Fiber optic coupling system and method for improved alignment tolerances

摘要

An optical signal coupling system including an optical source, beam shaping lens system, and a waveguide is disclosed. The beam shaping lens system converges the optical signal from the optical source into a focal area that is larger than the cross sectional area of the waveguide. The converged optical signal has a predetermined power distribution profile at the focal area such as a uniform distribution. Accordingly, misalignments of the waveguide and the optical signal source have minimal impact on the coupling efficiency of the optical signal from the optical source to the waveguide.