柔性聚合物平台上的机械可调集成分束器
Mechanically tunable integrated beamsplitters on a flexible polymer platform
摘要：
我们报道了一种基于柔性聚合物聚二甲基硅氧烷（PDMS）的单片机械可调谐波导平台的开发。这样的装置在宽范围的线性几何失真上保持单模引导。这使得能够通过主芯片的弹性形变实现具有可调谐分束比的定向耦合器。我们制造了几种这种类型的设备，并验证了它们在一个波长范围内的操作，并获得了全范围的输入/输出比。这些设备的低成本和相对容易的制造，通过修改的压印光刻技术使它们成为一个有吸引力的平台，用于调查大规模的光学随机游动和相关的光学现象。
英文摘要：
We report the development of a monolithic, mechanically tunable waveguide platform based on the flexible polymer polydimethyl siloxane (PDMS). Such devices preserve single mode guiding across a wide range of linear geometric distortions. This enables the realization of directional couplers with tunable splitting ratios via elastic deformation of the host chip. We fabricated several devices of this type, and verified their operation over a range of wavelengths, with access to the full range of input/output ratios. The low cost and relative ease of fabrication of these devices via a modified imprint lithographic technique make them an attractive platform for investigation of large scale optical random walks and related optical phenomena.
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