Numerical Analysis of Multi-Parameter Plasmonic Optical Fiber Sensor Based on a Dual-D-shaped Hole

This work introduces a new design of a supremely dual-D-shaped hole (DDH) for a SMF channel. A pair of two sensors is constructed using silver (Ag) as a plasmonic fix on the ground of the sensor.To preserve from acidification, the silver is covered with aluminum-doped zinc oxide (AZO). Furthermore, the reduction in production expenditure along with improving the energy transfer of the core toward the plasma consequently leads to SPR improvement. Because of the large cladding SMF diameter, it can easily be fabricated into a highly sensitive sensor adopting the finite element method (FiEM) as an approach toward the desired performance of the optical fiber (OF) surface plasmon resonance (SPR). The proposed design can sense the upper and lower temperatures through the cavity channel as well as the index of refraction. This step occurs by structuring the D-hole at the top of Ag bimetallic, which is then coated with an AZO nanolayer.For extra sensing enhancement, the whole structure factors are investigated with the ability to use ethanol as a temperature solution medium measuring the index of refraction. Simulation results revealed that an extreme wavelength sensitivity could be achieved with 10800 nm/RIU at a temperature sensing of 1.8 nm⁄ffiC. Such findings were recorded with temperature and index of refraction ranges of 20-60ffiC and 1.38 to 1.41, respectively. Finally, such a dynamic technique has a promising sensing technology due to the advantage of being able to tune the parameters in a biosensing point of view.