Zhang Qianqian, Fan Zhiyuan, Zhang Jianping, Zhang Fengbo, Zhang Qiang, Li Yongmin
Appl Opt. 2020 Oct 1;59(28):8959-8963. doi: 10.1364/AO.402999.
We proposed and demonstrated a method to fabricate ultrashort all-fiber Fabry-Perot interferometers by splicing a standard single-mode fiber and another single-mode fiber with a concave surface constructed by a laser pulse. The geometric parameters of the concave surface could be controlled flexibly by adjusting the laser pulse and the relative position between the laser beam and the optical fiber. In our experiments, the minimum depth of the concave surfaces is 0.12 µm, which offers a means of fabricating an all-fiber Fabry-Perot interferometer with submicrometer cavity length. Moreover, the ultralow-roughness concave surface fabricated by a laser pulse is beneficial to improve the fringe visibility of the interferometer. These advantages make it attractive for practical applications.
我们提出并演示了一种通过将标准单模光纤与另一种通过激光脉冲构建的具有凹面的单模光纤进行熔接来制造超短全光纤法布里-珀罗干涉仪的方法。通过调整激光脉冲以及激光束与光纤之间的相对位置，可以灵活地控制凹面的几何参数。在我们的实验中，凹面的最小深度为0.12 µm，这提供了一种制造腔长为亚微米级的全光纤法布里-珀罗干涉仪的方法。此外，由激光脉冲制造的超低粗糙度凹面对提高干涉仪的条纹可见度是有益的。这些优点使其在实际应用中具有吸引力。
