A surface plasmon resonance(SPR) sensor with two orthogonal open loops based on microstructured optical fibers(MOFs) is introduced. The interaction between core mode and surface plasmon polariton(SPP) mode produced by...A surface plasmon resonance(SPR) sensor with two orthogonal open loops based on microstructured optical fibers(MOFs) is introduced. The interaction between core mode and surface plasmon polariton(SPP) mode produced by two different metal films is studied. Full vector finite element method is used to analyze the coupling and sensing characteristics.The results show that there are three loss peaks near the Au/Ag film, and multi-peak calibration is achieved. Because of the positive and negative sensitivity of the amplitude, the sensor has strong anti-interference capability when the external environment changes. The sensor can detect the refractive index between 1.37 and 1.40, and the working wavelength is between 1600 nm and 2400 nm. Because the sensor has some excellent characteristics, it can be used in biochemical sensing, environmental detection, and other related fields.展开更多
Hollow-core negative curvature fibers(HC-NCFs)have become one of the research hotspots in the field of optical fiber because of their potential applications in the data and energy transmissions.In this work,a new kind...Hollow-core negative curvature fibers(HC-NCFs)have become one of the research hotspots in the field of optical fiber because of their potential applications in the data and energy transmissions.In this work,a new kind of single-polarization single-mode HC-NCF with nested U-type cladding elements is proposed.To achieve the single-polarization single-mode transmission,we use two different silica tubes in thickness,which satisfy the resonance and anti-resonance conditions on the U-type cladding elements and the cladding tubes,respectively.Besides,the elliptical elements are introduced to achieve good single-mode performance.By studying the influences of the structure parameters on the propagation characteristics,the optimized structure parameters are obtained.The simulation results show that when the wavelength is fixed at 1550 nm,the single-polarization single-mode transmission is achieved,with the polarization extinction ratio of 25749 and minimum high-order mode extinction ratio of 174.Furthermore,the confinement loss is only 0.0015 dB/m.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61575066,61527822,and 61735005)the Natural Science Foundation of Guangdong Province,China(Grant No.2017A030313333)+4 种基金the Science and Technology Program of Guangzhou City,China(Grant No.201707010133)the Science and Technology Planning Project of Guangdong Province,China(Grant No.2017KZ010201)the GDUPS(2017)the Innovation Project of Graduate School of South China Normal University(Grant No.2018LKXM040)the SCNU Study Abroad Program for Elite Postgraduate Students,China
文摘A surface plasmon resonance(SPR) sensor with two orthogonal open loops based on microstructured optical fibers(MOFs) is introduced. The interaction between core mode and surface plasmon polariton(SPP) mode produced by two different metal films is studied. Full vector finite element method is used to analyze the coupling and sensing characteristics.The results show that there are three loss peaks near the Au/Ag film, and multi-peak calibration is achieved. Because of the positive and negative sensitivity of the amplitude, the sensor has strong anti-interference capability when the external environment changes. The sensor can detect the refractive index between 1.37 and 1.40, and the working wavelength is between 1600 nm and 2400 nm. Because the sensor has some excellent characteristics, it can be used in biochemical sensing, environmental detection, and other related fields.
基金supported by the National Natural Science Foundation of China(Grant No.61935007)。
文摘Hollow-core negative curvature fibers(HC-NCFs)have become one of the research hotspots in the field of optical fiber because of their potential applications in the data and energy transmissions.In this work,a new kind of single-polarization single-mode HC-NCF with nested U-type cladding elements is proposed.To achieve the single-polarization single-mode transmission,we use two different silica tubes in thickness,which satisfy the resonance and anti-resonance conditions on the U-type cladding elements and the cladding tubes,respectively.Besides,the elliptical elements are introduced to achieve good single-mode performance.By studying the influences of the structure parameters on the propagation characteristics,the optimized structure parameters are obtained.The simulation results show that when the wavelength is fixed at 1550 nm,the single-polarization single-mode transmission is achieved,with the polarization extinction ratio of 25749 and minimum high-order mode extinction ratio of 174.Furthermore,the confinement loss is only 0.0015 dB/m.
