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Research On Photonic Devices Based On Surface Plasmon Resonance

Posted on:2019-03-08Degree:MasterType:Thesis
Country:ChinaCandidate:B WangFull Text:PDF
GTID:2348330566464268Subject:Information and Communication Engineering
Abstract/Summary:PDF Full Text Request
The surface plasmon polaritons was interacted at the same frequency and induce electromagnetic oscillations at the interface.SPPs has the characteristics of near field enhancement,subwavelength localization and focusing,super-resolution imaging.These properties are widely used in high sensitivity sensing,subwavelength waveguides,high resolution optical microscopy,nano lithography,metamaterials and other fields.With the deepening of theoretical research and the progress of processing technology,surface plasmon plays an important role in integrating optics,chemistry and biology.At present,SPPs theory has become one of the most valuable theories in Photonics.This thesis studied the surface plasmon resonance(SPR)technology of the devices,and proposed two novel surface plasmon resonance devices.The full vector finite element method and Rigorous Coupled Wave Analysis method is used to analyze and study the related characteristics.We proposed a photonic crystal fiber(PCF)polarization beam splitter based on surface plasmon resonance,and the other is a grating coupled graphene sensor based on surface plasmon resonance.The major contents are as follows:1.In this paper,the development of surface plasmon polaritons,basic theory,characteristics,excitation method and numerical research method are briefly introduced,which lays a theoretical foundation for the design and simulation of related devices based on surface plasmon resonance technology.2.Several commonly used theoretical analysis methods of PCF are described,then the basic principles of full-vector finite element method(FEM)and the Rigorous Coupled Wave Analysis method(RCWA)are also introduced.The theory of photonic crystal fiber and grating coupling based on surface plasmon resonance is introduced.3.A photonic crystal fiber based polarization splitter is studied.With the combination of SPR technology and PCF,a dual-core photonic crystal fiber polarization beam splitter based on the gold filling operating in the optical communications band is proposed.The effective refractive index of the dual-cores at different wavelengths is simulated to calculate the coupling length,extinction ratio and-20 dB-ER bandwidth.4.A grating coupled graphene sensor model based on surface plasmon resonance is proposed.The sensitivity of the sensor is studied by FEM and RCWA methods.This thesis analyzes the sensing of refractive indices of gas and liquid samples in the mid-infrared band,and the influences of grating period,duty cycle,and the graphene Fermi level on the refractive-index sensitivity and figure of merits are analyzed.
Keywords/Search Tags:Surface Plasmon Resonance, Rigorous Coupled Wave Analysis, Photonic Crystal Fiber, Polarization Beam Splitter, Graphene Sensor
PDF Full Text Request
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