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机械感生长周期光纤光栅的可调谐环形光纤激光器

Tunable ring fiber laser using mechanical-induced long-period fiber grating

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摘要

将采用机械感生法写制的长周期光纤光栅 (MLPFG) 串入环形腔中,设计了一种新颖的L波段可调谐环形掺铒光纤激光器 (EDFL)。抽运光源为980 nm半导体激光器,使用掺铒浓度为5×10-4,长度为12 m的铒纤作为增益介质,通过调整待写制光纤与周期性压力槽之间的夹角,改变MLPFG的写制周期,调谐MLPFG透射谱,进而影响环形腔增益最高点,光纤激光器波长可调谐范围可达42 nm (1 562.465~1 604.280 nm),激光光谱3 dB带宽<0.04 nm, 20 dB带宽<0.08 nm,边模抑制比>45 dB。长时间观测表明,激光功率稳定性优于0.2 dBm。实验显示,该光纤激光器具有带宽较宽,线宽较窄及性能稳定等特点。

Abstract

A tunable L-band ring Er3+-doped Fiber Laser (EDFL) with Mechanically-induced Long-period Fiber Grating (MLPFG) is reported,in which a 980 nm Laser Diode (LD) is used as pump source, and a 5×10-4 highly Er3+ -doped fiber is used as its gain medium. The optical fiber laser with a wavelength-tunable range of 42 nm(1 562.465-1 604.280 nm)is achieved by adjusting MLPFG fabricated period and altering the angle between fiber and grooved pressure plat. The 3 dB line-width and the 20dB line-width of the laser are less than 0. 04 nm and 0.08 nm respectively, while the Side Mode Suppression Ratio (SMSR) is more than 45 dB. Moreover, the power stability of the laser is better than 0.2 dBm for a prolonged observation. Experimental results show that the tunable EDFL has advantages of wide bandwidth, narrow line-width and stable performance.

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中图分类号:TN248.1;TN253

所属栏目:现代应用光学

基金项目:山东省自然科学基金资助项目(No.Z2006G06);山东省中青年科学家奖励基金资助项目 (No.2006BS01001)

收稿日期:2009-10-15

修改稿日期:2009-08-11

网络出版日期:0001-01-01

作者单位    点击查看

姜明顺:山东大学 控制科学与工程学院 光纤传感技术研究中心, 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 光纤传感技术研究中心, 山东 济南 250061

联系人作者:姜明顺(mingshunjiang@yahoo.com)

备注:姜明顺(1981-),男,山东泰安人,博士研究生,主要从事光电子技术,光纤传感器,光纤通讯等方面的研究。

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引用该论文

JIANG Ming-shun,FENG De-jun,SUI Qing-mei. Tunable ring fiber laser using mechanical-induced long-period fiber grating[J]. Optics and Precision Engineering, 2010, 18(2): 311-316

姜明顺,冯德军,隋青美. 机械感生长周期光纤光栅的可调谐环形光纤激光器[J]. 光学 精密工程, 2010, 18(2): 311-316

被引情况

【1】石胜辉,赵明富,罗彬彬,汤 斌,陈立功. 扭转螺旋型力学微弯长周期光纤光栅的光谱特性. 光学 精密工程, 2017, 25(7): 1771-1776

【2】贺 超,廖同庆,吴 昇,魏小龙. 可调谐窄带宽的负系数微波光子滤波器. 红外与激光工程, 2017, 46(9): 920003--1

【3】石俊凯,王国名,纪荣祎,周维虎. 结构紧凑的双波长连续波掺铒光纤激光器. 中国光学, 2019, 12(4): 810-819

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