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High-dimensional communication on etchless lithium niobate platform with photonic bound states in the continuum

Author

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  • Zejie Yu

    (The Chinese University of Hong Kong)

  • Yeyu Tong

    (The Chinese University of Hong Kong)

  • Hon Ki Tsang

    (The Chinese University of Hong Kong)

  • Xiankai Sun

    (The Chinese University of Hong Kong)

Abstract

Photonic bound states in the continuum (BICs) have been exploited in various systems and found numerous applications. Here, we investigate high-order BICs and apply BICs on an integrated photonic platform to high-dimensional optical communication. A four-channel TM mode (de)multiplexer using different orders of BICs on an etchless lithium niobate (LiNbO3) platform where waveguides are constructed by a low-refractive-index material on a high-refractive-index substrate is demonstrated. Low propagation loss of the TM modes in different orders and phase-matching conditions for efficient excitation of the high-order TM modes are simultaneously achieved. A chip consisting of four-channel mode (de)multiplexers was fabricated and measured with data transmission at 40 Gbps/channel. All the channels have insertion loss

Suggested Citation

  • Zejie Yu & Yeyu Tong & Hon Ki Tsang & Xiankai Sun, 2020. "High-dimensional communication on etchless lithium niobate platform with photonic bound states in the continuum," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15358-x
    DOI: 10.1038/s41467-020-15358-x
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