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The aim is to create advanced photonic integrated circuits that manipulate optical spectra with improved complexity and resolution.

August 13, 2026Nature CommunicationsOpen Access

Hyper-spectral photonic integrated circuits based on recursive inverse design

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The aim is to create advanced photonic integrated circuits that manipulate optical spectra with improved complexity and resolution.
Implemented hyper-spectral circuits with interconnected reflective nodes using a recursive inverse-design workflow.
Maximized spectral complexity by optimizing node geometry and circuit topology.
Achieved experiments using a single waveguide with 11 reflective nodes.
The circuit achieved a complexity equivalent to over 100 cascaded Mach-Zehnder interferometer stages.
Reconstructed spectra with sub-picometer resolution across an 800 nm bandwidth.
Enabled simultaneous optical and radio signal monitoring within a single device.

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This randomized trial develops hyper-spectral photonic circuits for complex optical spectra, suggesting advancements in compact signal analysis.

He et al. (2026) studied this question.

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This randomized trial develops hyper-spectral photonic circuits for complex optical spectra, suggesting advancements in compact signal analysis.