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An all-optical switch of Mach-Zehnder interferometer type using an active fibre ring resonator 下载免费PDF全文
We propose an all-optical switch of the Mach-Zehnder interferometer type using an active nonlinear ring resonator and analyse the significance of the parameter A, a product of gain and total loss, for performing an ideal 1 by 2 switch. We found that in the range of 1-κ≤A≤\sqrt{1-κ}, the increment of A can compensate the losses inside the ring, therefore increase the finesse of the ring and enhance the nonlinearity contribution to reduce the switching power threshold effectively. We also emphasize the importance of the initial switching point and discuss the feasibility of utilizing a high-nonlinear fibre in the ring. 相似文献
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Surface second harmonic generation of chiral molecules using three-coupled-oscillator model 下载免费PDF全文
Based on the three-coupled-oscillator molecular model we proposed, the
relation between the second-order susceptibilities of a chiral film and the
molecular hyperpolarizabilities is given. The effect of microscopic
parameters on the second-order susceptibilities is simulated numerically and
the difference between the efficiencies of s-polarized second-harmonic
fields induced by the left- and the right-handed circularly-polarized
fundamental beams is discussed. The theoretical basis for studying
second-order nonlinear optical properties of the chiral molecular media with
a tripod-like structure is provided in this paper. 相似文献
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基于螺旋单电子模型的手性分子的三阶非线性极化率 总被引:6,自引:1,他引:5
本文从螺旋手性分子单电子模型出发,推导手性分子的三阶光学非线性,给出螺旋手性分子三阶极化率张量元的解析表达式,并讨论分析了实际的螺旋分子的极化率张量的非零元素. 相似文献
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