Surface plasmon polaritons(SPPs)are crucial for the development of next generation information and communication technologies.However,the ohmic losses inherent to all plasmonic devices seriously limit their practical ...Surface plasmon polaritons(SPPs)are crucial for the development of next generation information and communication technologies.However,the ohmic losses inherent to all plasmonic devices seriously limit their practical application in on-chip photonic communications.Here,loss compensation of SPPs and their application in photonic logic processing was demonstrated in rationally designed organic/silver nanowire heterostructures.The heterostructures were synthesized by inserting silver nanowires(AgNWs)into crystalline organic microwires,which served as a microscale optical gain medium.These heterostructures with large organic/metal interfacial areas ensured the efficient energy transfer from excitons to SPPs.Gain for subwavelength SPPs in the heterostructure was achieved through stimulated emission of strongly confined SPPs.Furthermore,cascade gain was performed to realize basic nanoscale photonic devices,such as Boolean logic units.The results would pave an alternative avenue to incorporating SPP-enhanced devices into hybrid photonic circuitry.展开更多
AC / DC converter is a kind of devices applicable to reactive power compensation. Three parameters including losses, Total Harmonic Distortion （THD） and compensation capacity have important role in designing procedu...AC / DC converter is a kind of devices applicable to reactive power compensation. Three parameters including losses, Total Harmonic Distortion （THD） and compensation capacity have important role in designing procedure that these parameters are affected by the firing angle. Consideration trade of between these parameters can cause be selected suitable firing angle for optimal working of the compensator. In this paper is defined an objective function which includes the above parameters. This objective function is optimized through appropriate weighting factor for any parameters and the optimal firing angle will be obtained. So, the mention parameters can be selected optimally.展开更多
基金supported by the Ministry of Science and Technology of China(2017YFA0204502)the National Natural Science Foundation of China(21533013 and 21790364)。
文摘Surface plasmon polaritons(SPPs)are crucial for the development of next generation information and communication technologies.However,the ohmic losses inherent to all plasmonic devices seriously limit their practical application in on-chip photonic communications.Here,loss compensation of SPPs and their application in photonic logic processing was demonstrated in rationally designed organic/silver nanowire heterostructures.The heterostructures were synthesized by inserting silver nanowires(AgNWs)into crystalline organic microwires,which served as a microscale optical gain medium.These heterostructures with large organic/metal interfacial areas ensured the efficient energy transfer from excitons to SPPs.Gain for subwavelength SPPs in the heterostructure was achieved through stimulated emission of strongly confined SPPs.Furthermore,cascade gain was performed to realize basic nanoscale photonic devices,such as Boolean logic units.The results would pave an alternative avenue to incorporating SPP-enhanced devices into hybrid photonic circuitry.
文摘AC / DC converter is a kind of devices applicable to reactive power compensation. Three parameters including losses, Total Harmonic Distortion （THD） and compensation capacity have important role in designing procedure that these parameters are affected by the firing angle. Consideration trade of between these parameters can cause be selected suitable firing angle for optimal working of the compensator. In this paper is defined an objective function which includes the above parameters. This objective function is optimized through appropriate weighting factor for any parameters and the optimal firing angle will be obtained. So, the mention parameters can be selected optimally.
