Localized Surface Plasmon Resonance based Photonic Crystal Fiber for Cadmium Detection

Abstract

In this work, fabrication of Localized Surface Plasmon Resonance based fiber optic sensing probe for cadmium detection in an aqueous solution is reported. Multimode fiber-photonic crystal fiber-multimode fiber structure coated with gold nanoparticles make up this probe. The proposed sensor's sensitivity is 1.564 nm/ppm. Furthermore, the sensor is small in size, immune to electromagnetic interference, making it ideal for a wide range of harsh environments and real-time measurement.

Hybrid structure of u bent optical fiber local surface plasmon resonance sensor based on graphene

“…The SPR phenomenon was transformed to an local surface plasmon resonance (LSPR) phenomenon when metallic Nano particles were used instead of a bulk metal sheet [10]. Due to their small size, low cost, and flexibility, localized surface plasmon resonance (LSPR) sensors have piqued interest among 645 various types of fiber optic sensing probes [11]. The refractive index variations on the sensor surface cannot be fully detected by standard optical fiber LSPR sensors, limiting their sensitivity.…”