Switchable dual-wavelength erbium-doped fiber-ring laser based on one polarization maintaining fiber Bragg grating in a Sagnac loop interferometer
Switchable dual-wavelength erbium-doped fiber-ring laser based on one polarization maintaining fiber Bragg grating in a Sagnac loop interferometer
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DOI：
10.1016/j.optlastec.2008.06.006
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发表时间：
2009-04
影响因子：
5
通讯作者：
S. Feng;Ou Xu;Shaohua Lu;Xiangqiao Mao;T. Ning;S. Jian
中科院分区：
文献类型：
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作者：
S. Feng;Ou Xu;Shaohua Lu;Xiangqiao Mao;T. Ning;S. Jian
提出了一种在室温下实现双波长正交偏振输出的可开关环形腔掺铒光纤激光器。采用Sagnac环形干涉仪中的一个保偏光纤布拉格光栅作为波长选择滤波器。由于保偏光纤布拉格光栅对偏振烧孔效应的增强，通过调节偏振控制器（PC），激光器可以在室温下工作在波长间隔为0.336nm的稳定的双波长或波长切换模式。光信噪比（OSNR）大于42dB。90 min内两个波长的振幅变化均小于0.6dB。
A switchable erbium-doped fiber-ring laser providing dual-wavelength outputs with orthogonal polarizations when operating at room temperature is proposed. One polarization-maintaining fiber Bragg grating (PMFBG) in a Sagnac loop interferometer is used as the wavelength-selective filter. Due to the enhancement of the polarization hole burning (PHB) by the PMFBG, the laser can be designed to operate in stable dual-wavelength or wavelength-switching modes with a wavelength spacing of 0.336nm at room temperature by adjusting a polarization controller (PC). The optical signal-to-noise ratio (OSNR) is over 42dB. The amplitude variation over 90min is less than 0.6dB for both wavelengths.