Abstract
A novel photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) effect for a wider range of refractive index (RI) detection is proposed. The sensitivity of the proposed sensor could reach −4851 nm/RI unit (RIU) in the dynamic RI range from 1.25 to 1.49 for the y-pol mode as well as −4523 nm/RIU in the dynamic RI range from 1.25 to 1.45 for the x-pol mode, which makes it has potential application prospects in the chemistry, biology, and environment monitoring.
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