ArticleNature communications2025
On-chip, inverse-designed active wavelength division multiplexer at THz frequencies.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
The development of photonic integrated components for the terahertz region has become an active and growing research field. Despite the numerous applications in this spectral range, hardware design still faces several challenges. We demonstrate an on-chip, active wavelength division multiplexer (WDM) operating at THz frequencies (> 1 THz). The WDM architecture is based on an inverse design topology optimization applied to an active quantum cascade heterostructure embedded in a double metal cavity and planarized with a polymer. Such an approach enables the fabrication of a strongly subwavelength device, with a normalized volume of V/λ
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