A portable all-fiber thermometer based on the fluorescence intensity ratio (FIR) technique in rare earth doped TeO2–WO3–La2O3–Na2O glass. Issue 26 (25th June 2018)

• Record Type: Journal Article
• Authors: Tu, Yuyuan; Zhao, Shilong; He, Dongyang; Wu, Ting; Zhang, Hui; Lei, Ruoshan; Huang, Lihui; Xu, Shiqing
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 26(2018)
• Page Start: 7063
• Page End: 7069
• Publication Date: 2018-06-25
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc01940a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A portable all-fiber thermometer based on the fluorescence intensity ratio technique in Er 3+ /Yb 3+ co-doped TeO2 –WO3 –La2 O3 –Na2 O (TWLN) glass fiber was designed and its temperature sensing performance was determined. Abstract : A portable all-fiber thermometer based on the FIR technique in Er 3+ /Yb 3+ co-doped TeO2 –WO3 –La2 O3 –Na2 O (TWLN) glasses was designed and its temperature sensing performance in the temperature range of 293–569 K was determined in detail. The high glass transition temperature ( T g = 439 °C) of TWLN glass contributes to broadening the range of temperature measurement. The spectroscopic analysis of Eu 3+ ions and Judd–Ofelt analysis of Er 3+ ions reveal that the rare earth ions are situated in a low symmetry environment in TWLN glass, which suggests that a large FIR change and high temperature sensitivity are expected. Intense green upconversion emission in Er 3+ /Yb 3+ co-doped TWLN glass fiber was easily observed under 980 nm excitation at a low pumping power (1.4 mW). The maximum temperature sensitivity of the portable all-fiber thermometer reached 86.7 × 10 −4 K −1 at 553 K. Experimental results showed that the absolute errors were around ±1 K within the temperature range from 285 to 563 K.