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  • Title: Low-loss graded-index polymer crossed optical waveguide with high thermal resistance.
    Author: Abe K, Oizumi Y, Ishigure T.
    Journal: Opt Express; 2018 Feb 19; 26(4):4512-4521. PubMed ID: 29475301.
    Abstract:
    In this paper, crossed polymer waveguides with graded-index (GI) square cores are fabricated using the soft-lithography method. We experimentally demonstrate that the fabricated GI-core crossed waveguides exhibit a much lower insertion loss than conventional step index (SI)-core counterparts, which is almost independent of the cross angle. We also show in this paper that the crossed waveguides fabricated applying organic-inorganic hybrid resins show remarkably high thermal resistance compared to the waveguides fabricated utilizing an acrylate resin and a dopant system we previously reported.
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