Design and simulation of refractive index sensor based on suspended composite hybrid plasmonic waveguide for sensing mass density of polarizable hydrogen gas
Babak Moeinimaleki, Kaveh Moeinimaleki, Z. Mardani, S. Karamzadeh
{"title":"Design and simulation of refractive index sensor based on suspended composite hybrid plasmonic waveguide for sensing mass density of polarizable hydrogen gas","authors":"Babak Moeinimaleki, Kaveh Moeinimaleki, Z. Mardani, S. Karamzadeh","doi":"10.1117/1.JNP.17.036003","DOIUrl":null,"url":null,"abstract":"Abstract. Hybrid plasmonic waveguides (HPWs) are capable of supporting subwavelength optical modes. In a composite HPW (CHPW), the propagation loss can be minimized by adjusting the geometrical parameters of its component layers to reduce field flux inside its lossy metal layer. A ring resonator-based plasmonic sensor based on a waveguide structure of suspended CHPW (SCHPW) is designed for gas sensing applications. SCHPWs are applied for the introduced sensor’s 200-nm-wide bus waveguide and 1-μm-radius ring resonator. The operational parameters of the sensor, such as sensitivity and figure of merit (FOM), are investigated in the near-infrared region using a three-dimensional finite-difference time-domain method. For two considered resonances of the proposed sensor, sensitivities of 236.2 and 270 nm / RIU with FOMs of 67.4 and 37.5 RIU − 1 are achieved, respectively. Additionally, for the proposed sensor, a straightforward mechanism for sensing the mass density of the polarizable hydrogen gas is introduced using the theoretical index–density relation of Lorentz–Lorenz. The mass density sensitivities of 358.2 and 409.3 nm / ( g / cm3 ) are achieved for the two considered resonances for the hydrogen gas at the range of 0 to 0.05 g / cm3.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"036003 - 036003"},"PeriodicalIF":1.1000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanophotonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1117/1.JNP.17.036003","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NANOSCIENCE & NANOTECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract. Hybrid plasmonic waveguides (HPWs) are capable of supporting subwavelength optical modes. In a composite HPW (CHPW), the propagation loss can be minimized by adjusting the geometrical parameters of its component layers to reduce field flux inside its lossy metal layer. A ring resonator-based plasmonic sensor based on a waveguide structure of suspended CHPW (SCHPW) is designed for gas sensing applications. SCHPWs are applied for the introduced sensor’s 200-nm-wide bus waveguide and 1-μm-radius ring resonator. The operational parameters of the sensor, such as sensitivity and figure of merit (FOM), are investigated in the near-infrared region using a three-dimensional finite-difference time-domain method. For two considered resonances of the proposed sensor, sensitivities of 236.2 and 270 nm / RIU with FOMs of 67.4 and 37.5 RIU − 1 are achieved, respectively. Additionally, for the proposed sensor, a straightforward mechanism for sensing the mass density of the polarizable hydrogen gas is introduced using the theoretical index–density relation of Lorentz–Lorenz. The mass density sensitivities of 358.2 and 409.3 nm / ( g / cm3 ) are achieved for the two considered resonances for the hydrogen gas at the range of 0 to 0.05 g / cm3.
期刊介绍:
The Journal of Nanophotonics publishes peer-reviewed papers focusing on the fabrication and application of nanostructures that facilitate the generation, propagation, manipulation, and detection of light from the infrared to the ultraviolet regimes.