TUNING THE RESONANCE OF THE EXCESSIVELY TILTED LPFG-ASSISTED SURFACE PLASMON POLARITONS: OPTIMUM DESIGN RULES FOR ULTRASENSITIVE REFRACTOMETRIC SENSOR

An excessively tilted LPFG-assisted surface plasmon polaritons sensor (ExTLPFG assisted SPP sensor) with ultrahigh sensitivity is proposed and numerically investigated using the finite-element-method-based full-vector complex coupled mode theory.We show that the SPP mode is transited (or excited) gradually from both the p-polarized TM0,j and EHv,j

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