Author Affiliations
Abstract
1 Nano-photonics and Optoelectronics Research Laboratory (NORLab), Shahid Rajaee Teacher Training University, Lavizan 16788-15811, Tehran, Iran
2 Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Lavizan 16788-15811, Tehran, Iran
In this paper, we have proposed a metal-insulator-metal (MIM) pressure sensor which consists of two plasmonic waveguides and a double square ring resonator. The two square rings are connected via a rectangular patch located between the two of them. The surface plasmon polaritons (SPPs) can be transferred from a square ring to the other through this patch. The finite-difference time-domain method (FDTD) has been used to simulate the device. Applying a pressure on the structure, it deforms, and a red shift of 103 nm in the resonance wavelength has been calculated. The deformation is linearly proportional to the wavelength shift in a wide range of wavelength. The proposed optical plasmonic pressure sensor has a sensitivity of 16.5 nm/MPa which makes it very suitable for using in biological and biomedical engineering.
Pressure sensor plasmonic resonator square ring resonator MIM structure surface plasmon polaritons Photonic Sensors
2018, 8(3): 03242
