Polarization independent Ti:LiNbO/sub 3/ switches and filters

Integrated optic polarization independent switches on X-cut Ti:LiNbO/sub 3/ are realized. An interferometric switch on X-cut Z-propagating LiNbO/sub 3/ utilizes passive polarization independent intersecting waveguide 3 dB couplers. Polarization independent switches on X-cut Y-propagating LiNbO/sub 3/ based on polarization converters and intersecting waveguide couplers designed as passive polarization splitters are fabricated and investigated. Devices with an extinction ratio of 25 dB and low fiber coupled insertion losses of >

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