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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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Broadband 2  ×  2 multimode interference coupler for mid-infrared wavelengths

Callum J Stirling, Robert Halir, Alejandro Sánchez-Postigo

    Optics Letters
    |November 1, 2021
    PubMed
    Summary

    Researchers developed a subwavelength-structured multimode interference coupler for photonic integrated circuits. This new device doubles the operational bandwidth for mid-infrared sensing applications.

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