Plasmonic sensor based on microstructure PCF: performance analysis with outside detecting approach

In this paper, a novel microstructure photonic crystal fiber (MC-PCF)-surface plasmon resonance sensor is presented and developed using the finite element method with perfectly matched layer boundary condition. The performance in terms of wavelength sensitivity (WS), amplitude (AS), figure merit (FoM) quantitatively examined an external sensing technique optimal thickness 40 nm chemically stable gold. Finer mesh analysis also used for modal analysis. At optimized gold thickness, highest recorded WS 92,000 per RIU AS 1080 at detecting range 1.33–1.38 are obtained. Within range, has strong linear fit FoM 348.15 RIU, respectively. Because its high FoM, suggested might be viable competitor analyte refractive index. Finally, to demonstrate capability our proposed sensor, all parameters were compared previously published studies.