Research / 2021 / Article / Fig 1

Research Article

Kilometers Long Graphene-Coated Optical Fibers for Fast Thermal Sensing

Figure 1

Conceptual design, industrial fabrication, and characterization of the GCF. (a) Schematic diagram of the GCF, 20 μm thick graphene-acrylate hybrid is coated on the silica fiber. It can accelerate heat transfer along the axial direction, enhancing the optical response of the fiber. (b) Industrial fabrication of the kilometers long GCF. Fiber drawing and graphene coating are finished in the assembly line automatically. (c) Microscopic pictures of the GCF; here, scale bars are marked inside. (d) Measured Raman spectra and side-view SEM pictures at different locations along the long GCF, verifying the consistent quality of the graphene and the uniformity of the coating.