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Conference 11953 > Paper 11953-49
Paper 11953-49

Ta2O5 coated PCF based tunable plasmonic sensor for sensitivity enhancement and wide range RI detection

Abstract

The present study reports on the numerical investigation carried out on a newly designed photonic crystal fiber (PCF) based plasmonic sensor for sensitivity enhancement and wide range refractive index (RI) detection. Gold (Au) is used as active plasmonic material and an additional overlayer of tantalum pentoxide (Ta2O5) is used. This study presents the detail sensor performance without and with the Ta2O5 overlayer by using finite element method (FEM) and the sensor performance is analysed using surface plasmon resonance (SPR) phenomena. Maximum sensitivity of 9500 nm/RIU is reported in this study. Moreover, as the wide detection range falls into the analyte of biological interest, so, after proper functionalization the proposed sensor can be treated with biorecognition elements and finally biofunctionalized sensing probe can be applicable as potential biosensor.

Presenter

Indian Institute of Technology (Indian School of Mines), Dhanbad (India)
Sugandha Das is a PhD student in the Optical Fiber Laboratory, Department of Physics at IIT (ISM) Dhanbad, India. She has been a researcher in designing and studying optical and sensing properties of photonic crystal fiber (PCF) based sensors since 2017. Her current research interest is to design and study sensing properties on PCF based biosensors for biomedical applications. She is experienced in designing different refractive index sensors for various sensing applications. She is also an active student member of OSA and SPIE student chapter, IIT (ISM) Dhanbad.
Presenter/Author
Indian Institute of Technology (Indian School of Mines), Dhanbad (India)
Author
Indian Institute of Technology (Indian School of Mines), Dhanbad (India)