Highly sensitive temperature sensor based on an isopropanol-sealed optical microfiber coupler
Applied Physics Letters, ISSN: 0003-6951, Vol: 113, Issue: 11
2018
- 31Citations
- 14Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
A simple and highly sensitive temperature sensor based on an isopropanol-sealed optical microfiber coupler (OMC) is reported. Due to the high thermo-optic coefficient of isopropanol, the temperature sensitivity of the OMC can be effectively improved by immersing the OMC into isopropanol. The refractive index change of isopropanol is caused by the surrounding temperature variation which in turn allows highly sensitive temperature sensing. Theoretical analysis demonstrates that the temperature sensitivity increases quickly with the decreasing OMC waist diameter. Temperature sensitivities at different waist diameters exhibit high consistency with the theoretical results. When used for temperature sensing, the transmission spectrum blueshifts as the surrounding temperature increases. The highest sensitivity of −5.89 nm/°C is achieved at the waist diameter of 2.2 μm. This is the most sensitive OMC based temperature sensing device reported so far. Such a compact size, low cost, and highly sensitive device may widen the application range of OMC.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85053334358&origin=inward; http://dx.doi.org/10.1063/1.5049558; https://pubs.aip.org/apl/article/113/11/111901/35834/Highly-sensitive-temperature-sensor-based-on-an; http://aip.scitation.org/doi/10.1063/1.5049558; https://aip.scitation.org/doi/10.1063/1.5049558
AIP Publishing
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