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gradient index
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  gradient index
Inverse method for the reconstruction of refractive index profile and power management in gradient index optical waveguides
      
Secondary bistable solitons have been calculated for a non-linear optical inhomogeneous medium with parabolic gradient index and quadratic intensity-dependent refractive index change.
      
Secondary bistable solitons in non-linear gradient index media
      
The new possibilities of controlled nonlinear evaluation of short pulses in gradient index optical fibres, connected with the fundamental and higher modes of the fibre geometry and with the pulse envelope are analysed.
      
The nonlinear dynamical stabilization of ps-pulses in gradient index optical fibres
      
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Laboratory method and process used to deposit the gradient index antireflective glass films of Na_2O-B_2O_3-SiO_2 system by the sol-gel method are discussed. These glass films are of porous micro-structure and process smaller density and refractive index than the substrates. The refractive index of the film shows gradient variation after being heat-treated and chemically treated. Thus, the glass films have an antireflective effect in a wide wavelength range. The films are used in solar...

Laboratory method and process used to deposit the gradient index antireflective glass films of Na_2O-B_2O_3-SiO_2 system by the sol-gel method are discussed. These glass films are of porous micro-structure and process smaller density and refractive index than the substrates. The refractive index of the film shows gradient variation after being heat-treated and chemically treated. Thus, the glass films have an antireflective effect in a wide wavelength range. The films are used in solar energy system and increase the efficiency of solar energy batteries by ten percent. The effects of the film thickness are also discussed. Thermal analysis and infrared absorption spectrum measurements were made to study the gel-to-glass conversion process. The sintering process is discussed following open-pore model.

本文讨论了用溶胶-凝胶法制备Na_2O-B_2O_3-SiO_2系统梯度折射率减反射膜的实验方法。这类玻璃膜具有多孔的微观结构,拥有比基玻璃更小的密度和折射率,膜中微孔结构经过热处理和化学处理后,使薄膜的折射率呈现梯度变化,玻璃涂层在宽的波长范围内起到减反射作用。将它应用于太阳能电池系统中可提高电池效率10%。 文中讨论了膜的厚度影响因素。应用热分折、红外吸收光谱研究了凝胶转化为玻璃的过程,应用开口气孔模型讨论了烧结过程.

Based on geometrical optics and beam optics,the first-order design theo-ry of the reversal parabolic gradient-index rod lens used as the imaging elements and laser beam transformation elements(e. g laser collimators,focusing lens,laser diode-fiber coupler)is established systematically in this paper by using matrix optics.

本文从几何光学和光束光学出发,采用ABCD矩阵方法系统地论述了逆抛物型梯度折射率棒透镜用作微小成象器件及激光束变换元件(如激光准直、聚焦、激光-光纤耦合物镜)的一阶设计理论。

We have researched field distribution of plane waveguide changing index waveguide and fiber by light ray quantum equation 2.Because Hamiltonian in light ray quantum equation is gradient index,thus energy distribution in light field must be researched by light ray quantum theory.This paper shows general formula of energy distribution of light field by using probability density and probability flow density vector of quantum mechanics.It also proves that energy in light field obeys conservation...

We have researched field distribution of plane waveguide changing index waveguide and fiber by light ray quantum equation 2.Because Hamiltonian in light ray quantum equation is gradient index,thus energy distribution in light field must be researched by light ray quantum theory.This paper shows general formula of energy distribution of light field by using probability density and probability flow density vector of quantum mechanics.It also proves that energy in light field obeys conservation law

因为光线量子力学方程的光线哈密顿算符不表示能量,而是具有可变折射率的物理意义,因此应用光线量子论讨论波导中光场能量分布是一个有待研究的问题本文借鉴量子力学几率密度和几率密度矢量概念推导出光场能量分布的普遍性公式,并证明流线结构的光场中守恒定律的成立

 
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