期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 39, 期 11, 页码 3582-3590出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2021.3066676
关键词
Gratings; Fiber gratings; Annealing; Temperature sensors; Heating systems; Refractive index; Standards; Fiber bragg grating; high-temperature sensing; refractive index measurement; thermal regeneration; tilted fiber bragg grating
资金
- Research Program Charming [O001518F, EOS: 30467715]
- FNRS
Thermal regeneration of tilted Bragg gratings using UV lasers and different annealing profiles results in efficient regeneration in the temperature range of 850-900 degrees Celsius. The regenerated gratings show a sensitivity to the surrounding refractive index comparable to non-regenerated gratings.
We report on the thermal regeneration of tilted Bragg gratings (TFBGs) produced in hydrogen loaded SMF-28 optical fiber using two types of UV lasers: 266 nm femtosecond pulses and 193 nm nanosecond pulses. Different isochronal and isothermal annealing profiles are used to improve the regeneration of the cladding modes. Experimental results are in good agreement with simulation results. We show that TFBGs regenerate efficiently in the temperature range 850 degrees C - 900 degrees C when isothermal stepwise annealing profile is used. The regeneration efficiency of the cladding modes does not exceed 4.35%. The sensitivity to the surrounding refractive index is comparable to that of non-regenerated tilted Bragg gratings. These regenerated tilted Bragg gratings can be applied in several applications, like for example the follow up of high-temperature fabrication processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据