Investigation of a Highly Sensitive D-Type Photonic Crystal Fiber Utilizing Surface Plasmon Resonance
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Key Points
This research aims to develop a highly sensitive photonic crystal fiber sensor utilizing surface plasmon resonance for accurate refractive index detection.
Proposed a D-shaped photonic crystal fiber design with an open-loop channel coated with gold for efficient SPR excitation.
Conducted finite element analysis to evaluate performance characteristics and optimize sensing capabilities.
Investigated the impact of structural parameters on the resonant spectrum.
Achieved a maximum spectral sensitivity of 18,500 nm/RIU at a refractive index of 1.32.
Determined a sensor resolution of 5.41 × 10−6 RIU.
Established a detection range of refractive index between 1.23 and 1.32 with noticeable loss peak behaviors.
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Implication
Randomized trial demonstrates enhanced sensitivity for low-refractive-index detection, indicating its potential in optical applications.