A novel low-loss electro-optic Ti–LiNbO3 TE–TM mode converter is demonstrated. The polarization conversion is not wavelength selective. Extremely high conversion efficiency with an extinction ratio of more than 33 dB has been achieved with 7-V drive. The device is made immune from the optical damage and Li2O outdiffusion problems typically associated with LiNbO3 devices by the use of a z-propagation waveguide.
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Suwat Thaniyavarn (1986) studied this question.
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