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Showing 1–4 of 4 results
Advanced filters: Author: Zejie Fei Clear advanced filters

  • Difference frequency generation (DFG) is promising for wavelength conversion and signal amplification, but is limited by low conversion efficiencies. Here, the authors demonstrate broadband and high-efficiency DFG under adapted poling implementation.

    • Haoran Li
    • Jingyan Guo
    • Daoxin Dai
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Researchers demonstrate an 8×240 Gbps DWDM transmitter on a thin-film lithium tantalate platform for the O-band, using a novel flat-top optical filter based on coupled Fabry–Perot cavities. It achieves low insertion loss (0.1–0.4 dB), a high extinction ratio (~26 dB), and a 12 nm free spectral range, showing promise for high-capacity optical links in AI and data centers.

    • Mingyu Zhu
    • Dajian Liu
    • Daoxin Dai
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • Nitrogen can form a maximum of three shared electron-pair bonds to complete its octet, suggesting the maximum bond order of nitrogen is three. Here, the authors report a joint photoelectron spectroscopy and quantum chemical study, showing a quadruple bond between nitrogen and thorium in thorium nitride.

    • Zejie Fei
    • Jia-Qi Wang
    • Jun Li
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8