Gunawardena Dinusha Serandi, Law On Kit, Liu Zhengyong, Zhong Xiaoxuan, Ho Yuk-Ting, Tam Hwa-Yaw
Opt Express. 2020 Mar 30;28(7):10595-10608. doi: 10.1364/OE.375421.
We report for the first time the resurgence of regenerated fiber Bragg gratings (RFBGs) useful for ultra-high temperature measurements exceeding 1400 °C. A detailed study of the dynamics associated with grating regeneration in six-hole microstructured optical fibers (SHMOFs) and single mode fibers (SMFs) was conducted. Rapid heating and rapid cooling techniques appeared to have a significant impact on the thermal sustainability of the RFBGs in both types of optical fibers reaching temperature regimes exceeding 1400 °C. The presence of air holes sheds new light in understanding the thermal response of RFBGs and the stresses associated with them, which governs the variation in the Bragg wavelength.
我们首次报道了可用于超过1400°C的超高温测量的再生光纤布拉格光栅（RFBG）的复苏情况。对六孔微结构光纤（SHMOF）和单模光纤（SMF）中与光栅再生相关的动力学进行了详细研究。快速加热和快速冷却技术似乎对两种类型光纤中RFBG的热稳定性有重大影响，这些光纤可达到超过1400°C的温度范围。气孔的存在为理解RFBG的热响应及其相关应力提供了新的思路，这些应力决定了布拉格波长的变化。
