Efficient Ball Lens Coupling Between a Single-mode Optical Fiber and a Silica Microguide at 1.3 μm

摘要

An efficient coupling between a single-mode optical fiber and a silica guide by a ball lens is demonstrated. We investigate this coupling scheme by a theoretical analysis and by the experiment. The contribution of all the loss factors is evaluated. The tolerances of the fiber posi-tionment are studied and then, this coupling solution is compared to the current butt-coupling.