Wavelength-Spacing Switchable Dual-Wavelength Single Longitudinal Mode Thulium-Doped Fiber Laser at 1.9 μm

被引：29
|
作者：
Ma, Wanzhuo [1 ]
Wang, Tianshu [2 ]
Su, Yuwei [3 ]
Zhang, Yan [3 ]
Liu, Peng [3 ]
Jia, Qingsong [1 ]
Zhang, Peng [2 ]
Jiang, Huilin [2 ]
机构：
[1] Changchun Univ Sci & Technol, Coll Optoelect Engn, Changchun 130022, Peoples R China
[2] Changchun Univ Sci & Technol, Natl & Local Joint Engn Res Ctr Space Optoelect T, Changchun 130022, Peoples R China
[3] Changchun Univ Sci & Technol, Coll Sci, Changchun 130022, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Fiber laser; dual-wavelength laser; stability; single longitudinal mode; MULTIWAVELENGTH; INTERFEROMETER; GENERATION;
D O I：
10.1109/JPHOT.2016.2616515
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：
We propose and demonstrate a spacing switchable dual-wavelength single longitudinal mode thulium-doped fiber laser at 1.9 mu m. The fiber laser employs a ring cavity and a segment of 4-m thulium-doped fiber pumped by a 1563 nm laser. A fiber Sagnac loop is used as a comb filter to generate a stable dual-wavelength laser. A multimode interference filter consisting of a single-mode-multimode-single-mode fiber and a rotary fiber squeezer is used to adjust the wavelength spacing. When pump power is fixed at 260 mW, a stable dual-wavelength laser at 1.9 mu m is obtained by adjusting the polarization controller in the Sagnac filter, and the wavelength spacing can be tuned from 6.7 to 26.7 nm by adjusting the rotary fiber squeezer in the multimode interference filter. Each wavelength of the dual-wavelength laser operates at a single longitudinal mode state, and the maximum linewidth is 7.5 MHz analyzed by a Fabry-Perot scanning interferometer.
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页数：8
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