Zhang Wenyan, Zhan Li, Xian Tianhao, Gao Lirun
Opt Lett. 2019 Aug 15;44(16):4008-4011. doi: 10.1364/OL.44.004008.
Bidirectional mode-locked lasers are very useful in laser sensing and optical communications. Here we report a bidirectional domain wall soliton (DWS) fiber laser with an anomalous dispersion cavity. Two mode-locked dark pulse trains propagating in the opposite directions have been generated. Moreover, the specific application as a gyroscopic effect has been demonstrated by mounting this DWS laser on a rotating platform. The beat frequency of the two dark pulse DWS beams is measured as a linear function of the rotation velocity. The rotation sensitivity reaches 3.31 kHz/(deg/s), which are comparable with the one in a bright pulse laser gyroscope. Without the limit of using tunable delay lines, the DWS laser gyroscope has the advantages of simple structure, high sensitivity, and low cost, while possessing the entire superiority of a mode-locked laser gyroscope. It is more promising for the applications in modern inertia navigation systems.
双向锁模激光器在激光传感和光通信中非常有用。在此，我们报道了一种具有反常色散腔的双向畴壁孤子（DWS）光纤激光器。已产生了沿相反方向传播的两个锁模暗脉冲序列。此外，通过将这种DWS激光器安装在旋转平台上，已证明了其作为陀螺效应的具体应用。测量了两个暗脉冲DWS光束的拍频作为旋转速度的线性函数。旋转灵敏度达到3.31 kHz/（度/秒），与亮脉冲激光陀螺仪中的灵敏度相当。DWS激光陀螺仪不受使用可调延迟线的限制，具有结构简单、灵敏度高和成本低的优点，同时具备锁模激光陀螺仪的所有优势。它在现代惯性导航系统中的应用更具前景。
