PHOTONIC INTEGRATED CIRCUIT INCLUDING PASSIVE OPTICAL GUARD

The disclosure relates to a PIC structure including a photonic component on a semiconductor substrate. A passive optical guard is composed of a light absorbing material and is in proximity to the photonic component. The passive optical guard includes at least a portion in an active semiconductor lay...

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Bibliographic Details
Main Authors Bian, Yusheng, Stricker, Andreas D, Wu, Zhuojie
Format Patent
LanguageEnglish
Published 21.12.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The disclosure relates to a PIC structure including a photonic component on a semiconductor substrate. A passive optical guard is composed of a light absorbing material and is in proximity to the photonic component. The passive optical guard includes at least a portion in an active semiconductor layer of the semiconductor substrate and may be entirely below a first metal layer. The passive optical guard may include at least one of: a germanium body positioned at least partially in a silicon element in the active semiconductor layer, a silicon body having a high dopant concentration in the active semiconductor layer, and a polysilicon body having a high dopant concentration over the silicon body.
Bibliography:Application Number: US202217807257