Abstract
For the butt-joint coupling between a single mode fiber (SMF) and a single mode dielectric slab waveguide (SMDSW) with a spherical fiber micro-lens (SFML), the influence of aberration on the propagation characteristics and coupling efficiencies of the coupler are investigated using the Monte Carlo simulation. The simulation results show that because of the spherical aberration effects, the location of the waist of the focused beam is nearer to the geometrical focus than that of the aberration free fiber micro-lens (AFFML), and so the coupling efficiencies are less and the curves are platter with respect to the AFFML.
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