设计并制作了一种基于激光直写工艺的多模高聚物1×8光功率分配器。该器件采用了独特的次级非对称结构实现了光功率在各个输出端口的均匀分配。借助紫外激光直写的方式, 配合高精度平移台实现了器件的加工, 并将整个分配器的制作过程控制在5 min以内, 从而在加工周期上颇具优势。对所得的分配器进行了性能测试, 实验结果表明, 端口输出光功率最大均匀度差异小于4%, 证明了器件具有较为理想的分光性能。提出的激光直写法结构加工无需掩模或离子蚀刻等复杂加工手段, 有助于大幅度提高制造效率并能够有效地控制器件性能。

A 1×8 power splitter made of UV curable optical epoxy was proposed and fabricated. A novel asymmetrical structure was utilized in power splitting scheme to enable a uniform distribution of energy among all branches. By the use of laser direct writing process and high precision translation stages, the prototyping process was completed within a short fabrication phase of 5 min. Power splitting test was made and power from output ports were analyzed. The splitter has a nearly-equal output for all channels except for one with a 4% fluctuation. The asymmetric design and mask-less fabrication make it possible to realize an effective and high-yield production of this device.