Features：At the front end of the fiber, a conical surface with a specific angle is ground, followed by grinding a spherical surface with a defined curvature radius at its front edge.

Applications：Tapered lensed fiber is for coupling to LDs, DFBs, SLDs, or VCSELs with a circular or nearly circular beam cross-section. 

High-precision tapered lensed fiber is also used in the medical laser micro-surgery systems and micro-illumination systems. In addition, the increasingly matured optical fiber waveguide coupling, and silicon integration inevitably uses the tapered lensed fiber to improve coupling efficiency.