A silicon TM mode multiplexer based on three waveguide directional coupler with subwavelength grating

被引：0

作者：

Zhao, Yuhao ^{[1
]}

Hu, Guohua ^{[1
]}

Yun, Binfeng ^{[1
]}

Cui, Yiping ^{[1
]}

机构：

[1] Southeast Univ, Adv Photon Ctr, Nanjing, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2023年 / 527卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Integrated photonics; Mode division multiplexer; Subwavelength grating; Mode blocker; COMPACT;

D O I：

10.1016/j.optcom.2022.128939

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, a silicon TM mode multiplexer based on three waveguide directional coupler constructed by subwavelength gratings (SWG) is proposed. The working bandwidth is greatly increased by using the SWG waveguides and a mode block based on SWG is added to reduce the crosstalk. FDTD simulation results show that the insertion loss and crosstalk at 1550 nm are 0.7 dB and -35.9 dB respectively. Large working bandwidth of 270 nm (1400 nm similar to 1670 nm) can be achieved under the conditions of less than 3 dB insertion loss and -15 dB crosstalk. In addition, the fabrication tolerance of the proposed device is also investigated.

引用

页数：7

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