Robust optical mode converter based on topological waveguide arrays  

作　　者：徐宇翔 唐文剑 姜力炜 吴德兴 王恒 许冰聪 陈林 Yu-Xiang Xu;Wen-Jian Tang;Li-Wei Jiang;De-Xing Wu;Heng Wang;Bing-Cong Xu;Lin Chen(Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Chinese Physics B》2024年第6期197-203,共7页中国物理B（英文版）

基　　金：Project supported by the National Undergraduate Training Projects for Innovation and Entrepreneurship (Grant No. 5003182007);the National Natural Science Foundation of China (Grant No. 12074137);the National Key Research and Development Project of China (Grant No. 2021YFB2801903);the Natural Science Foundation from the Science,Technology,and Innovation Commission of Shenzhen Municipality (Grant No. JCYJ20220530161010023)。

摘　　要：Optical mode converters are essential for enhancing the capacity of optical communication systems. However, fabrication errors restrict the further improvement of conventional mode converters. To address this challenge, we have designed an on-chip TE0–TE1mode converter based on topologically protected waveguide arrays. The simulation results demonstrate that the converter exhibits a mode coupling efficiency of 93.5% near 1550 nm and can tolerate a relative fabrication error of 30%. Our design approach can be extended to enhance the robustness for other integrated photonic devices, beneficial for future development of optical network systems.

关 键 词：on-chip integrated photonic devices topological photonics mode converter ROBUSTNESS 

分 类 号：TN256[电子电信—物理电子学]