氧化物单模脊形光波导分束器的优化设计及制作  

Optimizing design and fabrication of an oxide single-mode ridge waveguide splitter

作　　者：段金燕 张何丽 任一涛 DUAN Jin-yan, ZHANG He-li, REN Yi-tao(School of Physics and Astronomy, Yunnan University, Kunming 650091, China)

机构地区：[1]云南大学物理与天文学院物理系,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2018年第6期1139-1147,共9页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金资助(61465015)

摘　　要：通过改进光波导的有效折射率法(EIM)方法,定义新的归一化参量,得出了脊形光波导模式归一化本征方程及单模条件的简单表达式.新的脊形光波导单模条件突破了以往理论对归一化外脊高(r)的限制,允许脊形光波导的参数r的取值进入r<0.5的范围,据此设计制作了单模工作的氧化物脊形光波导.新定义的归一化参量对分析计算脊形光波导具有通用性,为优化设计脊形光波导及其单模结构参数提供了便利性和更大的灵活性.Effective index method using analyzing optical waveguides is improved by defining a new group of normalized parameters,which the simpler expressions of the normalized eigen equation and the single mode condi- tion are achieved for ridge waveguides.The new single mode condition breaks the theory limit used for the normal- ized height （r） before ,which permits（r〈0.5） ,thereafter, an oxide single-mode ridge waveguide is designed and fabricated.The new defined normalized parameters are versatile for analyzing and calculating ridge waveguides, which provides more convenience and flexibility for optimal designing ridge waveguides and their structure param- eter of the single mode ridge waveguides.

关 键 词：脊形光波导 有效折射率法 单模条件 归一化参量 

分 类 号：O436[机械工程—光学工程]