应用800 nm飞秒激光制备长周期光纤光栅

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.

参考文献

[1] 顾铮,张江涛. 基于双峰谐振效应的镀金属长周期光纤光栅液体浓度传感器［J］.光学学报, 2011, 31(3): 0305003-1-0305003-7.

GU ZH, ZHANG J T. Metal-coated long-period fiber grating liquid sensor based on dual-peak resonance［J］. Acta Optica Sinica, 2011,31(3):0305003-1-0305003-7. (in Chinese)

[2] LI Q SH,ZHANG X L,YU Y S, et al.. Enhanced sucrose sensing sensitivity of long period fiber grating by self-assembled polyelectrolyte multilayers［J］. Reactive and Functional Polymers，2011,71(3):335-339.

[3] 胡兴柳,梁大开,陆观,等. 基于单长周期光纤光栅光谱特性的温度和应变同时区分测量［J］.光谱学与光谱分析,2010,30(3):851-854.

HU X L,LIANG D K,LU G, et al.. Simultaneous discriminating measurement of temperature and strain based on a long period grating's spectrum［J］. Spectroscopy and Spectral Analysis,2010,30(3):851-854. (in Chinese)

[4] 张志荣, 张冠茂, 张晓萍.长周期光纤光栅应变和温度传感灵敏度研究［J］.光子学报，2009,38(1):103-106.

ZHANG ZH R,ZHANG G M,ZHANG X P. Strain and temperature sensitivities of long period fiber grating［J］. Acta Photonica Sinica, 2009,38(1):103-106. (in Chinese)

[5] JIANG M SH,FENG D J,SUI Q M. Characteristic research on mechanically induced long-period fiber gratings［J］. Chinese Optics Letters,2009,7(2):112-114.

[6] ZHU Y N,PING SH,BAY H W, et al.. Strain-insensitive and high-temperature long-period gratings inscribed in photonic crystal fiber［J］. Optics Letters, 2005,30(4):367-369.

[7] 龚小竞, 褚家如, 王翔,等.飞秒激光多次聚焦在并行加工中的应用［J］.光学精密工程,2008, 16(1):48-54.

GONG X J, CHU J R, WANG X,et al.. Application of femtosecond laser multi-focusing to parallel fabrication［J］. Opt. Precision Eng., 2008, 16(1):48-54.(in Chinese)

[8] 龚小竞,褚家如,杨建军,等.改进的飞秒激光加工微型光波导方法［J］.光学精密工程,2007,15(1):27-32.

GONG X J,CHU J R,YANG J J, et al.. An improved way for fabricating micro-waveguide by femtosecond laser［J］. Opt. Precision Eng., 2007,15(1):27-32. (in Chinese).

[9] FORSTER E. Bent crystal X-ray optics［J］. Opt. Precision Eng., 2007,15(12):1823-1828.

[10] 张帆,侯冬,郭海鹏,等. 光纤时间频率传输的时延抖动主动补偿［J］. 光学学报, 2010,30(3):671-675.

ZHANG F, HOU D, GUO H P, et al.. Timing delay jitter compensation of a fiber link with active delay compensation［J］. Acta Optica Sinica, 2010,30(3):671-675. (in Chinese)

[11] LIAO CH R,WANG Y,WANG D N,et al.. Femtosecond laser inscribed long-period gratings in all-solid photonic bandgap fibers［J］. Photonics Technology Letters,2010,22(6):425-427.

[12] TU H,SHIN S,JOHN R, et al.. Long-period fiber gratings spontaneously written by a mechanism markedly different from Hill grating formation［J］. Applied Physics Letters, 2010, 97(12):121104-1-1121104-3.

[13] NIKOGOSYAN D N. Long-period gratings in a standard telecom fibre fabricated by high-intensity femtosecond UV and near-UV laser pulses［J］. Measurement Science & Technology, 2006,17(5):960-967.

[14] O'REGANA B J,NIKOGOSYAN D N. Femtosecond UV long-period fibre grating fabrication with amplitude mask technique［J］. Optics Communications. OPTICS-16450,2011,8:35-39.

[15] MA J,JIN W,JIN L. Temperature characteristics of microfiber long-period-gratings fabricated by a femtosecond infrared laser［J］. SPIE, 2011,7753：77539J-1-4.

[16] LIU SH J,JIN W,JIN L, et al.. Fabrication of long-period fiber gratings by using of a femtosecond laser source［C］. Opto-Electronics and Communications Conference, 2009:1-2.

[17] EATON S,ZHANG H B, HERMAN P, et al.. Heat accumulation effects in femtosecond laser-written waveguides with variable repetition rate［J］. Optics Express, 2005,13(12):4708-4716.

[18] MARTINEZ A, DUBOV M, KHRUSHCHEV I, et al.. Photoinduced modifications in fiber gratings inscribed directly by infrared femtosecond irradiation［J］. Photonics Technology Letters, IEEE, 2006, 18(11):2266-2268.

[19] 张玲,苗飞, 冯德军,等.飞秒激光对光纤布拉格光栅的曝光实验研究［J］.中国激光,2011, 38(5):0505006-1-0505006-6.

ZHANG L, MIAO F, FENG D J, et al.. Exposure experiment study of fiber bragg grating by femtosecond laser［J］. Chinese Journal of Lasers,2011,38(5):0505006-1-0505006-6.(in Chinese)

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. 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.

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