Open AccessOn-chip optical interconnection using integrated germanium light emitters and photodetectors
Author(s) -
Kazuki Tani,
Tadashi Okumura,
Katsuya Oda,
Momoko Deura,
T. Ido
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.432324
Subject(s) - photodetector , photodiode , germanium , optoelectronics , materials science , interconnection , optics , light emitting diode , chip , dark current , diode , waveguide , silicon , physics , telecommunications , computer science
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.