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Dynamic optical coupled system employing even-numbered Dammann gratings

机译：使用偶数达曼光栅的动态光耦合系统

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摘要

Dammann gratings are well known for their ability to generate arrays of uniform-intensity beams from an incoming monochromatic beam. We apply the even-numbered Dammann grating to achieve dynamic optical coupled technology. A 1 X N dynamic optical coupled system is developed by employing two complementary even-numbered Dammann gratings. With this system we can achieve a beam splitter and combiner as a switch between them according to the relative shift between the gratings. Also, this system is a preferable approach in integral packaging. More importantly, this device has the potential to be applied to the splitting of a large array, e.g., 8 X 16 array and 64 X 64 array, which is difficult to be realized with conventional splitting methods. We experimentally demonstrated a 1 X 8 coupler at the wavelength of 1550 nm. Furthermore we analyze the effects of the alignment errors between gratings and the wavelength-dependent error on efficiency and uniformity. The experimental results and the influence of alignment error and wavelength-dependent error are analyzed in detail.
机译：达曼光栅因从入射的单色光束产生均匀强度光束阵列的能力而闻名。我们应用偶数的达曼光栅来实现动态光耦合技术。通过使用两个互补的偶数达曼光栅开发了一个1 X N动态光耦合系统。使用该系统，我们可以根据光栅之间的相对位移实现分束器和组合器作为它们之间的切换。而且，该系统是整体包装中的优选方法。更重要的是，该器件具有被应用于大阵列（例如8×16阵列和64×64阵列）的分离的潜力，这是用传统的分离方法难以实现的。我们通过实验证明了在1550 nm波长下的1 X 8耦合器。此外，我们分析了光栅之间的对准误差以及与波长有关的误差对效率和均匀性的影响。详细分析了实验结果以及对准误差和波长相关误差的影响。

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