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    <title language="eng">Optical Through-Silicon Waveguides for 3D-Chip-Interconnections</title>
    <abstract language="eng">Integrated optical interconnections in silicon chips have the potential to replace electrical interconnects between integrated circuits thanks to their high bandwidth and low energy communication promises. A silicon dielectric waveguide can be etched through the full thickness of a silicon substrate providing a monolithically integrated solution for 2.5D and 3D photonic architectures. The optical through-silicon waveguide design presented here is based on Finite Difference Time Domain simulations, while the fabrication takes advantage of the innovative plasma cryo-etching process that provides smooth sidewalls and tapering angle tunability. Such structures can provide effective mode size conversion, therefore favoring the coupling of external light sources to photonic integrated circuits and the stacking of multiple optically interconnected dies.</abstract>
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      <firstName>Friedhelm</firstName>
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      <value>Integrated Optics</value>
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      <language>eng</language>
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    <completedDate>2025-01-07</completedDate>
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    <title language="eng">Design, fabrication, and characterization of integrated optical through-silicon waveguides for 3D photonic interconnections</title>
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