摘要
利用变分有效折射率法计算了TE基模和高阶模的光场分布,计算结果表明,该方法计算量小,精度高,为聚合物集成光电子器件中脊形光波导的理论分析与优化设计提供了简单高效的途径。利用有限差分束传播法对Mach-Zehnder波导的传播及损耗特性进行了理论分析,得到了不同Y分支角、波导宽度、波导间距时波导传输功率与距离的关系,优化得到的结构参数为:Y分支角1.1°,脊宽5μm,波导间距20μm。
Polymeric Mach-Zehnder rib waveguide is an important component in polymeric integrated electro-optic devices.A new technique is used for computing the optical field distribution of the fundamental and higher order modes for TE modes of a polymeric Mach-Zehnder rib waveguide.The technique is based on the combination of the effective index method and the variational method,and has advantages such as high precision,low calculation complexity and high efficiency,which can provide theoretical reference and optimization method for the fabrication of polymeric electro-optic devices.Important parameters of the waveguide are discussed and their relations with the optical power propagation and loss characteristics are investigated by using the finite difference beam propagation method.The optimized structure parameters are obtained： Y-junction angle is 1.1°,rib width is 5 μm,separation gap is 20 μm.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2011年第1期161-164,共4页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(60736038
60908024)
国家高技术发展计划项目
电子科技大学引进人才资助课题(Y02002010501044)
中央高校基本科研业务费资助课题(ZYFZ2009J059)
关键词
集成光学
电光聚合物
脊形波导
有效折射率法
变分法
有限差分束传播法
integrated optics
electro-optic polymer
rib waveguide
effective index method
variational method
finite-difference beam propagation method
