On-chip optical interconnection using integrated germanium light emitters and photodetectors
Kazuki Tani, Tadashi Okumura, Katsuya Oda, Momoko Deura, T. Ido
Abstract
Germanium (Ge) is an attractive material for monolithic light sources and photodetectors, but it is not easy to integrate Ge light sources and photodetectors because their optimum device structures differ. In this study, we developed a monolithically integrated Ge light emitting diode (LED) that enables current injection at high density and a Ge photodiode (PD) having low dark current, and we fabricated an on-chip optical interconnection system consisting of the Ge LED, Ge PD, and Si waveguide. We investigated the properties of the fabricated Ge LED and PD and demonstrated on-chip optical interconnection.
Topics & Concepts
PhotodetectorPhotodiodeOptoelectronicsMaterials scienceGermaniumInterconnectionLight-emitting diodeDark currentOpticsDiodeChipWaveguideSiliconPhysicsTelecommunicationsComputer sciencePhotonic and Optical DevicesSemiconductor Lasers and Optical DevicesPhotonic Crystals and Applications