PHOTONIC INTEGRATED CIRCUIT STRUCTURE
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United States of America Patent
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Issued Date -
Apr 25, 2024
app pub date -
Jun 13, 2023
filing date -
Jun 13, 2023
priority date (Note) -
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Abstract
A photonic integrated circuit structure includes a substrate, a waveguide structure and a spot size converter. The waveguide structure is disposed over a surface of the substrate and has a receiving end. The spot size converter includes a concave mirror and a curved mirror. The concave mirror and the curved mirror are opposite to each other and have a common focus. The concave mirror is arranged to reflect a parallel beam from a transmitting end such that a first reflected beam is able to converge at the common focus, and the curved mirror is arranged to reflect the first reflected beam such that a second reflected beam is directed parallel to the receiving end of the waveguide structure.
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