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应用800 nm飞秒激光制备长周期光纤光栅

Inscription of long period fiber gratings using 800 nm femtosecond laser

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摘要

利用800 nm钛蓝宝石飞秒激光器制备了长周期光纤光栅,并实验验证了长周期光纤光栅的高温特性。基于摄像头和电动位移平台设计了激光精确对准光纤纤芯的方案;以计算机控制1.3 mW飞秒激光,使用逐点曝光法在未经载氢处理的光纤上刻写了长周期光纤光栅,实验显示该光栅在1 200~1 700 nm波段的主谐振峰值可达-17 dB。利用高温箱对长周期光纤光栅进行高温传感特性实验,在300~800 ℃得到的主谐振峰温度响应灵敏度为0.056 nm/℃,线性度为0.992。实验结果表明,提出的以800 nm钛蓝宝石飞秒激光器制备长周期光纤光栅的方法稳定可靠,写制的光栅在高温环境下变化均匀,不易退化,响应特性良好,适用于高温检测。

Abstract

Long Period Fiber Gratings(LPFGs) were inscribed by using a 800 nm femtosecond laser and their high-temperature properties were verified in this paper. Firstly, an inscription system for the laser into fiber cores was designed using a camera and an electric moving platform. With controlling a pulse laser of 1.3 mW, a LPFG was inscribed in a non-hydrogen-loaded bare fiber using point by point technique, and the resonant peak of the LPFG is about -17 dB in the 1 200~1 700 nm band. Then, high temperature sensing experiments were performed on the LPFG by a high temperature box, obtained results show that the linearity of the resonance peak changes is about 0.992 and temperature sensitivity is 0.056 nm/℃ at 300-800 ℃. It demonstrates that the inscription technology for LPFGs by using the 800 nm femtosecond laser is feasible and obtained LPFGs have good response characteristics and stability, and are suitable for the high-temperature measurement.

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中图分类号:TN305.7;TN253

DOI:10.3788/ope.20122004.0685

所属栏目:现代应用光学

基金项目:国家自然科学基金资助项目(No.61074163);山东省高校科研发展计划资助项目(No.J10LA54)

收稿日期:2011-10-19

修改稿日期:2011-12-12

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作者单位    点击查看

苗飞:山东大学 控制科学与工程学院, 山东 济南 250061
张玲:山东大学 控制科学与工程学院, 山东 济南 250061
冯德军:山东大学 信息科学与工程学院, 山东 济南 250100
隋青美:山东大学 控制科学与工程学院, 山东 济南 250061
陈霄:山东大学 控制科学与工程学院, 山东 济南 250061
贾磊:山东大学 控制科学与工程学院, 山东 济南 250061
刘汉平:德州学院 物理系, 山东 德州 253023
刘辉兰:德州学院 物理系, 山东 德州 253023

联系人作者:苗飞(philotack@163.com)

备注:苗飞(1979-),男,山东淄博人,博士研究生,2003年于东南大学获得学士学位,主要从事光电子技术,光纤传感技术等方面的研究。

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引用该论文

MIAO Fei,ZHANG Ling,FENG De-jun,SUI Qing-mei,CHEN Xiao,JIA Lei,LIU Han-ping,LIU Hui-lan. Inscription of long period fiber gratings using 800 nm femtosecond laser[J]. Optics and Precision Engineering, 2012, 20(4): 685-691

苗飞,张玲,冯德军,隋青美,陈霄,贾磊,刘汉平,刘辉兰. 应用800 nm飞秒激光制备长周期光纤光栅[J]. 光学 精密工程, 2012, 20(4): 685-691

被引情况

【1】李文萃,王世文,张勇,宣丽. 低散射非偏振依赖的聚合物/液晶光栅. 应用光学, 2014, 35(3): 489-493

【2】郑文宁,祝连庆,庄炜,辛璟焘. 电极放电对光纤光栅光谱特性的影响. 中国激光, 2016, 43(7): 706003--1

【3】李达,何巍,闫光,祝连庆. 飞秒直写长周期光纤光栅及其液体折射率特性研究. 半导体光电, 2017, 38(3): 325-329

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