Abstract. We present an optical fiber Fabry-Perot (F-P) temperature sensor based on metal welding technology. The fiber sensor is composed of a single-mode fiber and a metal capillary that are encapsulated by metal welding technology. The relationship between the cavity length and sensitivity is analyzed theoretically. The experimental results show that the sensitivity of the fabricated sensor reaches 3.85 nm / ° C when the F-P cavity length is 171 μm. In addition, the sensitivity of the F-P temperature sensor increases as the cavity length of the F-P temperature sensor decreases. The proposed sensor fabricated by metal welding technology has the advantages of a high sensitivity, simple fabrication, simple structure, and low cost.
{"title":"Optical fiber Fabry-Perot temperature sensor based on metal welding technology","authors":"Pei-Xian Chen, Yuehua Wu, Yaqi Wang","doi":"10.1117/1.JNP.17.026001","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026001","url":null,"abstract":"Abstract. We present an optical fiber Fabry-Perot (F-P) temperature sensor based on metal welding technology. The fiber sensor is composed of a single-mode fiber and a metal capillary that are encapsulated by metal welding technology. The relationship between the cavity length and sensitivity is analyzed theoretically. The experimental results show that the sensitivity of the fabricated sensor reaches 3.85 nm / ° C when the F-P cavity length is 171 μm. In addition, the sensitivity of the F-P temperature sensor increases as the cavity length of the F-P temperature sensor decreases. The proposed sensor fabricated by metal welding technology has the advantages of a high sensitivity, simple fabrication, simple structure, and low cost.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026001 - 026001"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42800852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jian-Jhou Zeng, Shuqi Hu, Lei Chen, Jianrong Yang, Jing He
Abstract. Bulk-layered materials were constructed into nanowall arrays, and their optical absorption properties were investigated by the finite-difference time-domain technique. The results showed that the nanowall array exhibits excellent absorption properties in both ultraviolet and visible bands. For WS2, MoS2, WSe2, MoSe2, and MoTe2, when the excitation wavelength increases to a certain value, the absorption begins to obviously decrease, and the corresponding excitation wavelength shows a redshift trend. However, the absorptivity of graphene nanowall arrays remains above 0.9 in the 350- to 1200-nm band. In addition, with similar structural parameters, the absorption properties of nanowall arrays are better than those of nanorod arrays. The change in the structural parameter and morphology can lead to an increase in the pore number, specific surface area, and multistage reflection and achieve optical absorption enhancement. Graphene nanowall arrays show excellent absorption properties by our experimental measurement.
{"title":"Design of graphene-like nanowall arrays and their optical absorption properties","authors":"Jian-Jhou Zeng, Shuqi Hu, Lei Chen, Jianrong Yang, Jing He","doi":"10.1117/1.JNP.17.026003","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026003","url":null,"abstract":"Abstract. Bulk-layered materials were constructed into nanowall arrays, and their optical absorption properties were investigated by the finite-difference time-domain technique. The results showed that the nanowall array exhibits excellent absorption properties in both ultraviolet and visible bands. For WS2, MoS2, WSe2, MoSe2, and MoTe2, when the excitation wavelength increases to a certain value, the absorption begins to obviously decrease, and the corresponding excitation wavelength shows a redshift trend. However, the absorptivity of graphene nanowall arrays remains above 0.9 in the 350- to 1200-nm band. In addition, with similar structural parameters, the absorption properties of nanowall arrays are better than those of nanorod arrays. The change in the structural parameter and morphology can lead to an increase in the pore number, specific surface area, and multistage reflection and achieve optical absorption enhancement. Graphene nanowall arrays show excellent absorption properties by our experimental measurement.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026003 - 026003"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46591538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Our proposed work analyzes and models the photonic crystal (PhC)-based elliptical ring resonator for detecting viral and bacterial infections. Optical sensors show extreme results as sensing devices. So, they are broadly accepted in the medical field for the rapid and effective diagnosis of diseases. Optical biosensors are designed to detect cancer, malaria, typhoid, tuberculosis, etc. The principle behind the working of optical biosensors is a shift in the peak resonance wavelength corresponding to the small changes in the refractive index values. Due to the rapid mutation and replication of viral pathogens in the human cell nucleus, there is high demand for sensors that provide accurate results for viral and bacterial diseases in seconds. Hence, optical biosensors can give results in a short amount of time with a high sensitivity. The proposed sensor achieved a high sensitivity of 881.25 nm / RIU for tuberculosis and 555.55 nm / RIU for hepatitis B. The quality factor and figure of merit is also calculated, and their values come out to be 624.37 and 346.38, respectively, in the case of typhoid and Bacillus cereus. The platform used for simulating the analytes is the finite-difference time-domain.
{"title":"Detection of viral and bacterial diseases using 2D photonic crystal-based elliptical ring resonator sensor","authors":"Archana Sahoo, A. Varshney","doi":"10.1117/1.JNP.17.026004","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026004","url":null,"abstract":"Abstract. Our proposed work analyzes and models the photonic crystal (PhC)-based elliptical ring resonator for detecting viral and bacterial infections. Optical sensors show extreme results as sensing devices. So, they are broadly accepted in the medical field for the rapid and effective diagnosis of diseases. Optical biosensors are designed to detect cancer, malaria, typhoid, tuberculosis, etc. The principle behind the working of optical biosensors is a shift in the peak resonance wavelength corresponding to the small changes in the refractive index values. Due to the rapid mutation and replication of viral pathogens in the human cell nucleus, there is high demand for sensors that provide accurate results for viral and bacterial diseases in seconds. Hence, optical biosensors can give results in a short amount of time with a high sensitivity. The proposed sensor achieved a high sensitivity of 881.25 nm / RIU for tuberculosis and 555.55 nm / RIU for hepatitis B. The quality factor and figure of merit is also calculated, and their values come out to be 624.37 and 346.38, respectively, in the case of typhoid and Bacillus cereus. The platform used for simulating the analytes is the finite-difference time-domain.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026004 - 026004"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46969279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinyue Chen, Zhiwei Zhao, X. Jia, Yan-Hu Yu, Yong Fang, Mengru Zhu, Z. Weng, W. Lei, S. B. Shafe, M. N. Mohtar
Abstract. Localized surface plasmon resonance (LSPR) can enhance the optical field density around the nanostructure to improve devices’ light absorption. Aluminum nanoparticles (Al NPs) were introduced into solar-blind photodetectors with carbon dots (CDs) as a photosensitive material. It is found that by inserting Al NPs into the device, the switching ratio, responsivity, and external quantum efficiency reached 125.9, 0.511 A/W, and 2.16, respectively, which has obvious improvement compared with CDs based photodetector. The results indicate that Al NPs have an apparent optimization effect on the performance of the CDs photodetector by stimulating LSPR, which improves the photoresponse ability of CDs. It is illustrated by finite difference time-domain method that Al NPs can constraint the light field energy and successfully stimulate LSPR.
{"title":"Localized surface plasmon enhanced carbon dots based solar-blind ultraviolet photodetectors by Al nanoparticles","authors":"Xinyue Chen, Zhiwei Zhao, X. Jia, Yan-Hu Yu, Yong Fang, Mengru Zhu, Z. Weng, W. Lei, S. B. Shafe, M. N. Mohtar","doi":"10.1117/1.JNP.17.026013","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026013","url":null,"abstract":"Abstract. Localized surface plasmon resonance (LSPR) can enhance the optical field density around the nanostructure to improve devices’ light absorption. Aluminum nanoparticles (Al NPs) were introduced into solar-blind photodetectors with carbon dots (CDs) as a photosensitive material. It is found that by inserting Al NPs into the device, the switching ratio, responsivity, and external quantum efficiency reached 125.9, 0.511 A/W, and 2.16, respectively, which has obvious improvement compared with CDs based photodetector. The results indicate that Al NPs have an apparent optimization effect on the performance of the CDs photodetector by stimulating LSPR, which improves the photoresponse ability of CDs. It is illustrated by finite difference time-domain method that Al NPs can constraint the light field energy and successfully stimulate LSPR.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026013 - 026013"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49619254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. El Mouncharih, R. Takassa, O. Farkad, A. Tchenka, F. Elfatouaki, E. Ibnouelghazi, D. Abouelaoualim
Abstract. A biosensor structure based on a ternary photonic crystal (TPC) containing a defect is designed and simulated. This proposed biosensor detects the concentration of glucose in human urine. Based on the transfer matrix method, we theoretically studied the transmission spectra through the TPC presuming blood samples with different refractive indices (RIs) infiltrated into the defect layer of the proposed structures. By varying the concentration of glucose in the urine, the RI of the urine is changed, which in turn changes the sensor’s output response; both transmission response and resonance wavelength are affected. We evaluated average sensitivity (S) for the number of periods at different values N for optimization purposes. Our results show that the biosensor has performance parameters for a period value N = 6. Indeed, a value of 1033 nm of full width at half maximum photonic bandgap can be observed with a S of 965 nm / RIU. The quality factor is 1892.542 and the figure of merit is 756.86 RIU − 1. The proposed biosensor can be a miniaturized structure with extreme sensitivity in the concentration of glucose detection models
{"title":"One-dimensional photonic crystal-based biosensor for the detection of glucose concentration in human urine","authors":"A. El Mouncharih, R. Takassa, O. Farkad, A. Tchenka, F. Elfatouaki, E. Ibnouelghazi, D. Abouelaoualim","doi":"10.1117/1.JNP.17.026007","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026007","url":null,"abstract":"Abstract. A biosensor structure based on a ternary photonic crystal (TPC) containing a defect is designed and simulated. This proposed biosensor detects the concentration of glucose in human urine. Based on the transfer matrix method, we theoretically studied the transmission spectra through the TPC presuming blood samples with different refractive indices (RIs) infiltrated into the defect layer of the proposed structures. By varying the concentration of glucose in the urine, the RI of the urine is changed, which in turn changes the sensor’s output response; both transmission response and resonance wavelength are affected. We evaluated average sensitivity (S) for the number of periods at different values N for optimization purposes. Our results show that the biosensor has performance parameters for a period value N = 6. Indeed, a value of 1033 nm of full width at half maximum photonic bandgap can be observed with a S of 965 nm / RIU. The quality factor is 1892.542 and the figure of merit is 756.86 RIU − 1. The proposed biosensor can be a miniaturized structure with extreme sensitivity in the concentration of glucose detection models","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026007 - 026007"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45975775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Dual-symmetry breakings including permittivity asymmetry and geometry asymmetry have been studied in all dielectric split-ring metamaterials supported bound states in the continuum. For any single symmetry breaking, the proposed metamaterials can support simultaneously dual quasi-bound states in the continuum (quasi-BICs). Multipolar decomposition reveals that dual quasi-BICs induced by permittivity asymmetry are both governed by magnetic dipole and electric quadrupole, whereas dual quasi-BICs induced by geometry asymmetry are governed by magnetic dipoles. Under the combined effect of the two types of symmetry breaking, it is found that the quasi-BIC can be weaken and vanished, which is different from enhanced quasi-BIC effect induced by a single symmetry breaking. In addition, asymmetric magnetic and electric field distributions can be realized by selecting different type of symmetry breaking, providing a new way of indirectly manipulating the localized magnetic fields. We show that dual-symmetry breakings point to a unique routine to analyze the physical mechanism of quasi-BICs, which furthermore provide a useful insight into their tuning behavior.
{"title":"Dual symmetry breaking tunable bound states in the continuum in all dielectric split ring metamaterials","authors":"Zhiqiang Hao, Wen Wang, Zhenlin Sun","doi":"10.1117/1.JNP.17.026010","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026010","url":null,"abstract":"Abstract. Dual-symmetry breakings including permittivity asymmetry and geometry asymmetry have been studied in all dielectric split-ring metamaterials supported bound states in the continuum. For any single symmetry breaking, the proposed metamaterials can support simultaneously dual quasi-bound states in the continuum (quasi-BICs). Multipolar decomposition reveals that dual quasi-BICs induced by permittivity asymmetry are both governed by magnetic dipole and electric quadrupole, whereas dual quasi-BICs induced by geometry asymmetry are governed by magnetic dipoles. Under the combined effect of the two types of symmetry breaking, it is found that the quasi-BIC can be weaken and vanished, which is different from enhanced quasi-BIC effect induced by a single symmetry breaking. In addition, asymmetric magnetic and electric field distributions can be realized by selecting different type of symmetry breaking, providing a new way of indirectly manipulating the localized magnetic fields. We show that dual-symmetry breakings point to a unique routine to analyze the physical mechanism of quasi-BICs, which furthermore provide a useful insight into their tuning behavior.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026010"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49367566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Metamaterial absorbers are widely used in the sensing field based on their rich resonance behaviors. So far, the applications of metamaterial absorbers in gas sensing have not been paid much attention by researchers. A single-mode narrow bandwidth THz metamaterial absorber is suggested and validated. An absorption peak is excited based on local surface polarization mode resonance and dielectric loss in the 2 to 36 THz band. In experiments, the hole array diameter R is increased, the absorption peak is increased from 0.51 to 0.66, and resonance position is moved to the high-frequency region. When the dielectric layer thickness h2 is increased, the absorption peak is increased from 0.51 to 0.57, and resonance position is moved to the low-frequency region. Similarly, when the dielectric layer thickness h3 is increased, the absorption peak is increased from 0.51 to 0.53, and resonance position is also moved to the low-frequency region. This metamaterial absorber exhibits the feasible for gas and liquid sensing.
{"title":"Optimized absorption performance of a terahertz single mode metamaterial for gas and liquid detection","authors":"Junzhang Zhu, Xuebo Zhang, M. Zhong","doi":"10.1117/1.JNP.17.026009","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026009","url":null,"abstract":"Abstract. Metamaterial absorbers are widely used in the sensing field based on their rich resonance behaviors. So far, the applications of metamaterial absorbers in gas sensing have not been paid much attention by researchers. A single-mode narrow bandwidth THz metamaterial absorber is suggested and validated. An absorption peak is excited based on local surface polarization mode resonance and dielectric loss in the 2 to 36 THz band. In experiments, the hole array diameter R is increased, the absorption peak is increased from 0.51 to 0.66, and resonance position is moved to the high-frequency region. When the dielectric layer thickness h2 is increased, the absorption peak is increased from 0.51 to 0.57, and resonance position is moved to the low-frequency region. Similarly, when the dielectric layer thickness h3 is increased, the absorption peak is increased from 0.51 to 0.53, and resonance position is also moved to the low-frequency region. This metamaterial absorber exhibits the feasible for gas and liquid sensing.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026009 - 026009"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48944857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Chiroptical effects, which include the dichroism of left and right circularly polarized light, can be observed in structures made up of nanoscale chiral elements. We introduce a holistically nondestructive tunable chiral perforated photonic crystal film. The structure exhibits a strong photon spin selection effect at a wavelength of 810 nm, resulting in a significant circular dichroism (CD) value. The origin of the chiral response is explained using linear superposition theory, and the authors also discovered a strong chirality near-field enhancement at 796 and 810 nm, which could be used in molecular chirality sensing and other fields. By adjusting related parameters, the unit structure can greatly impact the reflection spectrum of the CD value. These chiral photonic crystal films may have potential applications as polarization management devices in the future.
{"title":"Tunable circular dichroism based on chiral photonic crystals","authors":"Wanlu Bian, Guodong Zhu, Yurui Fang","doi":"10.1117/1.JNP.17.026015","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026015","url":null,"abstract":"Abstract. Chiroptical effects, which include the dichroism of left and right circularly polarized light, can be observed in structures made up of nanoscale chiral elements. We introduce a holistically nondestructive tunable chiral perforated photonic crystal film. The structure exhibits a strong photon spin selection effect at a wavelength of 810 nm, resulting in a significant circular dichroism (CD) value. The origin of the chiral response is explained using linear superposition theory, and the authors also discovered a strong chirality near-field enhancement at 796 and 810 nm, which could be used in molecular chirality sensing and other fields. By adjusting related parameters, the unit structure can greatly impact the reflection spectrum of the CD value. These chiral photonic crystal films may have potential applications as polarization management devices in the future.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026015 - 026015"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44172692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liqiang Zhang, Z. Zeng, Jiakang Shi, Kai Gao, D. Ge
Abstract. A method for the preparation of composites that allow the growth of ZnO nanorod structures on the full surface of porous silicon (polished surface, pore walls, and pore bottoms) is presented. The porous silicon is obtained by electrochemical etching of P-type silicon (100). The nanorods were grown in two steps: a sol–gel method and an oil bath method. The morphology of ZnO nanorods at different concentrations of the growth solution was investigated using scanning electron microscopy. X-ray diffraction confirmed the formation of ZnO hexagonal fibrous zincite structures. UV–Vis absorption spectroscopy confirmed that the composites possess good light absorption in the broad spectral region. In the wavelength range of 300 to 400 nm, the light absorption value of the porous silicon/zinc oxide (porous Si/ZnO) nanorods was increased by ~25% compared to that of the porous Si/ZnO films. The photoluminescence spectra confirmed the luminescence performance of the composites. Finally, the optical properties of the composites were further verified by simulation calculations.
{"title":"Growth and optical properties of ZnO nanorods on the full surface of porous silicon by sol–gel method and oil bath method","authors":"Liqiang Zhang, Z. Zeng, Jiakang Shi, Kai Gao, D. Ge","doi":"10.1117/1.JNP.17.026002","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026002","url":null,"abstract":"Abstract. A method for the preparation of composites that allow the growth of ZnO nanorod structures on the full surface of porous silicon (polished surface, pore walls, and pore bottoms) is presented. The porous silicon is obtained by electrochemical etching of P-type silicon (100). The nanorods were grown in two steps: a sol–gel method and an oil bath method. The morphology of ZnO nanorods at different concentrations of the growth solution was investigated using scanning electron microscopy. X-ray diffraction confirmed the formation of ZnO hexagonal fibrous zincite structures. UV–Vis absorption spectroscopy confirmed that the composites possess good light absorption in the broad spectral region. In the wavelength range of 300 to 400 nm, the light absorption value of the porous silicon/zinc oxide (porous Si/ZnO) nanorods was increased by ~25% compared to that of the porous Si/ZnO films. The photoluminescence spectra confirmed the luminescence performance of the composites. Finally, the optical properties of the composites were further verified by simulation calculations.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026002 - 026002"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44327125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. We study the multiple plasmon-induced transparencies (PIT) in the waveguide structure based on bulk Dirac semimetal (BDS) containing multiple side-coupled T-shaped cavities. Using the finite element method, we mainly investigate the transmission spectra, the transmission phase shifts, the delay times, and the magnetic field distributions of the two T-shaped cavities waveguide structure. It is shown that their transmission characteristics strongly depend on the geometric parameters of the waveguide structure. In addition, we discuss the effect of the Fermi level of BDS and the refractive index of the medium on the transmission spectrum of the two T-shaped cavities structure. To get more PIT peaks, we try to simulate the transmission spectrum of three T-shaped cavities waveguide structure. All the results about the multiple PIT phenomena may have some possible applications in designing lenses, high-capacity storage devices, and new filters.
{"title":"Tunable multiple plasmon-induced transparencies in multiple T-shaped cavities waveguide based on Dirac semimetals","authors":"Junya Chen, Huifang Zhang, Xin Gu, Ying He, Hongshi Ren","doi":"10.1117/1.JNP.17.026008","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026008","url":null,"abstract":"Abstract. We study the multiple plasmon-induced transparencies (PIT) in the waveguide structure based on bulk Dirac semimetal (BDS) containing multiple side-coupled T-shaped cavities. Using the finite element method, we mainly investigate the transmission spectra, the transmission phase shifts, the delay times, and the magnetic field distributions of the two T-shaped cavities waveguide structure. It is shown that their transmission characteristics strongly depend on the geometric parameters of the waveguide structure. In addition, we discuss the effect of the Fermi level of BDS and the refractive index of the medium on the transmission spectrum of the two T-shaped cavities structure. To get more PIT peaks, we try to simulate the transmission spectrum of three T-shaped cavities waveguide structure. All the results about the multiple PIT phenomena may have some possible applications in designing lenses, high-capacity storage devices, and new filters.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026008 - 026008"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44626062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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