National Research Council of Canada

A Delage

Jian-Jun He

Emil S Koteles

L Erickson

B Lamontagne

A device for compensating the birefringence normally associated with an integrated optical waveguide grating device has a polarization compensating slab waveguide region. This compensating region can be provided within the slab waveguide region normally present in the grating device by etching, doping, ion implanting a sub-region of a predetermined shape and dimension to change its birefringence. Alternatively, or in combination with changing the birefringence in this sub-region, electrodes can be provided for electro-optically changing the birefringence dynamically as required. This device can be applied to reflective and transmissive diffraction gratings and to phased array waveguide gratings.

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Gloucester, Canada

A Delage