Extinction Ratio Improvement of LiNbO3 Integrated Optical Interferometers by Photorefractive Tuning of Y-branches

Mikhail V. Parfenov,Aleksandr V. Tronev, Aleksei N. Petrov,Piotr M. Agruzov,Igor V. Ilichev,Aleksandr V. Shamrai

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)（2019）

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摘要

The possibility to improve extinction ratio of an integrated optical Mach-Zehnder interferometer was investigated. A local LiNbO3 substrate modification by photorefractive effect was used for tuning the splitting ratio of Y-branches and balancing the power in the arms of interferometer.

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关键词

integrated optics,Mach-Zehnder interferometer,Y-branch,extinction ratio,photorefractive effect,lithium niobate

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