Graphene oxide films for advanced ultra-flat optical devices and
photonic integrated circuits
Abstract
With superior optical properties, high flexibility in engineering its
material properties, and strong capability for large-scale on-chip
integration, graphene oxide (GO) is an attractive solution for on-chip
integration of two-dimensional (2D) materials to implement functional
integrated photonic devices capable of new features. Over the past
decade, integrated GO photonics, representing an innovative merging of
integrated photonic devices and thin GO films, has experienced
significant development, leading to a surge in many applications
covering almost every field of optical sciences. This paper reviews the
recent advances in this emerging field, providing an overview of the
optical properties of GO as well as methods for the on-chip integration
of GO. The main achievements made in GO hybrid integrated photonic
devices for diverse applications are summarized. The open challenges as
well as the potential for future improvement are also discussed.