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Ti扩散LiNbO₃光波导折射率变化研究

Research on the Refractive-index Change Produced by the Ti-diffusion in LiNbO₃

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【Author】 ZHANG Fuwen, CHEN Fushen, QIU Kunn Networks,UESTC,Chengdu 610054,China)

【机构】电子科技大学宽带光纤传输与通信系统技术国家重点实验室；电子科技大学宽带光纤传输与通信系统技术国家重点实验室四川成都610054；四川成都610054；四川成都610054；

【摘要】就Ti扩散波导折射率的变化,从弹光效应和电光效应进行了详尽的讨论和分析,结果表明两种效应对折射率变化的贡献在同一数量级;就反转极化Ti扩散波导折射率的变化,从自发极化的角度出发,进行了验证和探讨,结果仍满足Δne>0和Δno>0。更多还原

【Abstract】 The refractiveindex change produced by the Tidiffusion was discussed using the mathods of photoelastic and electrooptical tensor matrixes.The results show that the two factors contributed to the refractiveindex change are in the same level.Then,the refractiveindex change in reversepoled LiNbO3 was validated and discussed based on spontaneous polarization,and the result shows that it satisfies the conditions of Δne>0 and Δno>0.更多还原