Temperature-induced effect on refractive index of graphene based on coated in-fiber Mach

Temperature-induced effect on refractive index of graphene based on coated in-fiber Mach–Zehnder interferometer

Li Li-Jun^{1, 2, 3, †}, Gong Shun-Shun¹, Liu Yi-Lin¹, Xu Lin¹, Li Wen-Xian¹, Ma Qian³, Ding Xiao-Zhe¹, Guo Xiao-Li¹

(a) SEM image of the graphene coated around the circular surface of optical fiber. (b) SEM image of graphene coated around the surface of etched TCF. (c) High-resolution image of lamellar structures of the graphene coating. (d) High-resolution image of the graphene coating surface on the fiber.