The properties and characteristics of an optical fiber can be modified by a special manufacturing process resulting in so-called shaped fibers. The following core products are currently available:
This product is primarily used in medical technology. Here the fiber end is formed into a ball by heating. The sphere acts as a focusing lens within the application.
In addition, the roundness reduces the risk of injury during medical application. The spherical lens can achieve 2.5 times the diameter of the fiber. The focal length is several hundred pm.
It is important to note that the focal length always depends on the respective sphere diameter.