All-Fiber Multifunctional Electrooptic Prototype Device with a Graphene/PMMA (Poly(methyl methacrylate)) Hybrid Film Integrated on Coreless Side-Polished Fibers

Abstract

All-fiber optical devices with the merits of easy compatibility, strong anti-interference ability, and high robustness haven been extensively studied in the past years. However, the fabricating processes of these devices are complex and costly, and most of them are usually single-functional. Here, we demonstrate an all-fiber electro-optic prototype device with graphene/PMMA (polymethyl methacrylate) hybrid film integrated on the CSPF (coreless side-polished fiber) for the first time. The as-fabricated GP-CSPF can be used as an electro-optic modulator with the amplitude modulation efficiency of 1.13 dB/V at the wavelength of 1540 nm, which is comparable with the state-of-the-art modulators based on graphene. The internal working mechanism of the GP-CSPF was analyzed theoretically and experimentally. The results indicate the LMR (lossy mode resonance) and electro-thermo-optic effects work together on the device to achieve the electro-optic modulation. Meanwhile, the GP-CSPF also can be used as a photoconduc...