Invention Grant
US08798410B2 Optical system with integrated photodetector using a self-aligned double U-groove structure 有权
具有集成光电检测器的光学系统采用自对准双U形槽结构

Optical system with integrated photodetector using a self-aligned double U-groove structure
Abstract:
An optical system includes a silicon substrate, a 45-degree or 54.7-degree reflector formed in the silicon substrate, deeply etched double U-shape trenches formed in the silicon substrate, a thin film disposed on the reflector surface with total or partial optical refection, a top and bottom surface contacted p-i-n structure formed in the silicon substrate for optical power monitoring, a plurality of rectangular or wedge shaped spacers formed on top surface of the silicon substrate, and a surface emitting light source flip-chip bonded on the silicon substrate via the spacers.
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