Temperature Dependence of Absorption and Emission Cross Sections in Erbium-Doped Fibers

Hongjie, 徐宏杰 Xu; Saihui, 杜赛辉 Du

doi:10.3788/lop51.100601

Cited by 1 publication

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“…The other is the change in the absorption coefficient of Er3+. If the wavelength of Er3+ was <1536 nm, the loss coefficient decreased, and the intensity of the radiated fluorescence increased 23 . Thus, the fluorescence intensity of the band increased.…”

Section: Resultsmentioning

confidence: 99%

“…The other is that the loss coefficient increased with temperature at wavelengths >1536 nm. 23 The probability of Er 3þ nonradiative transition increased with temperature, resulting in attenuation of fluorescence intensity. Therefore, the fluorescence intensity at 1560 to 1590 nm decreased.…”

Section: Methodsmentioning

confidence: 99%

“…At low temperatures, the energy level with lower energy in the first ES of Er 3þ was more occupied, resulting in increased luminescence intensity. The other is that the loss coefficient increased with temperature at wavelengths >1536 nm 23. The probability of Er 3þ nonradiative transition increased with temperature, resulting in attenuation of fluorescence intensity.…”

mentioning

confidence: 99%

“…The other is the change in the absorption coefficient of Er 3þ . If the wavelength of Er 3þ was <1536 nm, the loss coefficient decreased, and the intensity of the radiated fluorescence increased 23. Thus, the fluorescence intensity of the band increased.For the downward trend of 1560 to 1590 nm, there are two main reasons.…”

mentioning

confidence: 99%

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Optical fiber temperature sensor based on the fluorescence intensity ratio of bismuth–erbium co-doped optical fiber

et al. 2022

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. In our work, the temperature sensing properties and intrinsic mechanism based on a bismuth–erbium co-doped optical fiber (BEDF) were explored. Through temperature sensing experiments, we found that when the 980-nm pump laser was used, the fluorescence intensity ratio (FIR) at 1560 and 1435 nm showed a good linear relationship at different temperatures and its sensitivity reached 0.1151 dB/°C, the accuracy was 0.2°C, and the R2 of the FIR curve is about 0.9923. At the same time, we also proposed a detection algorithm to judge the working state of the sensor. By changing the BEDF coating material while the fiber is being fabricated, the temperature measurement range can be further improved. The optical fiber temperature sensor will have a broader range of applications.

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