Low-loss compact 1×2 MMI coupler with hybrid structure based on rib-strip-rib waveguide for thick-silicon platform

Zezheng Li; Xudong Gao; Zhenzhu Xu; Yupeng Zhu; Chengkun Yang

doi:10.1117/12.3000692

24 November 2023 Low-loss compact 1×2 MMI coupler with hybrid structure based on rib-strip-rib waveguide for thick-silicon platform

Zezheng Li, Xudong Gao, Zhenzhu Xu, Yupeng Zhu, Chengkun Yang

Author Affiliations +

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129350G (2023) https://doi.org/10.1117/12.3000692
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

In this paper, a novel 1×2 MMI coupler is proposed in the 3 m thick-silicon platform, which is based on rib input/output waveguide and strip multimode core waveguide. The hybrid waveguide structure can achieve a low-loss optical transmission with 0.017 dB at 1550 nm which is a comparable performance of traditional strip MMI coupler. In addition, the proposed structure can directly join the power splitter with other optical element such as ultra-low-loss single-mode rib waveguide and high-speed electro-optical Mach-Zehnder interferometers, which is a strong candidate for the conventional waveguide transformer between strip coupler and rib modulator.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zezheng Li, Xudong Gao, Zhenzhu Xu, Yupeng Zhu, and Chengkun Yang "Low-loss compact 1×2 MMI coupler with hybrid structure based on rib-strip-rib waveguide for thick-silicon platform", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129350G (24 November 2023); https://doi.org/10.1117/12.3000692

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