Mercedes Benz logo based plasmon resonance PCF sensor
Shaymaa R. Tahhan, Rana M. Taha
Abstract
A novel surface plasmon resonance (SPR) based Mercedes Benz Logo Photonic crystal fiber (PCF) has been used to construct and investigate the finite element approach (FEM) for sensing different analytes. A gold (Au) layer has been added to generate the SPR effect. Besides reducing the adhesive problem of the gold layer, an additional layer of TiO2 is also deposited. The investigation is performed based on the optical parameters such as confinement loss, amplitude sensitivity, resolution, and the parameters that will affect the sensitivity response. Here, fewer air holes with maximum sensitivity response are obtained 700 nm/RIU for the analyte 1.41. The maximum amplitude sensitivity response is also obtained as 2561 RIU−1 for the analyte 1.41. Besides, the maximum FWHM value is 46.9, with a resolution value of 1.428 × 10−5 RIU. These highest values are gained by analyzing the effects of different parameters using the analyte refractive index (RI) from 1.33 to 1.41. The investigated result shows that the sensor is highly sensitive for detecting analytes. According to its high-resolution value, FOM value, high wavelength, and amplitude sensitivity with low confinement loss, it can be said that this modified sensor will be implemented in the field of biosensing.