新型磁光器件的基础研究

发布时间：2018-10-31 20:17

【摘要】：磁光器件,特别是磁光器件的非互易特性,在光通信系统中和集成光学领域发挥着不可或缺的作用。随着光通信技术日益发展对各式器件提出更高的要求,磁光器件也在朝着小型化、集成化、智能化和功能化的方向不断地发展. 基于上述思想,本文的目的在于：基于磁光效应相关特性,研究了若干新型磁光器件结构,具体如下： 1.从磁光效应的宏观理论出发,阐述了磁光效应对材料光学物理特性磁导率μ、介电常数ε、电导率σ的影响。结合麦克斯韦方程组,简要分析了磁光效应能打破电磁波传输洛仑兹互易定理的原因,给出了在波导分析中经常用到的微扰理论分析公式。介绍了几种最为常见的磁光材料,并且对未来磁光材料的发展进行了探索。 2.分析了一种基于金属表面等离子波的磁光波导结构。该结构利用了SPPs对光场亚波长限制性以及它对周边介质光电物理特性的强敏感性,并利用缓冲层形成金属表面等离子波的混合模式降低了传播损耗,实现了此磁光波导结构有较高NRPS、长传播距离、强模式限制性的特点。 3.分析了一种多环串联型微环隔离器。在该结构中,我们利用多跑道环串联结构,从工艺上解决了磁场施加制作的难题。同时通过多环串联产生的平顶效应,保证了隔离器有小尺寸、高隔离度的特点,且能实现更宽隔离谱。 4.本文还对二维波导中理想导体边界条件进行了分析。在该分析方法中,我们将二维的良导体近似为理想边界,分析了有此类边界的波导结构,并与其他文献不同分析方法做比较,证明了其可行性。
[Abstract]:The nonreciprocal characteristics of magneto-optic devices, especially magneto-optical devices, play an indispensable role in optical communication systems and integrated optics. With the development of optical communication technology, magneto-optic devices are developing towards miniaturization, integration, intelligence and functionalization. Based on the above idea, the purpose of this paper is to study some new magneto-optic devices based on the magneto-optic effect correlation characteristics, as follows: 1. Based on the macroscopic theory of magneto-optic effect, the effects of magneto-optical effect on the permeability 渭, dielectric constant 蔚 and conductivity 蟽 of the material are discussed. Combined with Maxwell's equations, the reason why magneto-optic effect can break the Lorentz reciprocity theorem of electromagnetic wave transmission is briefly analyzed, and the analytical formula of perturbation theory, which is often used in waveguide analysis, is given. Some most common magneto-optic materials are introduced, and the development of magneto-optic materials in the future is explored. 2. A magneto-optic waveguide structure based on metal surface plasma wave is analyzed. The structure takes advantage of the SPPs's strong sensitivity to the optoelectronic physical properties of the surrounding dielectric, and reduces the propagation loss by using the mixed mode of the buffer layer to form the plasma wave on the metal surface, which is limited to the sub-wavelength of the light field and is sensitive to the photoelectric physical properties of the peripheral dielectric. The magneto-optical waveguide structure has the characteristics of high NRPS, long propagation distance and strong mode limitation. 3. A multi-ring series microloop isolator is analyzed. In this structure, we use the multi-runway ring series structure to solve the problem of making magnetic field. At the same time, the flat-top effect of multi-loop series is used to ensure that the isolator has the characteristics of small size and high isolation degree, and can realize wider isolation spectrum. 4. The boundary conditions of ideal conductors in two dimensional waveguides are also analyzed. In this method, the two-dimensional good conductor is approximated as the ideal boundary, and the waveguide structure with such boundary is analyzed, and compared with other analytical methods in other literatures, the feasibility of the method is proved.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.1

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