The VOA is made by an optical fiber collimator and a deformable mirror.Due to the defocus effect, the optical power could be adjusted by controlling the curvature of the deformable mirror.

• 我们的光衰减器是由光纤准直器与可形变的光学薄膜所组成，而光能量的衰减是藉由改变面镜的曲率进而改变聚焦点的位置所达成。