In order to improve the performance of optical wavelength-selective switches based on double micro-ring resonators, an asymmetric intra-step-barrier coupled double strained quantum wells (AICD-SQWs) structure is utili...In order to improve the performance of optical wavelength-selective switches based on double micro-ring resonators, an asymmetric intra-step-barrier coupled double strained quantum wells (AICD-SQWs) structure is utilized as the active light guiding medium. The AICD-SQW active layer has advantages, such as large change range in absorption coefficient, high extinction ratio, large Stark shift and very low insertion. For predicting the switching characteristics of double ring resonators structure, the absorption coefficient and real refractive index changes of the AICD-SQW active layer are calculated for different applied electric fields for TE input light polarization. Simulation results show that switching characteristics strongly depend on changes in absorption coefficient and real refractive index of active layer. In addition, isolations of 37.44 dB and 26.84 dB are realized between drop and through ports, when drop and through ports are ON and OFF, respectively, and vice versa.展开更多
The time evolution of the linear entropy of an taking into consideration Stark shift and Kerr-like medium. atom in k-photon daynes-Cummings model is investigated The effect of both the Stark shift and Kerr-like medium...The time evolution of the linear entropy of an taking into consideration Stark shift and Kerr-like medium. atom in k-photon daynes-Cummings model is investigated The effect of both the Stark shift and Kerr-like medium on the linear entropy is analyzed using a numerical technique for the field initially in coherent state and in even coherent state. The results show that the presence of the Kerr-like medium and Stark shift has an important effect on the properties of the entropy and entanglement. It is also shown that the setting of the initial state plays a significant role in the evolution of the linear entropy and entanglement.展开更多
O431 98052801牛顿的光学思想及其影响=Newton’s viewpoinlof optics and its influence[刊,中]/姚春梅(常德师范专科学校物理系。湖南,常德(415000)。文定忠、王成宇(常德广播电视大学。湖南,常德(415000))∥大学物理。—1997,16(4)。...O431 98052801牛顿的光学思想及其影响=Newton’s viewpoinlof optics and its influence[刊,中]/姚春梅(常德师范专科学校物理系。湖南,常德(415000)。文定忠、王成宇(常德广播电视大学。湖南,常德(415000))∥大学物理。—1997,16(4)。—3l—33介绍了有关牛顿的光学思想及其评价。参4(严兰)O431 98052502光钳的力学原理=Mechanics principle of opticalclamps[刊,中]/袁银权(孝感师范专科学校物理系。湖北,孝感(432100))∥大学物理。—1997,16(11)。—展开更多
文摘In order to improve the performance of optical wavelength-selective switches based on double micro-ring resonators, an asymmetric intra-step-barrier coupled double strained quantum wells (AICD-SQWs) structure is utilized as the active light guiding medium. The AICD-SQW active layer has advantages, such as large change range in absorption coefficient, high extinction ratio, large Stark shift and very low insertion. For predicting the switching characteristics of double ring resonators structure, the absorption coefficient and real refractive index changes of the AICD-SQW active layer are calculated for different applied electric fields for TE input light polarization. Simulation results show that switching characteristics strongly depend on changes in absorption coefficient and real refractive index of active layer. In addition, isolations of 37.44 dB and 26.84 dB are realized between drop and through ports, when drop and through ports are ON and OFF, respectively, and vice versa.
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10674038, 10604042National Basic Research Program of China under Grant No. 2006CB302901
文摘The time evolution of the linear entropy of an taking into consideration Stark shift and Kerr-like medium. atom in k-photon daynes-Cummings model is investigated The effect of both the Stark shift and Kerr-like medium on the linear entropy is analyzed using a numerical technique for the field initially in coherent state and in even coherent state. The results show that the presence of the Kerr-like medium and Stark shift has an important effect on the properties of the entropy and entanglement. It is also shown that the setting of the initial state plays a significant role in the evolution of the linear entropy and entanglement.
文摘O431 98052801牛顿的光学思想及其影响=Newton’s viewpoinlof optics and its influence[刊,中]/姚春梅(常德师范专科学校物理系。湖南,常德(415000)。文定忠、王成宇(常德广播电视大学。湖南,常德(415000))∥大学物理。—1997,16(4)。—3l—33介绍了有关牛顿的光学思想及其评价。参4(严兰)O431 98052502光钳的力学原理=Mechanics principle of opticalclamps[刊,中]/袁银权(孝感师范专科学校物理系。湖北,孝感(432100))∥大学物理。—1997,16(11)。—
