High-efficient subwavelength structure engineered grating couplers for 2-μm waveband high-speed data transmission

被引：6

作者：

Hu, Yueyang ^{[1
]}

He, Wenchang ^{[1
]}

Sun, Yuhan ^{[1
]}

Yi, Qiyuan ^{[1
,2
]}

Xing, Sizhe ^{[3
]}

Yan, Zhiwei ^{[2
]}

Xia, Lipeng ^{[1
]}

Li, Ting ^{[1
]}

Zhou, Peiji ^{[1
]}

Zhang, Junwen ^{[3
]}

Shen, Li ^{[2
]}

Zou, Yi ^{[1
]}

机构：

[1] ShanghaiTech Univ, Coll Informat Sci & Technol, Shanghai 201210, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[3] Fudan Univ, Dept Commun Sci & Engn, Key Lab Informat Sci Electromagnet Waves, MoE, Shanghai 200433, Peoples R China

来源：

OPTICS EXPRESS | 2023年 / 31卷 / 23期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

2; MU-M; SILICON; GUIDES; WAVELENGTH;

D O I：

10.1364/OE.501601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The 2-mu m waveband is becoming an emerging window for next-generation highspeed optical communication. To enable on-chip high-speed data transmission, improving the signal-to-noise ratio (SNR) by suppressing the coupling loss of a silicon chip is critical. Here, we report grating couplers for TE and TM polarized light at the 2-mu m waveband. With a single-step fully etched process on the 340 nm silicon-on-insulator (SOI) platform, the devices experimentally demonstrate high coupling efficiency of-4.0 dB and 1-dB bandwidth of 70 nm for the TE polarized light, while-4.5 dB coupling efficiency and 58 nm 1-dB bandwidth for the TM polarized light. For comprehensive performance, both of them are among the best grating couplers operating in the 2-mu m waveband so far. We also demonstrate 81Gbps high-speed on-chip data transmission using pulse amplitude modulation 8-level (PAM-8) signals.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：39079 / 39087

页数：9

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