Fiber optic microsphere with ZnO thin film for potential application in refractive index sensor – theoretical study




Optical fiber sensors of refractive index play important role in analysis of biological and chemical samples. This work presents a theoretical investigation of a spectral response of fiber optic microsphere with zinc-oxide (ZnO) thin film deposited on the surface and evaluates the prospect of using such structure for refractive index sensing. Microsphere is fabricated by optical fiber tapering method on the base of a single mode fiber. A numerical model is described and simulation was conducted to assess the influence of the ZnO layer deposition on a reflected signal. The results indicate that ZnO film improves the performance in terms of a potential application in refractive index sensor.

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How to Cite

M. Hirsch, “Fiber optic microsphere with ZnO thin film for potential application in refractive index sensor – theoretical study”, Photonics Lett. Pol., vol. 10, no. 3, pp. 85–87, Oct. 2018.