Hemispherical Thermal lensing of fiber

Lensing optical fiber is an important for collecting efficiently the optical power from the light source and reducing the back reflection. It improves the coupling efficiency at the input of the single mode fiber. In this article S153A FitelSplicer electric arc discharge is used to thermally lens an SMF-28 fiber in hemispherical shape. The effect of the fusion program parameters on the output lensed fiber is studied. Time and arc power of the fusion are modified and the output radius of the lensed fiber is monitored. The calibration curves for this fiber between the resulted lensed fiber radius and the fusion parameters are generated. Accurate degree of repeatability of the process is achieved in the experiment at high arc power.