3D Structures on Fiber Tip
Microoptics is one of the applications for 3D laser lithography. This technology is unique in that micro‑optics can be directly printed on top of functional devices, avoiding the assembly step. In this picture, the microlens with a diameter of 50 µm is fabricated on top of the fiber. The 3D supports ensure a required 250 µm distance between the fiber tip and the lens. Such integrated optical components enable the visualization or filtering of optical signals. Possible application areas can be found in miniaturized sensing technologies.