Highly nonlinear hybrid AsSe-PMMA microtapers and applications

We report the fabrication and optical characterization of the first hybrid chalcogenide-polymer microtapers. With this material combination, the chalcogenide wire induces a large Kerr effect whereas the polymer coating provides sufficient mechanical robustness and flexibility to the assembly for normal handling as well as limiting the evanescent interaction with the environment. A few centimeters of such a nonlinear microtaper can replace kilometers of highly nonlinear silica fiber. Becoming a building block in itself, the hybrid microtaper can also be used to assemble new highly nonlinear components such as nonlinear couplers.

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