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High-performance 54-channel C-band AWGR for optical computing applications.

Xinhao Pan, Jun Chen, Dongxuan Xu

    Applied Optics
    |March 17, 2026
    PubMed
    Summary
    This summary is machine-generated.

    A novel 54-channel Arrayed Waveguide Grating Router (AWGR) on silica achieves high uniformity for optical computing. This device demonstrated high accuracy in classifying electrocardiogram (ECG) signals using optical computation.

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    Area of Science:

    • Photonics and Optical Engineering
    • Biomedical Signal Processing
    • Optical Computing

    Background:

    • High-uniformity Arrayed Waveguide Grating Routers (AWGRs) are crucial for advanced optical systems.
    • Silica-based photonic platforms offer a balance of performance and manufacturability.
    • Optical computing presents opportunities for high-speed signal processing.

    Purpose of the Study:

    • To develop and characterize a high-uniformity 54-channel 100 GHz AWGR on a silica platform.
    • To evaluate the performance of this AWGR in an optical computing system for electrocardiogram (ECG) signal classification.

    Main Methods:

    • Fabrication of a 54-channel 100 GHz AWGR utilizing a 0.75% silica platform.
    • Implementation of an improved Rowland circle design to enhance uniformity.
    • Integration of the AWGR into an optical computing architecture for ECG signal classification.

    Main Results:

    • Achieved insertion losses below 1.53 dB and non-uniformity under 0.2 dB.
    • Demonstrated 97.3% classification accuracy for ECG signals.
    • Attained 99.85% correlation with digital benchmarks using approximately 4-bit computational precision.

    Conclusions:

    • The developed high-uniformity AWGR is suitable for high-performance optical computing applications.
    • The device shows significant potential for efficient and accurate biomedical signal processing, such as ECG analysis.
    • This work validates the use of integrated photonic devices for complex computational tasks.