▎ 摘　　要

Incorporating nanomaterials into photonic device to enhance light-matter interaction is a promising method to enhance photonic sensing, and investigating the interaction of nanomaterials with photonic devices is essential for evanescent field-based photonic devices. In this study, the light-matter interaction of nanomaterial-photonic devices is investigated via in situ synthesis of multilayer zeolitic imidazolate framework-8 (ZIF-8) nanoparticles on a graphene oxide (GO) premodified optical fiber. The introduction of GO successfully refines the weak adhesion of ZIF-8 on the optical microfiber, which aids the synthesis of highly uniform morphology. Based on the evanescent field change during the growth process of ZIF-8 on the optical microfiber, the optical properties of ZIF-8 are obtained through experiment and simulation. Ethanol is used to verify the capability of the sensing platform, and a concentration specific response with high sensor response at room temperature and low limit detection (5.26 ppm) is demonstrated, which matches the theoretical results. The incorporation of the GO/ZIF-8 multilayer fiber sensor leads to ultrafast sensor response (118 ms), resulting from the high specific surface area and porous structure. The obtained sensor provides a guideline for metal-organic frameworks (MOFs) coated photonic devices with potential industrial applications and environmental benefits.