Wei Jie Gao

Wei Jie Gao

Higher Degree by Research Candidate

School of Electrical and Electronic Engineering

Faculty of Engineering, Computer and Mathematical Sciences

His research interest focuses on terahertz waveguides, components, antennas, and microwave reconfigurable antennas. Research in terahertz integrated systems as a frontier of photonics have attracted a great attention. With integrability, portability, and low cost, terahertz integrated systems promise a wide range of unique applications, from 6G wireless communications to nondestructive imaging. To this end, terahertz integrated waveguide platforms with high efficiency, low dispersion, and broad bandwidth are crucial to build the comprehensive systems. Up until recent years, there was no unique integrated platform for terahertz systems available. Existing platforms adopted either millimeter-wave or photonic integrated circuit into the terahertz range. However, all those adopted platforms exhibit limitations in this range in terms of efficiency and bandwidth. Recently, he has proposed a class of self-supporting substrate-free effective-medium-clad dielectric waveguides together with a series of elementary components as building blocks for a terahertz integrated platform at WR-3 band. Based on the proposed platform, he has developed several terahertz components including effective-medium-clad Bragg grating filters, effective-medium-based lens antenna, and terahertz polarization beam splitter. All these devices feature high efficiency with a fractional bandwidth of 40%. It can be foreseen that the concept of effective medium can benefit integrated photonics at large.

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  • Journals
    Year Citation
    2021 Liang, J., Gao, W., Lees, H., & Withayachumnankul, W. (2021). All-Silicon Terahertz Planar Horn Antenna. IEEE Antennas and Wireless Propagation Letters, 1.
    DOI
    2021 Gao, W., Lee, W. S. L., Fumeaux, C., & Withayachumnankul, W. (2021). Effective-medium-clad Bragg grating filters. APL Photonics, 6(7), 076105.
    DOI
    2021 Lees, H., Gao, W., & Withayachumnankul, W. (2021). All-silicon, low-cross-talk terahertz waveguide crossing based on effective medium. Optics Letters, 46(21), 5469-5472.
    DOI
    2021 Gao, W., Lee, W. S. L., Yu, X., Fujita, M., Nagatsuma, T., Fumeaux, C., & Withayachumnankul, W. (2021). Characteristics of effective-medium-clad dielectric waveguides. IEEE Transactions on Terahertz Science and Technology, 11(1), 28-41.
    DOI Scopus5 WoS1
    2019 Gao, W., Yu, X., Fujita, M., Nagatsuma, T., Fumeaux, C., & Withayachumnankul, W. (2019). Effective-medium-cladded dielectric waveguides for terahertz waves. Optics Express, 27(26), 38721-38734.
    DOI Scopus17 WoS17 Europe PMC1
    2019 Gao, W., Chen, S., Withayachumnankul, W., & Fumeaux, C. (2019). Horizontally polarized 360° beam-steerable frequency-reconfigurable antenna. IEEE Transactions on Antennas and Propagation, 67(8), 5231-5242.
    DOI Scopus5 WoS4

  • Conference Papers
    Year Citation
    2020 Gao, W., Lee, W. S. L., Yu, X., Fujita, M., Nagatsuma, T., Fumeaux, C., & Withayachumnankul, W. (2020). Effective-Medium-Cladded Dielectric Waveguides towards Terahertz Integrated Platform. In 2020 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2020 - Proceedings (pp. 1-2). online: IEEE/OSA.
    DOI
    2020 Gao, W., Fumeaux, C., & Withayachumnankul, W. (2020). All-silicon terahertz components towards efficient integrated systems. In Procedings of the 45th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2020) Vol. 2020-November (pp. 210-211). online: IEEE.
    DOI Scopus1
    2019 Gao, W., Yu, X., Fujita, M., Nagatsuma, T., Fumeaux, C., & Withayachumnankul, W. (2019). Evolution from Air-Cladded to Effective-Medium-Cladded Dielectric Waveguides. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz Vol. 2019-September (pp. 1-2). online: IEEE.
    DOI Scopus1

2020, 2021 ECMS HDR Travelling Scholarships
2019 The University of Adelaide Research Travel Scholarship
2018 – Faculty of Engineering, Computer & Mathematical Science Scholarship & University Full-Fee Scholarship

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  • Mentoring
    Date Topic Location Name
    2021 - ongoing Broadband Terahertz Integrated Mode Filters School of Electrical and Electronic Engineering, The University of Adelaide Linxi Chen
    2021 - ongoing Terahertz Integrated Luneburg Lens Based on Transformation Optics School of Electrical and Electronic Engineering, The University of Adelaide Zheng-Hong Ma
    2020 - 2021 Sharp Bends for All-Silicon Terahertz Integrated Platform School of Electrical and Electronic Engineering, The University of Adelaide Mahmoud Mustafa Alshnqiti
    2020 - 2021 Terahertz Integrated Polarization Beam Splitter Based on Photonic Crystals School of Eelctrical and Electronic Engineering, The University of Adelaide Muhammad Mohd Hamdan
    2020 - 2021 Dispersion Engineering for Terahertz Effective-Medium-Clad Waveguides School of Electrical and Electronic Engineering, The University of Adelaide Muhammad Mohd Hosni
    2020 - 2020 All-Silicon, Low-Crosstalk Terahertz Waveguide Crossing Based on Effective Medium School of Electrical and Electronic Engineering, The University of Adelaide Harrison Lee
    2020 - 2020 All-Silicon Terahertz Planar Horn Antenna School of Electrical and Electronic Engineering, The University of Adelaide Jie Liang
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  • Community Engagement
    Date Title Engagement Type Institution Country
    2018 - 2018 Visiting student Scientific Community Engagement Graduate School of Engineering Scinence, Osaka University Japan
    2018 - ongoing Laboratory founding member Scientific Community Engagement Terahertz Engineering Laboratory, The University of Adelaide Australia
    2016 - 2018 Research assistant in microwave antennas Scientific Community Engagement Adelaide Applied Electromagnetics Group, The University of Adelaide Australia
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