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Microring resonator-assisted Fourier transform spectrometer with enhanced resolution and large bandwidth in single chip solution

Author

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  • S. N. Zheng

    (Nanyang Technological University
    Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research))

  • J. Zou

    (Nanyang Technological University
    Zhejiang University of Technology)

  • H. Cai

    (Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research))

  • J. F. Song

    (Jilin University)

  • L. K. Chin

    (Nanyang Technological University)

  • P. Y. Liu

    (Nanyang Technological University)

  • Z. P. Lin

    (Nanyang Technological University)

  • D. L. Kwong

    (Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research))

  • A. Q. Liu

    (Nanyang Technological University)

Abstract

Single chip integrated spectrometers are critical to bring chemical and biological sensing, spectroscopy, and spectral imaging into robust, compact and cost-effective devices. Existing on-chip spectrometer approaches fail to realize both high resolution and broad band. Here we demonstrate a microring resonator-assisted Fourier-transform (RAFT) spectrometer, which is realized using a tunable Mach-Zehnder interferometer (MZI) cascaded with a tunable microring resonator (MRR) to enhance the resolution, integrated with a photodetector onto a single chip. The MRR boosts the resolution to 0.47 nm, far beyond the Rayleigh criterion of the tunable MZI-based Fourier-transform spectrometer. A single channel achieves large bandwidth of ~ 90 nm with low power consumption (35 mW for MRR and 1.8 W for MZI) at the expense of degraded signal-to-noise ratio due to time-multiplexing. Integrating a RAFT element array is envisaged to dramatically extend the bandwidth for spectral analytical applications such as chemical and biological sensing, spectroscopy, image spectrometry, etc.

Suggested Citation

  • S. N. Zheng & J. Zou & H. Cai & J. F. Song & L. K. Chin & P. Y. Liu & Z. P. Lin & D. L. Kwong & A. Q. Liu, 2019. "Microring resonator-assisted Fourier transform spectrometer with enhanced resolution and large bandwidth in single chip solution," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10282-1
    DOI: 10.1038/s41467-019-10282-1
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    Cited by:

    1. Hongnan Xu & Yue Qin & Gaolei Hu & Hon Ki Tsang, 2024. "Scalable integrated two-dimensional Fourier-transform spectrometry," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Wenjie Deng & Zilong Zheng & Jingzhen Li & Rongkun Zhou & Xiaoqing Chen & Dehui Zhang & Yue Lu & Chongwu Wang & Congya You & Songyu Li & Ling Sun & Yi Wu & Xuhong Li & Boxing An & Zheng Liu & Qi jie W, 2022. "Electrically tunable two-dimensional heterojunctions for miniaturized near-infrared spectrometers," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Jingyi Wang & Beibei Pan & Zi Wang & Jiakai Zhang & Zhiqi Zhou & Lu Yao & Yanan Wu & Wuwei Ren & Jianyu Wang & Haiming Ji & Jingyi Yu & Baile Chen, 2024. "Single-pixel p-graded-n junction spectrometers," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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