Design of strain-introduced MZI interleaver on LiNbO_3 substrate  

作　　者：郑燕琳 陈开鑫 谢璐雯 

机构地区：[1]College of Communication and Information Engineering, University of Electronic Science and Techonolgy of China

出　　处：《Optoelectronics Letters》2013年第1期4-8,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.61177054)

摘　　要：A strain-introduced Mach-Zehnder interferometer (MZI) interleaver on lithium niobate (LiNbO3 ) is proposed. The structure of the strain-introduced waveguide is designed in detail, and is produced by depositing a SiO2 film on the annealed proton-exchanged LiNbO3 waveguide. Considering the sensitivities of the edge strain to the deposition temperature and the thickness of the SiO2 film, an optimum design of 50 GHz interleaver on this structure is given through analyzing the effective index changes for E x pq mode by finite difference method (FDM). The length of the bending waveguide in this interleaver is just two thirds of that in the conventional interleaver due to the high refractive index difference.A strain-introduced Mach-Zehnder interferometer （MZI） interleaver on lithium niobate （LiNbO3） is proposed. The struc- ture of the strain-introduced waveguide is designed in detail, and is produced by depositing a SiO~ film on the annealed proton-exchanged LiNbO3 waveguide. Considering the sensitivities of the edge strain to the deposition temperature and the thickness of the SiO2 film, an optimum design of 50 GHz interleaver on this structure is given through analyzing the effective index changes for E＇eq mode by finite difference method （FDM）. The length of the bending waveguide in this interleaver is just two thirds of that in the conventional interleaver due to the high refractive index difference.

关 键 词：优化设计 交织器 铌酸锂 MACH-ZEHNDER干涉仪 应变 LINBO3波导 基板 退火质子交换 

分 类 号：TN929.11[电子电信—通信与信息系统]