The present invention provides for polarization independence in electrooptic
waveguides. Specifically, in accordance with one embodiment of the present invention,
an electrooptic waveguide for an optical signal is provided. The waveguide comprises
a plurality of control electrodes, an optical waveguide core defining a primary
axis of propagation, and an electrooptic cladding at least partially surrounding
the core. The control electrodes are positioned to generate a contoured electric
field across the cladding. The cladding is poled along a poling contour. The contoured
electric field and/or the poling contour are asymmetric relative to a plane intersecting
the waveguide core and extending along the primary axis of propagation. The electrooptic
cladding defines at least two cladding regions on opposite sides of the waveguide
core. The contoured electric field comprises (i) a vertical electric field component
within a first one of said pair cladding regions that is larger than a vertical
component in a second one of the cladding regions and (ii) a horizontal electric
field component within the first cladding region that is smaller than a horizontal
component in the second cladding region.