| 1. | Study of bidyig magneto - optical crystal materials used in fiber communication
用于光纤通信的bidyig磁光晶体材料研究 |
| 2. | In order to measuring the changes of optical polarization in magneto - optic crystals , it is necessary to establish an optical system in which the changes can be measured
为测定磁光晶体在大范围磁场下的光学偏振特性变化，必须搭建一个测量系统。 |
| 3. | As we know the theoretical basis of all magneto - optical devices are various kinds of magneto - optic effect , the changes of these optical characteristics will be influenced by the variation of the external magnetic field
由于各类磁光器件的理论基础是各种磁光效应，磁光晶体中这些光学特性受磁场影响的变化将会直接影响其工作性能。 |
| 4. | The optical system is established , in which the change of polarization state for magneto - optic crystal can be measured in continuous adjustable magnetic field ( 0 s1 . 5 t ) , and the method to improve test system is given
摘要搭建了磁光晶体的磁致偏振特性测试系统，此系统可在连续可调磁场下( 0 ~ 1 . 5t )对磁光晶体的磁致偏振特性进行测试。 |
| 5. | The theory on magneto - optic effect and the course of the research on magneto - optic crystals are discussed in the first chapter . being based on these , the idea of measuring the optical characteristics in varying magnetic field is brought about
在第一章绪论部分，对磁光效应理论的发展及磁光晶体的研制与应用进程进行了概述，基于国内外研究现状，提出在可调谐磁场下对磁光晶体的光学特性变化进行测量与研究。 |
| 6. | In order to improve the performance of magneto - optical devices , the most important method to obtain the ideal purpose is to research the optical characteristics of the crystals . in these latter years , many new magneto - optic materials have been produced
对改良磁光式器件而言，除对各分立器件组合及设计进行研制外，最重要也是最有可能获得理想结果的便是对作为其核心部件之一的磁光晶体的光学特性进行研究。 |
| 7. | In the optical communication system , the magneto - optic crystal is the most important part of magneto - optical devices , such as magneto - optic modulator , magneto - optic isolator , magneto - optic circulator and so on . the optical characteristics of the magneto - optic crystal will influence the working performance of the devices
磁光晶体在光通信用磁光式器件如磁光调制器、磁光隔离器、磁光环行器等中是其核心组成部分之一，它的光学特性直接关系到器件工作性能的优劣。 |
| 8. | In the second chapter , we explain the basic knowledge on magneto - optic effect and the progress of the magneto - optic materials in detail . first , the theory of faraday effect , magnetic circular dichroism , magnetic linear birefringence and kerr effect are argued . then the kinds of the magnetic materials and the magneto - optical devices are discussed
在磁光理论部分，分别对faraday效应与磁致圆二向色性、磁致线双折射与线二向色性、磁致克尔效应等磁光效应进行了理论推导与分析；在磁光晶体部分，对磁性材料的分类及部分重要的磁光器件进行了介绍。 |
| 9. | So the research on these new materials is becoming more and more important . we collected and analyzed the overseas and domestic sufficient date for the optical characteristics of magneto - optic crystal . then we bring forward a research topic in varying magnetic field on some crystals optical characteristics such as the angle of rotation , the depolarization ratio and so on
本文在对国内外有关磁光晶体光学特性研究状况进行调研之后，从外界磁场对晶体光学特性的影响这一角度出发，在大范围可调谐磁场下，对几种不同的磁光晶体的光学特性，诸如faraday旋转角、退偏度等进行了测定。 |
