OPTICAL FIBER DEVICE AND METHOD FOR INTERCONNECTING DISSIMILAR FIBER

摘要

PROBLEM TO BE SOLVED: To provide optical fiber devices and methods for interconnecting dissimilar fibers in particular.

SOLUTION: A coupling waveguide is interconnected between a launching fiber and a receiving fiber to reduce coupling loss. The coupling waveguide includes an integrally formed graded index lens having a non-parabolic refractive index profile. The graded index lens receives as an input a coupling mode field of an optical signal launched by the launching fiber and transforms the coupling mode field into a transverse spatial distribution matching a corresponding coupling mode field of the receiving fiber.

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