聚合物波导M-Z调制器TM模的泰勒级数展开法研究

李晨; 廖进昆; 蒋亚东; 李伟; 陆荣国; 韩莉坤; 高宇

聚合物波导M-Z调制器TM模的泰勒级数展开法研究

电子科技大学光电信息学院,四川成都 610054

详细信息

通讯作者:
李晨

中图分类号: TN252-34
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出版历程
- 刊出日期: 2008-03-09

Taylor series expansion method for TM mode of polymer waveguide M-Z modulator

School of Optoelectronic Information,UESTC,Chengdu 610054,China

More Information

Corresponding author:
LI Chen

摘要

摘要: 根据聚合物脊型波导的结构特点，利用有效折射率法求出其横向折射率分布，将三维传播转化为二维传播，并从标量波动方程出发，在傍轴近似的情况下，采用Crank-Nicholson差分格式，得到了泰勒级数展开法基本计算格式，并对算法进行了适当优化；通过对Mach-Zehnder光波导TM模的模拟，分析了各种参数对损耗的影响。结果表明：泰勒级数展开法具有精度高、稳定性好、算法简单、易于编程等优点，是一种比较理想的光波导数值分析方法，可为聚合物电光调制器的设计制作提供理论参考。
- 电光聚合物 /
- Mach-Zehnder波导 /
- TM模 /
- 有效折射率法 /
- 泰勒级数展开法
Abstract: Mach-Zehnder waveguide is an important part in integrated optics. The transverse distribution of refractive index of polymeric ridge waveguide was calculated with the effective index method (EIM) and 3-D propagation was converted into 2-D propagation according to the structural characteristics of the polymeric ridge waveguide. Based on paraaxial scalar equation, using CrankNicholson scheme, the basic calculation scheme of Taylor series expansion method was obtained and optimized. By simulating the TM mode of a real Mach-Zehnder waveguide, the influence of various parameters on the loss was analyzed. The results show that this method is accurate, stable and easy to program.
- optoelectronic polymer /
- Mach-Zehnder waveguide /
- TM mode /
- effective index method /
- Taylor series expansion method