Layout for polarization insensitive modulation in LiNbO3 waveguides

Arkady Kaplan, Shlomo Ruschin

Research output: Contribution to journalArticlepeer-review


We present in this paper a new waveguide-electrode layout for electrooptical devices integrated in a Z-cut X-propagating lithium niobate crystal. Polarization independent operation is achieved in this structure by a combination of several factors: simultaneous utilization of three electrooptic coefficients (r33 r31 r22), electrode shift with respect to waveguides, and consideration of a necessary insertion of a buffer layer. Phase and amplitude modulation schemes are described based on this configuration. The layout has advantages, when compared to other polarization-insensitive schemes, in terms of lower voltage length and absence of polarization conversion.

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number1
StatePublished - Jan 2000


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