中国物理B ›› 2024, Vol. 33 ›› Issue (6): 60306-060306.doi: 10.1088/1674-1056/ad3811

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Robust optical mode converter based on topological waveguide arrays

Yu-Xiang Xu(徐宇翔)†, Wen-Jian Tang(唐文剑)†, Li-Wei Jiang(姜力炜), De-Xing Wu(吴德兴), Heng Wang(王恒), Bing-Cong Xu(许冰聪), and Lin Chen(陈林)‡   

  1. Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2024-01-09 修回日期:2024-03-14 接受日期:2024-03-27 出版日期:2024-06-18 发布日期:2024-06-18
  • 通讯作者: Lin Chen E-mail:chen.lin@mail.hust.edu.cn
  • 基金资助:
    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), and the Natural Science Foundation from the Science, Technology, and Innovation Commission of Shenzhen Municipality (Grant No. JCYJ20220530161010023).

Robust optical mode converter based on topological waveguide arrays

Yu-Xiang Xu(徐宇翔)†, Wen-Jian Tang(唐文剑)†, Li-Wei Jiang(姜力炜), De-Xing Wu(吴德兴), Heng Wang(王恒), Bing-Cong Xu(许冰聪), and Lin Chen(陈林)‡   

  1. Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2024-01-09 Revised:2024-03-14 Accepted:2024-03-27 Online:2024-06-18 Published:2024-06-18
  • Contact: Lin Chen E-mail:chen.lin@mail.hust.edu.cn
  • Supported by:
    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), and 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 TE$_{0}$-TE$_{1}$ mode converter based on topologically protected waveguide arrays. The simulation results demonstrate that the converter exhibits a mode coupling efficiency of 93.5% near 1550nm 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

Abstract: 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 TE$_{0}$-TE$_{1}$ mode converter based on topologically protected waveguide arrays. The simulation results demonstrate that the converter exhibits a mode coupling efficiency of 93.5% near 1550nm 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.

Key words: on-chip integrated photonic devices, topological photonics, mode converter, robustness

中图分类号:  (Phases: geometric; dynamic or topological)

  • 03.65.Vf
42.82.Et (Waveguides, couplers, and arrays) 85.60.-q (Optoelectronic devices)