An Optical MIM Pressure Sensor Based on a Double Square Ring Resonator

• 来源期刊: 光子传感器（英文版）
• 关键词: Pressure sensor plasmonic resonator square ring resonator MIM structure surface plasmon polaritons
• 年，卷（期）: 2018,（3）
• 页码范围: 242-247
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s13320-018-0491-z

摘要

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 16.5nm/MPa which makes it very suitable for using in biological and biomedical engineering.