Surface plasmon resonance based fiber optic sensor using an additional layer of platinum: A theoretical study

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• 作者：Navneet K. Sharma ; ^{navneetk.sharma@jiit.ac.in} ; Sarika Shukla ; Vivek Sajal
• 关键词：Surface plasmon resonance ; Optical fiber ; Sensor ; Pt
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：133
• 期：Complete
• 页码：43-50
• 全文大小：1449 K
• 卷排序：133

文摘

Surface plasmon resonance (SPR) based fiber optic sensor with bimetallic layers of Au/Ag/Cu-Pt is theoretically studied. The outer Pt layer over Au/Ag/Cu layer is shown to enhance the sensitivity of SPR sensor. For a fixed thickness of Au/Ag/Cu layer, the sensitivity increases with increase in Pt layer thickness. Sensitivity also enhances with increase in thickness of Au/Ag/Cu layer for all thicknesses of Pt layers. Besides, Au-Pt bimetallic layers based SPR sensor possesses higher sensitivity than that of Ag-Pt and Cu-Pt bimetallic layers. 50 nm Au–20 nm Pt based SPR sensor exhibits maximum sensitivity of 3571 nm/RIU.