Widely tunable wavelength spacing dual-wavelength single longitudinal mode erbium doped fiber laser

被引：20
作者：
Sun, Tiegang [1 ]
Guo, Yubin [1 ]
Wang, Tianshu [2 ]
Huo, Jiayu [1 ]
Zhang, Le [1 ]
机构：
[1] Jilin Univ, Coll Commun Engn, Changchun 130012, Peoples R China
[2] Changchun Univ Sci & Technol, Inst Space Photoelect Technol, Changchun 130022, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2014年 / 20卷 / 03期
关键词：
Dual-wavelength fiber laser; Single longitudinal mode; Erbium doped fiber laser; Birefringent fiber filter; PHOTONIC GENERATION; NARROW-LINEWIDTH;
D O I：
10.1016/j.yofte.2014.02.006
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A simple widely tunable wavelength spacing dual-wavelength single longitudinal mode (SLM) erbium doped fiber laser (EDFL) based on cascaded fiber Bragg gratings (FBGs) and birefringent fiber filter is proposed and demonstrated. Experimental results show that the lasing wavelength spacing is widely tunable in a range from 2 nm to 18 nm, which has potential to generate frequency tunable terahertz (THz) waves by beating the lasing dual-wavelength in a high speed photodetector. The birefringent fiber filter acts as an ultra-narrow bandpass filter and benefits the simultaneous oscillation of dual-wavelength in a single laser cavity. The output peak power of the lasing dual-wavelength is approximately equalized at room temperature, and a high optical signal-to-noise ratio (OSNR) is realized in the whole tuning range. The SLM operation of dual-wavelength fiber laser is verified by Fabry-Perot (F-P) scanning interferometer, and the clear eye diagram proves that the proposed fiber laser is effective in the application of fiber optic communication system. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：235 / 238
页数：4
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