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Tested WGPD structures for high responsivity operation.
Polarization dependencies of types I and II.
Responsivity vs PD length of type I. Fitting was done using Eq. (1).
Configuration for derivation of transit-time limited frequency response of WGPD with a thin absorption layer.
bandwidth with variation of intrinsic layer thickness for types III and IV.
Responsivities for four types of WGPDs.
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