Mihailov Stephen J, Hnatovsky Cyril, Abdukerim Nurmemet, Walker Robert B, Lu Ping, Xu Yanping, Bao Xiaoyi, Ding Huimin, De Silva Manny, Coulas David, Grobnic Dan
National Research Council Canada, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada.
Infinera Canada Inc., 555 Legget Dr., Ottawa, ON K2K 2X3, Canada.
Sensors (Basel). 2021 Feb 19;21(4):1447. doi: 10.3390/s21041447.
A review of recent progress in the use of infrared femtosecond lasers to fabricate optical fiber sensors that incorporate fiber Bragg gratings (FBG) and random fiber gratings (RFG) is presented. The important advancements in femtosecond laser writing based on the phase mask technique now allow through-the-coating (TTC) fabrication of Bragg gratings in ultra-thin fiber filaments, tilted fiber Bragg gratings, and 1000 °C-resistant fiber Bragg gratings with very strong cladding modes. As an example, through-the-coating femtosecond laser writing is used to manufacture distributed fiber Bragg grating sensor arrays for oil pipeline leak detection. The plane-by-plane femtosecond laser writing technique used for the inscription of random fiber gratings is also reviewed and novel applications of the resultant devices in distributed temperature sensing, fiber lasers and fiber laser sensors are discussed.
本文综述了利用红外飞秒激光制造包含光纤布拉格光栅（FBG）和随机光纤光栅（RFG）的光纤传感器的最新进展。基于相位掩模技术的飞秒激光写入的重要进展，现在允许在超薄光纤细丝中进行布拉格光栅的穿涂层（TTC）制造、倾斜光纤布拉格光栅以及具有非常强包层模式的耐1000°C光纤布拉格光栅。例如，穿涂层飞秒激光写入用于制造用于石油管道泄漏检测的分布式光纤布拉格光栅传感器阵列。还综述了用于写入随机光纤光栅的逐平面飞秒激光写入技术，并讨论了所得器件在分布式温度传感、光纤激光器和光纤激光传感器中的新应用。
