Stable Dual-Wavelength Fibre Laser with Bragg Gratings Fabricated in a Polarization-Maintaining Erbium-Doped Fibre
Stable Dual-Wavelength Fibre Laser with Bragg Gratings Fabricated in a Polarization-Maintaining Erbium-Doped Fibre
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DOI：
10.1088/0256-307x/25/12/027
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发表时间：
2008-12
影响因子：
3.5
通讯作者：
Wang Lin;Yan Feng-ping;Mao Xiang-Qiao;Jian Shui-sheng
中科院分区：
文献类型：
--
作者：
Wang Lin;Yan Feng-ping;Mao Xiang-Qiao;Jian Shui-sheng
提出并实现了一种在保偏掺铒光纤（PM-EDF）中制作均匀光纤光栅（FBG）和啁啾光纤光栅（FBG）的偏振无关双波长光纤激光器。在泵浦功率为246 mW时，波长间隔为0.18nm，光信噪比大于50 dB。啁啾光纤光栅的使用，使两个PM-FBG的反射率波长更容易匹配。由于EDF和FBG都是偏振保持的，没有拼接，两个波长是偏振无关的，最大幅度变化和波长偏移为两个激射波长与3分钟的时间间隔超过6小时的时间分别小于0.2 dB和0.005 nm，这表明稳定的双波长输出。
A new polarization-independent dual-wavelength fibre laser by fabricating a uniform FBG and a chirped FBG in a polarization-maintaining erbium-doped fibre (PM-EDF) is proposed and demonstrated. The wavelength spacing is 0.18nm and the optical signal-to-noise ratio is greater than 50dB with pump power of 246mW. Chirped FBG is used to make the reflectivity wavelengths of two PM-FBGs match easier. Since both EDF and FBGs are polarization-maintaining without splices and the two wavelengths are polarization-independent, the maximum amplitude variation and wavelength shifts for both lasing wavelength with 3-min intervals over a period of six hours are less than 0.2 dB and 0.005 nm, respectively, which shows stable dual-wavelength output.