AMO Demonstrates Ultrafast Graphene-based Photodetectors With Data Rates up to 50 GBit/s
(Nanowerk News) In cooperation with Alcatel Lucent Bell Labs researcher from AMO realized the worldwide fastest Graphene based photodetectors. By demonstrating a maximum data rate of 50 GBit/s a new record level could be reached, pushing this technology closer to applications.
Fabrication of photodetectors based on CVD-grown graphene on silicon photonic waveguides.
Graphene, a two-dimensional layer of carbon atoms, is currently one of the most promising materials for future ultrafast and compact telecommunication systems. With a very high charge-carrier mobility and a broadband electro-optical response it can be integrated in large-scale silicon based systems. In the current work Graphene based photodetectors were integrated in a conventional silicon photonic platform, designed for future on-chip applications in the area of ultrafast data communication. In addition the specific features of Graphene-based photodetectors like dark current free and high speed operation and the CMOS-compatible large scale integration could be utilized.
With this step ahead researchers at AMO and Alcatel Lucent Bell Labs could not only set a new benchmark for graphene based photodetectors, but also demonstrate for the first time that Graphene based photodetectors surpass comparable detectors based on conventional materials concerning maximal data rates.