For an ellipsoid suspended in a dual-fiber optic trap with transverse offset, the optical force, torque and posture are theoretically analyzed. When importing a transverse offset between two fibers, in the water environment, the azimuthal angle between the long axis and the optical axis increases with the offset distance. In the vacuum environment, the ellipsoid will spin in the trap center. When the offset is great than the threshold, the ellipsoid will move around the trap center along an elliptic trajectory, accompanied with the spin motion. The results will contribute to better understanding of the spin motion in the transversely misaligned dual-beam fiber-optic trap.

中文翻译：

---

横向偏移双光束光纤阱中椭球的动力学分析

对于悬挂在具有横向偏移的双光纤陷阱中的椭球，理论上分析了光学力，扭矩和姿势。当在水环境中导入两根光纤之间的横向偏移时，长轴和光轴之间的方位角随偏移距离而增加。在真空环境中，椭球将在阱中心旋转。当偏移量大于阈值时，椭球将沿着椭圆形轨迹在陷阱中心周围移动，并伴有自旋运动。结果将有助于更好地理解横向未对准的双光束光纤阱中的自旋运动。