A Novel Dual-Wavelength DFB Fiber Laser Based on Symmetrical FBG Structure
A Novel Dual-Wavelength DFB Fiber Laser Based on Symmetrical FBG Structure
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DOI：
10.1109/lpt.2007.894940
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发表时间：
2007-05
影响因子：
2.6
通讯作者：
Xueming Liu
中科院分区：
文献类型：
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作者：
Xueming Liu
提出了一种新的光栅结构，并证明了在室温下获得稳定的双波长（DW）分布反馈（DFB）光纤激光器。所提出的光栅是基于一个对称的结构，其中一半是周期性采样的“0”到“π”周期和另一半是完成的“π”到“0”周期。这种结构可以产生两个分离的谐振腔，从而实现稳定的DW激光操作。通过在Er：Yb共掺光纤上制作这种光栅，我们在室温下获得了波长间隔约为440 pm的稳定的DW-DFB光纤激光器
A novel grating structure is proposed and demonstrated to obtain stable dual-wavelength (DW) distributed-feedback (DFB) fiber lasers at room temperature. The proposed grating is based on a symmetrical structure, where one half is periodically sampled by "0"-to-"pi" period and the other half is done by "pi"-to-"0" period. This structure can create two separated resonance cavities and hence achieve the stable DW lasing operation. By fabricating the proposed grating on a piece of Er : Yb-codoped fiber, we experimentally obtain a stable DW-DFB fiber laser with wavelength spacing of ~440 pm at room temperature