Fast high-efficiency integrated waveguide photodetectors using novel hybrid vertical/butt coupling geometry
نویسندگان
چکیده
We report a novel coupling geometry for integrated waveguide photodetectors-a hybrid vertical coupling/butt coupling scheme that allows the integration of fast, efficient, photodetectors with conventional double heterostructure waveguides. It can be employed to yield a planar, or pseudo-planar, surface that supports further levels of integration. The approach is demonstrated with a 25pm-long p-i-n detector integrated with an InP/InGaAsP/ InP waveguide, which displays a high ( -90%) efficiency and large ( 15 GHz) bandwidth. This is the fastest high-efficiency integrated waveguide photodetector reported to date.
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