Ultra-compact silicon mode (de)multiplexer based on directional couplers with subwavelength sidewall corrugations

被引：29

作者：

Wang, Xiaofei ^{[1
]}

Yu, Hui ^{[1
,2
]}

Zhang, Qiang ^{[2
]}

Fu, Zhilei ^{[1
]}

Xia, Penghui ^{[1
]}

Huang, Qikai ^{[1
]}

Ning, Nannan ^{[1
]}

Wei, Zhujun ^{[1
]}

Wang, Yuehai ^{[1
]}

Jiang, Xiaoqing ^{[1
]}

Yang, Jianyi ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Informat Sci & Elect Engn, Inst Integrated Microelect Syst, Hangzhou 310027, Peoples R China

[2] Zhejiang Lab, Hangzhou 311121, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 09期

关键词：

NETWORKS-ON-CHIP;

D O I：

10.1364/OL.449493

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Asymmetrical directional couplers aided with subwave-length sidewall corrugations are used to realize ultra-compact silicon mode (de)multiplexers at C-band. Three mode (de)multiplexers with ultra-short coupling lengths of 5.6/6.5/7.7 mu m are designed to enable low-loss mode conversions between TE0 and TE1/2/3 modes. They are then cascaded to build a four-channel mode-division-multiplexing (MDM) link. The four mode channels present minimal on-chip insertion losses of 0.2/0.7/0.7/0.9 dB at their peak wavelengths. Measured cross talk levels of the four mode channels are better than -18.0/-19.1/-16.0/-18.2 dB within the wavelength range from 1530 nm to 1580 nm. (C) 2022 Optica Publishing Group

引用

页码：2198 / 2201

页数：4

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