Opt Lett. 2019 Nov 1;44(21):5145-5148. doi: 10.1364/OL.44.005145.
An optical fiber high-temperature sensor is proposed and demonstrated by use of cascaded multiple Fabry-Perot interferometers in no-core fiber with a waveguide fabricated by femtosecond laser pulse inscription. The device can sustain the high temperature up to 1100°C, and the temperature sensitivity obtained is 8.9 pm/°C within the temperature range 100°C-400°C, and 16.36 pm/°C within the temperature range 400°C-1100°C, respectively. Such a no-core fiber-based device can be fabricated in a simple way and operated reliably, which makes it attractive for extreme environment monitoring.
提出并演示了一种光纤高温传感器，该传感器利用飞秒激光脉冲写入制作的无芯光纤中的级联多法布里-珀罗干涉仪来实现。该器件可承受高达 1100°C 的高温，在 100°C-400°C 的温度范围内，其温度灵敏度为 8.9 pm/°C，在 400°C-1100°C 的温度范围内，其温度灵敏度为 16.36 pm/°C。这种基于无芯光纤的器件可以通过简单的方法制造，并可靠地运行，这使其在极端环境监测中具有吸引力。
