Wen Fung Jacky, Chung Po Sheun
Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong SAR, China.
Appl Opt. 2011 Jul 1;50(19):3187-90. doi: 10.1364/AO.50.003187.
In this paper, we propose a compact seven-port beam splitter which is constructed using only a single-layer high-density grating with a dual duty cycle structure. The properties of this grating are investigated by a simplified modal method. The diffraction efficiency can be achieved around 10% more than conventional Dammann gratings while the uniformity can still be maintained at less than 1%. The effect of deviations from the design parameters on the performance of the grating is also presented.
在本文中，我们提出了一种紧凑的七端口分束器，它仅使用具有双占空比结构的单层高密度光栅构建而成。通过一种简化的模态方法研究了这种光栅的特性。其衍射效率比传统达曼光栅可提高约10%，同时均匀性仍可保持在1%以内。还给出了设计参数偏差对光栅性能的影响。
