Title :
Modeling of Tapered Fiber-Optic Surface Plasmon Resonance Sensor With Enhanced Sensitivity
Author :
Verma, Rajneesh K. ; Sharma, Anuj K ; Gupta, Banshi D.
Author_Institution :
Indian Inst. of Technol. Delhi, New Delhi
Abstract :
Theoretical model for surface-plasmon-resonance-based fiber-optic sensor with a metal-coated uniform core sensing region sandwiched between two identical tapered fiber regions is proposed. The effect of taper ratio (TR) on the sensitivity of the sensor is studied. The study shows that the proposed probe geometry with TR lying between 1.5 and 2.0 provides the best performance. The physical reasons behind sensitivity enhancement due to tapered regions are provided.
Keywords :
fibre optic sensors; surface plasmon resonance; fiber-optic sensor; metal-coated sensing region; probe geometry; sensitivity enhancement; sensor sensitivity; surface plasmon resonance sensor; taper ratio; tapered fiber regions; uniform core sensing region; Optical fiber sensors; Optical fiber theory; Optical fibers; Optical refraction; Optical sensors; Optical surface waves; Optical variables control; Plasmons; Probes; Resonance; Evanescent field; optical fiber; sensitivity; sensor; surface plasmon; tapered fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.906840
