We theoretically investigate the effects of the operating pump power and fiber length on the refractive index sensitivity for the proposed RRFL. As a proof-of-concept demonstration, we experimentally realize high-sensitivity half-open short-cavity RRFL-based liquid refractive index sensing with the maximum sensitivity and the sensing resolution of–39.88W/RIU and 2.5075×10−5 RIU, respectively. We also experimentally verify that the refractive index sensitivity can be enhanced with the shorter fiber length of the RRFL. This work extends the application of the random fiber laser as a new platform for highly-sensitive refractive index sensing in chemical, biomedical, and environmental monitoring applications, etc. |
| first_indexed | 2024-03-09T05:53:17Z |
| format | Article |
| id | doaj.art-797e5258f1ca47febb515fa595d7825d |
| institution | Directory Open Access Journal |
| issn | 1674-9251 2190-7439 |
| language | English |
| last_indexed | 2025-02-18T06:43:27Z |
| publishDate | 2023-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Photonic Sensors |
| spelling | doaj.art-797e5258f1ca47febb515fa595d7825d2024-11-10T12:13:45ZengSpringerOpenPhotonic Sensors1674-92512190-74392023-12-0114111010.1007/s13320-023-0697-6Random Raman Fiber Laser as a Liquid Refractive Index SensorBing Han0Yuxi Ma1Han Wu2Yong Zhao3College of Information Science and Engineering, Northeastern UniversityCollege of Information Science and Engineering, Northeastern UniversityCollege of Electronics and Information Engineering, Sichuan UniversityCollege of Information Science and Engineering, Northeastern UniversityAbstract In this paper, a new concept of forward-pumped random Raman fiber laser (RRFL)-based liquid refractive index sensing is proposed for the first time. For liquid refractive index sensing, the flat fiber end immersed in the liquid can act as the point reflector for generating random fiber lasing and also as the sensing head. Due to the high sensitivity of the output power of the RRFL to the reflectivity provided by the point reflector in the ultralow reflectivity regime, the proposed RRFL is capable of achieving liquid refractive index sensing by measuring the random lasing output power. We theoretically investigate the effects of the operating pump power and fiber length on the refractive index sensitivity for the proposed RRFL. As a proof-of-concept demonstration, we experimentally realize high-sensitivity half-open short-cavity RRFL-based liquid refractive index sensing with the maximum sensitivity and the sensing resolution of–39.88W/RIU and 2.5075×10−5 RIU, respectively. We also experimentally verify that the refractive index sensitivity can be enhanced with the shorter fiber length of the RRFL. This work extends the application of the random fiber laser as a new platform for highly-sensitive refractive index sensing in chemical, biomedical, and environmental monitoring applications, etc.https://doi.org/10.1007/s13320-023-0697-6Fiber optic sensorsrefractive index measurementsfiber lasersRayleigh scatteringstimulated Raman scattering |
| spellingShingle | Bing Han Yuxi Ma Han Wu Yong Zhao Random Raman Fiber Laser as a Liquid Refractive Index Sensor Photonic Sensors Fiber optic sensors refractive index measurements fiber lasers Rayleigh scattering stimulated Raman scattering |
| title | Random Raman Fiber Laser as a Liquid Refractive Index Sensor |
| title_full | Random Raman Fiber Laser as a Liquid Refractive Index Sensor |
| title_fullStr | Random Raman Fiber Laser as a Liquid Refractive Index Sensor |
| title_full_unstemmed | Random Raman Fiber Laser as a Liquid Refractive Index Sensor |
| title_short | Random Raman Fiber Laser as a Liquid Refractive Index Sensor |
| title_sort | random raman fiber laser as a liquid refractive index sensor |
| topic | Fiber optic sensors refractive index measurements fiber lasers Rayleigh scattering stimulated Raman scattering |
| url | https://doi.org/10.1007/s13320-023-0697-6 |
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