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A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement
Weihao Lin; yibin Liu; Li-Yang Shao; Mang I Vai
2022-05
Source PublicationMicromachines
Abstract

We demonstrate a highly sensitive and practical fiber-based temperature sensor system. The sensor is constructed based on a fiber ring laser (FRL) as well as a side-polished fiber filled with isopropanol. The laser cavity of the sensing part fiber is polished by the wheel fiber polishing system with residual thickness (RT) is selected to detect the temperature in the FRL. Thanks to the high thermo-optic coefficient of isopropanol, the sensitivity of the proposed temperature sensor could be effectively improved by filling isopropanol in the cost-less side polished single mode fiber. Refractive index (RI) of isopropanol changes with the surrounding temperature variation allowing high-sensitivity temperature sensing. Experimental results demonstrate that the side polished fiber can efficiently excite high-order cladding modes which enhance the modular interference increase the interaction between the evanescent wave and the isopropanol. Besides, the results show that the sensitivity can be as high as 2 nm/°C in the temperature range of 25–35 °C.

Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics
WOS SubjectChemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied
WOS IDWOS:000662393500001
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Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorLi-Yang Shao
Affiliation1.University of Macau
2.Southern University of Science and Technology
3.Southern University of Science and Technology
4.University of Macau
Recommended Citation
GB/T 7714
Weihao Lin,yibin Liu,Li-Yang Shao,et al. A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement[J]. Micromachines,2022.
APA Weihao Lin,yibin Liu,Li-Yang Shao,&Mang I Vai.(2022).A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement.Micromachines.
MLA Weihao Lin,et al."A fiber ring laser sensor with a side polished evanescent enhanced fiber for highly sensitive temperature measurement".Micromachines (2022).
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