A novel temperature and salinity discriminative sensing method based on forward Brillouin scattering(FBS)in 1060-XP single-mode fiber(SMF)is proposed.The measured frequency shifts corresponding to different radial aco...A novel temperature and salinity discriminative sensing method based on forward Brillouin scattering(FBS)in 1060-XP single-mode fiber(SMF)is proposed.The measured frequency shifts corresponding to different radial acoustic modes in 1060-XP SMF show different sensitivities to temperature and salinity.Based on the new phenomenon that different radial acoustic modes have different frequency shift-temperature and frequency shift-salinity coefficients,we propose a novel method for simultaneously measuring temperature and salinity by measuring the frequency shift changes of two FBS scattering peaks.In a proof-of-concept experiment,the temperature and salinity measurement errors are 0.12℃and 0.29%,respectively.The proposed method for simultaneously measuring temperature and salinity has the potential applications such as ocean surveying,food manufacturing and pharmaceutical engineering.展开更多
Friedrich Hayek w as reputed as the most influential liberalist in the 20th centry.He adopted macroscopic,multi-subjects know ledge as w ell as a methodology w ith a less-moral principal to reassert and consolidate th...Friedrich Hayek w as reputed as the most influential liberalist in the 20th centry.He adopted macroscopic,multi-subjects know ledge as w ell as a methodology w ith a less-moral principal to reassert and consolidate the understanding of freedom.T he follow ing article,quoting some of his arguments and major methodologies w hich he based on,presents the general thoughts of forming C onstitution.展开更多
基金supported by the Na-tional Natural Science Foundation of China(Nos.62175105,61875086)Fundamental Research Funds for the Cen-tral Universities of China(No.ILB240041A24)。
文摘A novel temperature and salinity discriminative sensing method based on forward Brillouin scattering(FBS)in 1060-XP single-mode fiber(SMF)is proposed.The measured frequency shifts corresponding to different radial acoustic modes in 1060-XP SMF show different sensitivities to temperature and salinity.Based on the new phenomenon that different radial acoustic modes have different frequency shift-temperature and frequency shift-salinity coefficients,we propose a novel method for simultaneously measuring temperature and salinity by measuring the frequency shift changes of two FBS scattering peaks.In a proof-of-concept experiment,the temperature and salinity measurement errors are 0.12℃and 0.29%,respectively.The proposed method for simultaneously measuring temperature and salinity has the potential applications such as ocean surveying,food manufacturing and pharmaceutical engineering.
文摘Friedrich Hayek w as reputed as the most influential liberalist in the 20th centry.He adopted macroscopic,multi-subjects know ledge as w ell as a methodology w ith a less-moral principal to reassert and consolidate the understanding of freedom.T he follow ing article,quoting some of his arguments and major methodologies w hich he based on,presents the general thoughts of forming C onstitution.
