Design of an ultra-broadband silicon mode (de)multiplexer
Design of an ultra-broadband silicon mode (de)multiplexer
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DOI：
10.1016/j.optcom.2015.10.066
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发表时间：
2016-03
影响因子：
2.4
通讯作者：
Weiwei Chen;Pengjun Wang;Zhang Yawei;Jianyi Yang
中科院分区：
文献类型：
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作者：
Weiwei Chen;Pengjun Wang;Zhang Yawei;Jianyi Yang
我们提出了一种低串扰和宽带模式（解）复用器。它是利用硅波导非对称Y结级联模式（去）转换器设计的。每个阶段的不对称Y型接头是模块化的。对于每个非对称Y型结，通过控制两臂的宽度，从奇（偶）模分离的茎的偶（奇）模演化为宽（窄）臂的低阶模，反之亦然。以一个四通道TE偏振模（解）复用器为例进行了分析。仿真结果表明，四通道模（解）复用器对在280 nm的公共频谱带宽上具有低串扰（<−14.1 dB）。
We propose a low-crosstalk and broadband mode (de)multiplexer. It is designed by cascading mode (de)interleavers utilizing silicon waveguide asymmetric Y-junctions. Asymmetric Y-junctions of each stage are modular. For each asymmetric Y-junction, the even (odd) modes of the stem separated from the odd (even) modes evolve into the low-order modes of the wide (narrow) arm by controlling the widths of the two arms, and vice versa. A four-channel mode (de)multiplexer for TE polarization is analyzed as an example. Simulations show the four-channel mode (de)multiplexer pair has a low crosstalk (<−14.1 dB) over a common spectral bandwidth of 280 nm.