欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
针对以新型材料石墨烯为膜片的光纤法珀压力传感器,应用圆薄膜大挠度弹性理论,利用有限元法分析了均布载荷下石墨烯膜的挠度形变;并基于Fabry-Perot干涉仪原理,建立了光纤Fabry-Perot腔压力传感的数学模型.根据石墨烯膜折射率特性,分析了层数、入射光角度等参数对石墨烯膜反射率的影响,获取了腔长损耗以及薄膜挠度形变导致腔长变化而引起的干涉光谱变化规律.仿真结果表明,增加薄膜层数可提高反射率、改善干涉性能;但随着载荷增加,其对挠度形变的影响表现为反向递减效应.8层石墨烯薄膜可获得0.715%的反射率,且当腔长为40μm时,直径25μm薄膜的理论压力灵敏度约为10 nm/k Pa.这为基于多层石墨烯的膜片式光纤压力传感器的设计提供了理论依据.
英文摘要：
With regard to the design of optical fiber Fabry-Perot cavity using graphene as sensitive diaphragm, the deflection change under uniformly distributed loads in graphene film was analyzed by finite element method based on the large deflection elastic theory of circular film. The pressure-sensing mathematical model of optical fiber Fabry-Perot cavity with graphene diaphragm was established based on the working principle of Fabry-Perot interferometer. The effects of graphene film layer and incident light angle on the film reflec- tivity were obtained according to the refractive index characteristics of the film. Then the interference spectra change, caused by both the cavity length losses and the film deflection deformations under the pressure loads, were analyzed. The simulation results show that adding the film layer can increase the film reflectivity and further improve the optical interference performance; however, a decreasing effect on the deflection deformation is caused by the film layer with the increase of pressure load. Thus, an 8 layer graphene film can achieve a reflectivity of 0. 715% and an approximate theoretical sensitivity of 10 nm/kPa for a 40 μm Fabry-Perot cavity length with a membrane diameter of 25 μm. It provides a theoretical basis for the design and fabrication of high-sensitivity fiber-tip pressure sensor with multiple-layer graphene diaphragm.
同期刊论文项目
同项目期刊论文
A multi-objective optimization based fuzzy control？for nonlinear spatially distributed processes wit
Low Loss Fusion Splicing Polarization-Maintaining Photonic Crystal Fiber and Conventional Polarizati
Reduced phase error of a fiber optic gyroscope using a polarization maintaining photonic crystal fib
Heart Motion Prediction in Robotic-Assisted Beating Heart Surgery: A Nonlinear Fast Adaptive Approac
Whirling modes stability criterion for a magnetically suspended flywheel rotor with significant gyro
Effect of Radiation-induced Mean Wavelength Shift in Optical Fibers on Scale Factor of Interferometr
A Quadratic Nonlinear Prediction-Based Heart Motion Model Following Control Algorithm in Robotic-Ass
Precise braking torque control for attitude control flywheel with small inductance brushless DC moto
Experimental investigation of pre-irradiation effect on radiation sensitivity of temperature sensing
Experimental Study and Implementation of a Novel Digital Closed-Loop Control System for Coriolis Mas
Research on the Dynamic Calibration of Thermocouple and Temperature Excitation Signal Generation Met
Distributed proportional plus second-order spatial derivative control for distributed parameter proc
Fuzzy output tracking control of semi-linear first-order hyperbolic PDE systems with matched perturb
Data-based suboptimal neuro-control design with reinforcement learning for dissipative spatially dis
Not Fully Overlapping Allan Variance and Total Variance for Inertial Sensor Stochastic Error Analysi
期刊信息
位置：