光子学报, 2009, 38 (1): 91, 网络出版: 2010-05-10
飞秒激光加工光子晶体光纤微型F-P传感器研究
Photonic Crystal Fiber Fabry-Perot Sensor Fabricated Using Femtosecond Laser
飞秒激光加工 光纤应变传感器 非本征型光纤F-P传感器 光子晶体光纤 Femtosecond laser micromachining Fiber-optic strain sensor Fiber Fabry-Perot cavity Photonic crystal fiber
摘要
利用飞秒激光脉冲在光子晶体光纤上熔切出微小矩形孔从而构成光纤法珀干涉腔,并对这种传感器进行了实验测试,在0~1 500 με的应变范围内,干涉条纹波长相对于应变的灵敏度为0.003 6 nm/με,线性度达0.998 9.在-20 ℃~100 ℃其温度系数为0.958 nm/℃.利用飞秒激光在光纤上加工F-P腔方法简单,能够实现光纤F-P腔的规模化批量制造.
Abstract
A micro fiber-optic Fabry-Perot sensor was fabricated by using femtosecond laser micromachining in a photonic crystal fiber.The temperature and strain characteristics of the novel sensor were evaluated by experiment and a strain sensitivity of 0.003 6 nm/and a linearity of 0.998 9 for a strain range of 0~ 1 500 were obtained.The temperature-to-cavity-length sensitivity is 0.958 nm/℃ for a temperature range of -20 ℃~100 ℃.As this PCF F-P sensor can be mass-produced by simply using a femtosecond laser,it is anticipated that it can find wide applications in many fields.
饶云江, 段德稳, 杨晓辰, 邓明, 朱涛, 程光华, 李明. 飞秒激光加工光子晶体光纤微型F-P传感器研究[J]. 光子学报, 2009, 38(1): 91. RAO Yun-jiang, DUAN De-wen, YANG Xiao-chen, DENG Ming, ZHU Tao, CHENG Guang-hua, LI Ming. Photonic Crystal Fiber Fabry-Perot Sensor Fabricated Using Femtosecond Laser[J]. ACTA PHOTONICA SINICA, 2009, 38(1): 91.