使用亚波长粒度的非易失性柔性栅极波长选择开关-Ge2Sb2Te5-辅助硅微环谐振器

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-07-01 DOI:10.1117/1.JNP.17.036008

Dongfei Zheng, Dejun Kong, W. Liang, Pengjun Wang, Qiang Fu, Weiwei Chen, S. Dai, Jun Li, T. Dai, Jianyi Yang

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引用次数: 0

摘要

摘要提出了一种基于亚波长晶粒-Ge2Sb2Te5（GST）辅助硅微环谐振器（MRR）的非易失性柔性栅极波长选择开关（NVFGWSS）。通过控制亚波长光栅GST和移相器的状态，组合所设计的亚波长光栅GST-辅助硅MRR的透射光谱，从而根据需要产生可调谐带宽（BWs）。对所提出的亚波长光栅GST辅助硅MRR和相应的NVFGWSS进行了综合分析。数值模拟表明，对于包括亚波长光栅GST辅助硅MMR和基于椭圆的交叉波导的设计模块，其最大串扰（CT）和插入损耗分别为-18.08和0.50dB。对于设计的NVFGWSS，由于通道间距为0.8 nm，带内纹波和CT分别<0.895和−13.006 dB，并且3dB BW从0.51变化到3.2nm。

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Non-volatile flexible-grid wavelength-selective switch using subwavelength-grating-Ge2Sb2Te5-assisted silicon microring resonators

Abstract. A non-volatile flexible-grid wavelength-selective switch (NVFGWSS) based on subwavelength-grating-Ge2Sb2Te5 (GST)-assisted silicon microring resonators (MRRs) is proposed. By controlling the state of the subwavelength grating GST and the phase shifter, the transmission spectra of the designed subwavelength-grating-GST-assisted silicon MRRs are combined, and thus tunable bandwidths (BWs) are generated as required. A comprehensive analysis of the presented subwavelength-grating-GST-assisted silicon MRRs and the corresponding NVFGWSS is given. Numerical simulations reveal that, for the designed module comprising a subwavelength-grating-GST-assisted silicon MMR and an ellipse-based crossing waveguide, its maximum crosstalk (CT) and insertion loss are −18.08 and 0.50 dB, respectively. For the designed NVFGWSS, as the channel spacing is 0.8 nm, the in-band ripple and CT are <0.895 and −13.006 dB, respectively, and the 3-dB BW changes from 0.51 to 3.2 nm.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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