It fits smd surface crystal , optic crystal , optic glass , semiconductor silicon slice , quartz crystal slice , piezoelectricity porcelain , arsenide gallium , linb03 , molybdenum slice and metal , nonmetal brittleness material both single side polishing and rubbing of pressurizing cmponets 本机主要适用于硅片、石英晶片、 smd表面贴装晶体、光学水晶、铌酸锂、玻璃、陶瓷片等薄脆金属或非金属材料的双面研磨或抛光。
In this paper , ti : linbo3 interference optical switch is designed and fabricated , the aim of this study is to achieve novel structure , and good performance integrated optical device and fish out the experience of design and fabrication of lithium niobate devices 本论文研究了干涉型铌酸锂基光开关器件。其目的是通过合理、有效的器件设计和对制作工艺的改进，实现结构较新颖、器件性能优良的集成光学器件。
We studied the mechanism of the visible light - induced domain switching in the lithium niobate crystals , and considered that the main factor is the movement of light - induced carrier , which modified the local electric field in the crystals and then resulted in the reduction of the domain switching voltage 探寻了可见光诱导铌酸锂晶体畴反转的形成机制，认为光诱导晶体畴反转的主要原因是光激载流子迁移改变了晶体内部的局域电场，造成了晶体极化反转电压的降低。
The waves should be sheared waves for the anisotropic aeo device and longitudinal waves for the isotropic aeo device . geometrical relationships of anisotropic acousto - optic effect in ln crystal and kdp crystals are studied by tangent - match condition . curves of incident angle vs . abaxial angle , diffractive angle vs . abaxial angle , extreme frequency vs . abaxial angle and acousto - optic merit vs . incident angle vs . abaxial angle are systematically gained and the design parameters are also calculated 利用相切-匹配条件法研究了铌酸锂晶体及kdp晶体的反常声光互作用几何关系,系统地得到了以离轴角为自变量的各参数的计算公式及相应的关系曲线,通过数值分析方法给出了声光优值随中心频率的变化曲线并给出了器件的设计参数。
The beam steering theory is studied to solve the problem that we can not get wider 3db bragg bandwidth and high diffraction efficiency at the same time in the optimum design of ln anisotropic acousto - optic deflector ( aod ) which is a crucial issue in the process to design an ao deflector . based upon the study of the unit cell structure of ln , the acoustic property and the optical property and the acousto - optic property are analyzed and presented 以最根本的铌酸锂晶体晶胞结构为出发点对铌酸锂晶体的声学、光学以及声光性质进行了推导和描述。并以此为基础利用克里斯托夫方程计算铌酸锂晶体中分别在xoz与yoz声光互作用平面上的本征速度与声离轴角之间的关系,并给出倒速度曲线。
After analyzing the characteristics of the lithium niobate crystal and the principle of electro - optic phase modulation & the coupling of single - mode fiber with optical waveguide , the fabrication of the single - mode lithium niobate bar waveguide and v - groove has been studied , the new project in which the lithium niobate v - groove is used for the coupling of the single - mode fiber with optical waveguide is put forward 在分析了铌酸锂晶体的相关特性、电光相位调制的基本原理以及单模光纤和光波导的对接耦合以后,研究了单模铌酸锂条形波导和铌酸锂v型槽的制作工艺,提出了使用铌酸锂v型槽实现单模光纤与波导耦合的方案。
With the existing condition , the bar waveguide on the lithium niobate wafer with liquid phase proton - exchanged method has been fabricated and the benzoic acid is used as the proton source . a series of research on the domain inversion in lithium niobate crystal with proton - exchanged method have been done . and then the operation and the process of domain inversion in lithium niobate crystal with proton - exchanged method has been used 实验方面,利用实验室现有条件,在铌酸锂晶片上以苯甲酸为质子源,用液相质子交换法制作了条形波导;对用质子交换法实现铌酸锂晶体畴反转进行了一系列实验研究,在此基础上提出了质子交换法实现铌酸锂晶体畴反转的工艺过程,实现了畴反转并腐蚀得到了v型槽;设计制作了带尾纤的电光相位调制器,最后进行封装。
The physical meaning for each of the term in the coupling coefficient is stated . in particular , we advance firstly ( as far as our knowledge ) , that the birefringence can cause additional coupling for the directional coupler . then , taking the ti - diffused linbo3 directional coupler and the ti - diffused linbo3 with gradient refractive index for examples , we make the numerical simulation for the coupling coefficient or the propagation constant , which prove that the birefringence has played a crucial effect on the propagation constant and the coupling between the modes that we can not neglect 第二，我们推导出了弱导近似下各向异性光波导在任意微扰下的非正交耦合模理论，得到了物理意义鲜明的耦合波方程和耦合系数表达式，指明了耦合系数所包含的四项各自的物理意义及在不同条件下的取舍，首次提出在方向耦合器中双折射将引起附加的耦合，并以钛扩散铌酸锂方向耦合器和折射率渐变分布的钛扩散铌酸锂矩形波导为例对耦合系数进行了数值模拟，充分体现了双折射项对传播常数的影响。
Lithium niobate phase modulator has been widely used in the fiber communication , fiber sensing and some other areas . in fabricating of the device , some key technologies including the waveguide , v - groove , coupling , packing and the reliability of the device are very important in improving the performance of the device 铌酸锂相位调制器已经广泛应用于光纤通信、光纤传感等众多领域,而在器件的生产过程中,波导制作、 v型槽制作、器件耦合封装及可靠性等几项关键技术对器件整体性能的提高至关重要。
By solving the christoffel equation , the relationship between velocity and angles is obtained , and the ultrasonic inverse velocity curve is illustrated . the dixon equations of ao diffraction on the xoz and yoz planes in ln crystal have been applied to obtain the geometric relationships of acousto - optic interaction . therefore , the beam steering theory is proved to be a possible way to do the optimum design of ln anisotropic acousto - optic deflector . the detailed parameter data and the figures on the xoz and yoz planes with the angle of incidence of - 5 degree are shown up , which will contribute to the desigh of aod 对铌酸锂超声跟踪反常声光偏转器进行优化设计,经研究计算得到了分别在入射角取- 5o时xoz与yoz工作平面中正负一级衍射中分别使用快切变波与慢切变波的情况下,优化设计铌酸锂超声跟踪反常声光偏转器的设计参数,对声光偏转器生产设计有实际参考意义。
