激光与光电子学进展, 2017, 54 (6): 061406, 网络出版: 2017-06-08   

双折射光纤布拉格光栅的飞秒激光制备与传感性能 下载: 611次

Femtosecond Laser Fabrication and Sensing Performance of Birefringence Fiber Bragg Gratings
作者单位
1 吉林大学电子科学与工程学院集成光电子学国家重点实验室, 吉林 长春 130012
2 中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室, 吉林 长春 130033
摘要
应用飞秒激光直写技术刻写了熊猫型双折射光纤布拉格光栅(PF-FBG)。飞秒激光直写技术是将激光焦点聚集到光纤纤芯位置,曝光过程中匀速移动光纤,最终得到周期性的折射率调制区域。PF-FBG具有双折射特性,在波长为1550 nm附近可以得到具有双峰的反射谱结构,因此可用于多传感参数的监控。研究了PF-FBG的温度和轴向应力的传感特性。PF-FBG兼具飞秒激光诱导光栅结构的高温稳定性,在苛刻环境下化学、物理传感方面具有潜在的应用价值。
Abstract
A panda-type birefringence fiber Bragg grating (PF-FBG) is fabricated by femtosecond laser direct writing technique. To get the grating, the femtosecond laser is focused into optical fiber core. During the process of exposure, the optical fiber is moved at a constant speed. Finally, a periodic refractive index modulation area is obtained. Because of the birefringence characteristics of PF-FBG, the reflection spectrum with two peaks is generated at 1550 nm wavelength. As a result, it can be used in multi-parameter sensing monitoring. The sensing properties of temperature and axial stress of the PF-FBG are studied. Besides, the femtosecond laser induced grating shows a good stability in high temperature, and shows potential applications in chemical and physical sensing under harsh circumstances.
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孟爱华, 崔丁元, 张轩宇, 陈超, 于永森. 双折射光纤布拉格光栅的飞秒激光制备与传感性能[J]. 激光与光电子学进展, 2017, 54(6): 061406. Meng Aihua, Cui Dingyuan, Zhang Xuanyu, Chen Chao, Yu Yongsen. Femtosecond Laser Fabrication and Sensing Performance of Birefringence Fiber Bragg Gratings[J]. Laser & Optoelectronics Progress, 2017, 54(6): 061406.

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