Theoretical Design of Surface Plasmon Resonance based Microwave Sensor using Optical Fiber

Abstract

Microwaves (MW) sensing is done through a complex and large size sensor which comprises a lot of electronic components. In this research, microwave (MW) sensing, based on surface plasmon resonance using optical fiber is analyzed and a new scheme to sense MW is proposed. The motivation is to introduce a new scheme to sense MW, minimize the conventional MW detector size and reduce the number of electronic components in the sensor by using a new scheme. Here MW is detected by measuring the surface plasmon wavelength shift which is the result of the related Bragg wavelength shift (0.009 nm/ 0C ) in the optical fiber due to temperature change. The results are compared with existing research findings to establish the sensing principle of MW based on surface plasmon resonance, generated in optical fiber’s metal-dielectric interface. This proposed sensor can be integrated with other micro-electronic devices very easily.