Abe Kohei, Oizumi Yutaro, Ishigure Takaaki
Opt Express. 2018 Feb 19;26(4):4512-4521. doi: 10.1364/OE.26.004512.
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.
在本文中，采用软光刻法制备了具有渐变折射率（GI）方形芯的交叉聚合物波导。我们通过实验证明，所制备的GI芯交叉波导的插入损耗比传统的阶跃折射率（SI）芯交叉波导低得多，且几乎与交叉角度无关。我们还在本文中表明，与我们之前报道的利用丙烯酸酯树脂和掺杂剂系统制备的波导相比，采用有机-无机杂化树脂制备的交叉波导具有显著更高的热阻。
