Design of SiON-based grating-assisted vertical directional couplers.
Design of SiON-based grating-assisted vertical directional couplers.
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DOI：
10.1364/oe.14.001055
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发表时间：
2006-02
期刊：
影响因子：
3.8
通讯作者：
V. Passaro;G. Masanovic
中科院分区：
文献类型：
--
作者：
V. Passaro;G. Masanovic
在本文中，我们提出了一种基于精确的数值计算方法的SiON基光栅辅助异质波导同向耦合器的设计。所有的设计参数，包括耦合长度和耦合效率，已经计算出在自由空间光波长λ =1.54 μ m的TE和TM偏振作为光栅高度，耦合板的厚度，两个耦合平面波导之间的间隙厚度的函数。它示出，可以实现高效（高达70%）和偏振独立的垂直耦合器。
In this paper, we present the design of a SiON-based grating-assisted codirectional coupler for dissimilar waveguides, based on an accurate numerical method. All the design parameters, including coupling length and coupling efficiency, have been calculated at the free-space optical wavelength of lambda=1.54 mum for both TE and TM polarisations as a function of grating height, thickness of the coupled slabs, gap thickness between the two coupled planar waveguides. It is shown that efficient (up to 70%) and polarisation independent vertical couplers can be realised.